34 files changed, 582 insertions, 262 deletions

diff --git a/Makefile b/Makefile
index b51de6f..ad825be 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 all::
 
-CGIT_VERSION = v1.2.2
+CGIT_VERSION = v1.2.3
 CGIT_SCRIPT_NAME = cgit.cgi
 CGIT_SCRIPT_PATH = /var/www/htdocs/cgit
 CGIT_DATA_PATH = $(CGIT_SCRIPT_PATH)
@@ -14,7 +14,7 @@ htmldir = $(docdir)
 pdfdir = $(docdir)
 mandir = $(prefix)/share/man
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 2.25.0
+GIT_VER = 2.39.0
 GIT_URL = https://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.xz
 INSTALL = install
 COPYTREE = cp -r
@@ -87,6 +87,7 @@ install: all
 	$(INSTALL) -m 0755 cgit $(DESTDIR)$(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
 	$(INSTALL) -m 0755 -d $(DESTDIR)$(CGIT_DATA_PATH)
 	$(INSTALL) -m 0644 cgit.css $(DESTDIR)$(CGIT_DATA_PATH)/cgit.css
+	$(INSTALL) -m 0644 cgit.js $(DESTDIR)$(CGIT_DATA_PATH)/cgit.js
 	$(INSTALL) -m 0644 cgit.png $(DESTDIR)$(CGIT_DATA_PATH)/cgit.png
 	$(INSTALL) -m 0644 favicon.ico $(DESTDIR)$(CGIT_DATA_PATH)/favicon.ico
 	$(INSTALL) -m 0644 robots.txt $(DESTDIR)$(CGIT_DATA_PATH)/robots.txt
diff --git a/cache.c b/cache.c
index 2c70be7..1c843ba 100644
--- a/cache.c
+++ b/cache.c
@@ -85,40 +85,45 @@ static int close_slot(struct cache_slot *slot)
 /* Print the content of the active cache slot (but skip the key). */
 static int print_slot(struct cache_slot *slot)
 {
+	off_t off;
 #ifdef HAVE_LINUX_SENDFILE
-	off_t start_off;
-	int ret;
+	off_t size;
+#endif
+
+	off = slot->keylen + 1;
 
-	start_off = slot->keylen + 1;
+#ifdef HAVE_LINUX_SENDFILE
+	size = slot->cache_st.st_size;
 
 	do {
-		ret = sendfile(STDOUT_FILENO, slot->cache_fd, &start_off,
-				slot->cache_st.st_size - start_off);
+		ssize_t ret;
+		ret = sendfile(STDOUT_FILENO, slot->cache_fd, &off, size - off);
 		if (ret < 0) {
 			if (errno == EAGAIN || errno == EINTR)
 				continue;
+			/* Fall back to read/write on EINVAL or ENOSYS */
+			if (errno == EINVAL || errno == ENOSYS)
+				break;
 			return errno;
 		}
-		return 0;
+		if (off == size)
+			return 0;
 	} while (1);
-#else
-	ssize_t i, j;
+#endif
 
-	i = lseek(slot->cache_fd, slot->keylen + 1, SEEK_SET);
-	if (i != slot->keylen + 1)
+	if (lseek(slot->cache_fd, off, SEEK_SET) != off)
 		return errno;
 
 	do {
-		i = j = xread(slot->cache_fd, slot->buf, sizeof(slot->buf));
-		if (i > 0)
-			j = xwrite(STDOUT_FILENO, slot->buf, i);
-	} while (i > 0 && j == i);
-
-	if (i < 0 || j != i)
-		return errno;
-	else
-		return 0;
-#endif
+		ssize_t ret;
+		ret = xread(slot->cache_fd, slot->buf, sizeof(slot->buf));
+		if (ret < 0)
+			return errno;
+		if (ret == 0)
+			return 0;
+		if (write_in_full(STDOUT_FILENO, slot->buf, ret) < 0)
+			return errno;
+	} while (1);
 }
 
 /* Check if the slot has expired */
@@ -401,12 +406,12 @@ int cache_process(int size, const char *path, const char *key, int ttl,
 static char *sprintftime(const char *format, time_t time)
 {
 	static char buf[64];
-	struct tm *tm;
+	struct tm tm;
 
 	if (!time)
 		return NULL;
-	tm = gmtime(&time);
-	strftime(buf, sizeof(buf)-1, format, tm);
+	gmtime_r(&time, &tm);
+	strftime(buf, sizeof(buf)-1, format, &tm);
 	return buf;
 }
 
diff --git a/cgit.c b/cgit.c
index c4320f0..57d7097 100644
--- a/cgit.c
+++ b/cgit.c
@@ -142,7 +142,9 @@ static void config_cb(const char *name, const char *value)
 	else if (!strcmp(name, "root-readme"))
 		ctx.cfg.root_readme = xstrdup(value);
 	else if (!strcmp(name, "css"))
-		ctx.cfg.css = xstrdup(value);
+		string_list_append(&ctx.cfg.css, xstrdup(value));
+	else if (!strcmp(name, "js"))
+		string_list_append(&ctx.cfg.js, xstrdup(value));
 	else if (!strcmp(name, "favicon"))
 		ctx.cfg.favicon = xstrdup(value);
 	else if (!strcmp(name, "footer"))
@@ -237,9 +239,11 @@ static void config_cb(const char *name, const char *value)
 		ctx.cfg.max_repodesc_len = atoi(value);
 	else if (!strcmp(name, "max-blob-size"))
 		ctx.cfg.max_blob_size = atoi(value);
-	else if (!strcmp(name, "max-repo-count"))
+	else if (!strcmp(name, "max-repo-count")) {
 		ctx.cfg.max_repo_count = atoi(value);
-	else if (!strcmp(name, "max-commit-count"))
+		if (ctx.cfg.max_repo_count <= 0)
+			ctx.cfg.max_repo_count = INT_MAX;
+	} else if (!strcmp(name, "max-commit-count"))
 		ctx.cfg.max_commit_count = atoi(value);
 	else if (!strcmp(name, "project-list"))
 		ctx.cfg.project_list = xstrdup(expand_macros(value));
@@ -324,11 +328,11 @@ static void querystring_cb(const char *name, const char *value)
 		ctx.qry.head = xstrdup(value);
 		ctx.qry.has_symref = 1;
 	} else if (!strcmp(name, "id")) {
-		ctx.qry.sha1 = xstrdup(value);
-		ctx.qry.has_sha1 = 1;
+		ctx.qry.oid = xstrdup(value);
+		ctx.qry.has_oid = 1;
 	} else if (!strcmp(name, "id2")) {
-		ctx.qry.sha2 = xstrdup(value);
-		ctx.qry.has_sha1 = 1;
+		ctx.qry.oid2 = xstrdup(value);
+		ctx.qry.has_oid = 1;
 	} else if (!strcmp(name, "ofs")) {
 		ctx.qry.ofs = atoi(value);
 	} else if (!strcmp(name, "path")) {
@@ -376,7 +380,6 @@ static void prepare_context(void)
 	ctx.cfg.case_sensitive_sort = 1;
 	ctx.cfg.branch_sort = 0;
 	ctx.cfg.commit_sort = 0;
-	ctx.cfg.css = "/cgit.css";
 	ctx.cfg.logo = "/cgit.png";
 	ctx.cfg.favicon = "/favicon.ico";
 	ctx.cfg.local_time = 0;
@@ -428,7 +431,7 @@ static void prepare_context(void)
 	ctx.page.modified = time(NULL);
 	ctx.page.expires = ctx.page.modified;
 	ctx.page.etag = NULL;
-	string_list_init(&ctx.cfg.mimetypes, 1);
+	string_list_init_dup(&ctx.cfg.mimetypes);
 	if (ctx.env.script_name)
 		ctx.cfg.script_name = xstrdup(ctx.env.script_name);
 	if (ctx.env.query_string)
@@ -507,9 +510,11 @@ static inline void parse_readme(const char *readme, char **filename, char **ref,
 	/* Check if the readme is tracked in the git repo. */
 	colon = strchr(readme, ':');
 	if (colon && strlen(colon) > 1) {
-		/* If it starts with a colon, we want to use
-		 * the default branch */
-		if (colon == readme && repo->defbranch)
+		/* If it starts with a colon, we want to use head given
+		 * from query or the default branch */
+		if (colon == readme && ctx.qry.head)
+			*ref = xstrdup(ctx.qry.head);
+		else if (colon == readme && repo->defbranch)
 			*ref = xstrdup(repo->defbranch);
 		else
 			*ref = xstrndup(readme, colon - readme);
@@ -992,9 +997,9 @@ static void cgit_parse_args(int argc, const char **argv)
 		} else if (skip_prefix(argv[i], "--head=", &arg)) {
 			ctx.qry.head = xstrdup(arg);
 			ctx.qry.has_symref = 1;
-		} else if (skip_prefix(argv[i], "--sha1=", &arg)) {
-			ctx.qry.sha1 = xstrdup(arg);
-			ctx.qry.has_sha1 = 1;
+		} else if (skip_prefix(argv[i], "--oid=", &arg)) {
+			ctx.qry.oid = xstrdup(arg);
+			ctx.qry.has_oid = 1;
 		} else if (skip_prefix(argv[i], "--ofs=", &arg)) {
 			ctx.qry.ofs = atoi(arg);
 		} else if (skip_prefix(argv[i], "--scan-tree=", &arg) ||
@@ -1037,7 +1042,7 @@ static int calc_ttl(void)
 	if (!strcmp(ctx.qry.page, "snapshot"))
 		return ctx.cfg.cache_snapshot_ttl;
 
-	if (ctx.qry.has_sha1)
+	if (ctx.qry.has_oid)
 		return ctx.cfg.cache_static_ttl;
 
 	if (ctx.qry.has_symref)
diff --git a/cgit.css b/cgit.css
index d4aadbf..1b848cf 100644
--- a/cgit.css
+++ b/cgit.css
@@ -363,6 +363,10 @@ div#cgit table.blame td.lines > div > pre {
 	top: 0;
 }
 
+div#cgit table.blame .oid {
+	font-size: 100%;
+}
+
 div#cgit table.bin-blob {
 	margin-top: 0.5em;
 	border: solid 1px black;
@@ -561,7 +565,7 @@ div#cgit table.diff td div.del {
 	color: red;
 }
 
-div#cgit .sha1 {
+div#cgit .oid {
 	font-family: monospace;
 	font-size: 90%;
 }
diff --git a/cgit.h b/cgit.h
index 7ec46b4..ddd2ccb 100644
--- a/cgit.h
+++ b/cgit.h
@@ -14,7 +14,7 @@
 #include <tag.h>
 #include <diff.h>
 #include <diffcore.h>
-#include <argv-array.h>
+#include <strvec.h>
 #include <refs.h>
 #include <revision.h>
 #include <log-tree.h>
@@ -25,6 +25,7 @@
 #include <utf8.h>
 #include <notes.h>
 #include <graph.h>
+#include <inttypes.h>
 
 /* Add isgraph(x) to Git's sane ctype support (see git-compat-util.h) */
 #undef isgraph
@@ -164,7 +165,7 @@ struct reflist {
 
 struct cgit_query {
 	int has_symref;
-	int has_sha1;
+	int has_oid;
 	int has_difftype;
 	char *raw;
 	char *repo;
@@ -172,8 +173,8 @@ struct cgit_query {
 	char *search;
 	char *grep;
 	char *head;
-	char *sha1;
-	char *sha2;
+	char *oid;
+	char *oid2;
 	char *path;
 	char *name;
 	char *url;
@@ -195,7 +196,6 @@ struct cgit_config {
 	char *cache_root;
 	char *clone_prefix;
 	char *clone_url;
-	char *css;
 	char *favicon;
 	char *footer;
 	char *head_include;
@@ -206,6 +206,7 @@ struct cgit_config {
 	char *module_link;
 	char *project_list;
 	struct string_list readme;
+	struct string_list css;
 	char *robots;
 	char *root_title;
 	char *root_desc;
@@ -264,6 +265,7 @@ struct cgit_config {
 	int branch_sort;
 	int commit_sort;
 	struct string_list mimetypes;
+	struct string_list js;
 	struct cgit_filter *about_filter;
 	struct cgit_filter *commit_filter;
 	struct cgit_filter *source_filter;
diff --git a/cgit.js b/cgit.js
new file mode 100644
index 0000000..df3ad4e
--- /dev/null
+++ b/cgit.js
@@ -0,0 +1,68 @@
+/* cgit.js: javacript functions for cgit
+ *
+ * Copyright (C) 2006-2018 cgit Development Team <cgit@lists.zx2c4.com>
+ *
+ * Licensed under GNU General Public License v2
+ *   (see COPYING for full license text)
+ */
+
+(function () {
+
+/* This follows the logic and suffixes used in ui-shared.c */
+
+var age_classes = [ "age-mins", "age-hours", "age-days",    "age-weeks",    "age-months",    "age-years" ];
+var age_suffix =  [ "min.",     "hours",     "days",        "weeks",        "months",        "years",         "years" ];
+var age_next =    [ 60,         3600,        24 * 3600,     7 * 24 * 3600,  30 * 24 * 3600,  365 * 24 * 3600, 365 * 24 * 3600 ];
+var age_limit =   [ 7200,       24 * 7200,   7 * 24 * 7200, 30 * 24 * 7200, 365 * 25 * 7200, 365 * 25 * 7200 ];
+var update_next = [ 10,         5 * 60,      1800,          24 * 3600,      24 * 3600,       24 * 3600,       24 * 3600 ];
+
+function render_age(e, age) {
+	var t, n;
+
+	for (n = 0; n < age_classes.length; n++)
+		if (age < age_limit[n])
+			break;
+
+	t = Math.round(age / age_next[n]) + " " + age_suffix[n];
+
+	if (e.textContent != t) {
+		e.textContent = t;
+		if (n == age_classes.length)
+			n--;
+		if (e.className != age_classes[n])
+			e.className = age_classes[n];
+	}
+}
+
+function aging() {
+	var n, next = 24 * 3600,
+	    now_ut = Math.round((new Date().getTime() / 1000));
+
+	for (n = 0; n < age_classes.length; n++) {
+		var m, elems = document.getElementsByClassName(age_classes[n]);
+
+		if (elems.length && update_next[n] < next)
+			next = update_next[n];
+
+		for (m = 0; m < elems.length; m++) {
+			var age = now_ut - elems[m].getAttribute("data-ut");
+
+			render_age(elems[m], age);
+		}
+	}
+
+	/*
+	 * We only need to come back when the age might have changed.
+	 * Eg, if everything is counted in hours already, once per
+	 * 5 minutes is accurate enough.
+	 */
+
+	window.setTimeout(aging, next * 1000);
+}
+
+document.addEventListener("DOMContentLoaded", function() {
+	/* we can do the aging on DOM content load since no layout dependency */
+	aging();
+}, false);
+
+})();
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index ba77826..6f3e952 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -126,7 +126,8 @@ commit-sort::
 
 css::
 	Url which specifies the css document to include in all cgit pages.
-	Default value: "/cgit.css".
+	Default value: "/cgit.css".  May be given multiple times, each
+	css URL path is added in the head section of the document in turn.
 
 email-filter::
 	Specifies a command which will be invoked to format names and email
@@ -238,6 +239,11 @@ include::
 	Name of a configfile to include before the rest of the current config-
 	file is parsed. Default value: none. See also: "MACRO EXPANSION".
 
+js::
+	Url which specifies the javascript script document to include in all cgit
+	pages.  Default value: "/cgit.js".  Setting this to an empty string will
+	disable generation of the link to this file in the head section.
+
 local-time::
 	Flag which, if set to "1", makes cgit print commit and tag times in the
 	servers timezone. Default value: "0".
@@ -269,7 +275,8 @@ max-message-length::
 
 max-repo-count::
 	Specifies the number of entries to list per page on the	repository
-	index page. Default value: "50".
+	index page. The value "0" shows all repositories without limitation.
+	Default value: "50".
 
 max-repodesc-length::
 	Specifies the maximum number of repo description characters to display
@@ -407,9 +414,12 @@ side-by-side-diffs::
 snapshots::
 	Text which specifies the default set of snapshot formats that cgit
 	generates links for. The value is a space-separated list of zero or
-	more of the values "tar", "tar.gz", "tar.bz2", "tar.xz" and "zip".
-	The special value "all" enables all snapshot formats.
-	Default value: none.
+	more of the values "tar", "tar.gz", "tar.bz2", "tar.lz", "tar.xz",
+	"tar.zst" and "zip". The special value "all" enables all snapshot
+	formats. Default value: none.
+	All compressors use default settings. Some settings can be influenced
+	with environment variables, for example set ZSTD_CLEVEL=10 in web
+	server environment for higher (but slower) zstd compression.
 
 source-filter::
 	Specifies a command which will be invoked to format plaintext blobs
@@ -576,11 +586,11 @@ repo.readme::
 	verbatim as the "About" page for this repo. You may also specify a
 	git refspec by head or by hash by prepending the refspec followed by
 	a colon. For example, "master:docs/readme.mkd". If the value begins
-	with a colon, i.e. ":docs/readme.rst", the default branch of the
-	repository will be used. Sharing any file will expose that entire
-	directory tree to the "/about/PATH" endpoints, so be sure that there
-	are no non-public files located in the same directory as the readme
-	file. Default value: <readme>.
+	with a colon, i.e. ":docs/readme.rst", the head giving in query or
+	the default branch of the repository will be used. Sharing any file
+	will expose that entire directory tree to the "/about/PATH" endpoints,
+	so be sure that there are no non-public files located in the same
+	directory as the readme file. Default value: <readme>.
 
 repo.section::
 	Override the current section name for this repository. Default value:
diff --git a/cmd.c b/cmd.c
index bf6d8f5..0eb75b1 100644
--- a/cmd.c
+++ b/cmd.c
@@ -74,22 +74,22 @@ static void blame_fn(void)
 
 static void blob_fn(void)
 {
-	cgit_print_blob(ctx.qry.sha1, ctx.qry.path, ctx.qry.head, 0);
+	cgit_print_blob(ctx.qry.oid, ctx.qry.path, ctx.qry.head, 0);
 }
 
 static void commit_fn(void)
 {
-	cgit_print_commit(ctx.qry.sha1, ctx.qry.path);
+	cgit_print_commit(ctx.qry.oid, ctx.qry.path);
 }
 
 static void diff_fn(void)
 {
-	cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path, 1, 0);
+	cgit_print_diff(ctx.qry.oid, ctx.qry.oid2, ctx.qry.path, 1, 0);
 }
 
 static void rawdiff_fn(void)
 {
-	cgit_print_diff(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path, 1, 1);
+	cgit_print_diff(ctx.qry.oid, ctx.qry.oid2, ctx.qry.path, 1, 1);
 }
 
 static void info_fn(void)
@@ -99,7 +99,7 @@ static void info_fn(void)
 
 static void log_fn(void)
 {
-	cgit_print_log(ctx.qry.sha1, ctx.qry.ofs, ctx.cfg.max_commit_count,
+	cgit_print_log(ctx.qry.oid, ctx.qry.ofs, ctx.cfg.max_commit_count,
 		       ctx.qry.grep, ctx.qry.search, ctx.qry.path, 1,
 		       ctx.repo->enable_commit_graph,
 		       ctx.repo->commit_sort);
@@ -125,7 +125,7 @@ static void repolist_fn(void)
 
 static void patch_fn(void)
 {
-	cgit_print_patch(ctx.qry.sha1, ctx.qry.sha2, ctx.qry.path);
+	cgit_print_patch(ctx.qry.oid, ctx.qry.oid2, ctx.qry.path);
 }
 
 static void plain_fn(void)
@@ -140,7 +140,7 @@ static void refs_fn(void)
 
 static void snapshot_fn(void)
 {
-	cgit_print_snapshot(ctx.qry.head, ctx.qry.sha1, ctx.qry.path,
+	cgit_print_snapshot(ctx.qry.head, ctx.qry.oid, ctx.qry.path,
 			    ctx.qry.nohead);
 }
 
@@ -156,12 +156,12 @@ static void summary_fn(void)
 
 static void tag_fn(void)
 {
-	cgit_print_tag(ctx.qry.sha1);
+	cgit_print_tag(ctx.qry.oid);
 }
 
 static void tree_fn(void)
 {
-	cgit_print_tree(ctx.qry.sha1, ctx.qry.path);
+	cgit_print_tree(ctx.qry.oid, ctx.qry.path);
 }
 
 #define def_cmd(name, want_repo, want_vpath, is_clone) \
diff --git a/filters/commit-links.sh b/filters/commit-links.sh
index 5881952..796ac30 100755
--- a/filters/commit-links.sh
+++ b/filters/commit-links.sh
@@ -19,7 +19,7 @@ regex=''
 
 # This expression generates links to commits referenced by their SHA1.
 regex=$regex'
-s|\b([0-9a-fA-F]{7,40})\b|<a href="./?id=\1">\1</a>|g'
+s|\b([0-9a-fA-F]{7,64})\b|<a href="./?id=\1">\1</a>|g'
 
 # This expression generates links to a fictional bugtracker.
 regex=$regex'
diff --git a/filters/html-converters/md2html b/filters/html-converters/md2html
index dc20f42..59f43a8 100755
--- a/filters/html-converters/md2html
+++ b/filters/html-converters/md2html
@@ -86,11 +86,7 @@ div#cgit .markdown-body h1 a.toclink, div#cgit .markdown-body h2 a.toclink, div#
     margin: 15px 0;
 }
 .markdown-body hr {
-    background: transparent url("/dirty-shade.png") repeat-x 0 0;
-    border: 0 none;
-    color: #ccc;
-    height: 4px;
-    padding: 0;
+    border: 2px solid #ccc;
 }
 .markdown-body>h2:first-child, .markdown-body>h1:first-child, .markdown-body>h1:first-child+h2, .markdown-body>h3:first-child, .markdown-body>h4:first-child, .markdown-body>h5:first-child, .markdown-body>h6:first-child {
     margin-top: 0;
@@ -301,6 +297,7 @@ markdown.markdownFromFile(
 		"markdown.extensions.fenced_code",
 		"markdown.extensions.codehilite",
 		"markdown.extensions.tables",
+		"markdown.extensions.sane_lists",
 		TocExtension(anchorlink=True)],
 	extension_configs={
 		"markdown.extensions.codehilite":{"css_class":"highlight"}})
diff --git a/git b/git
-Subproject d0654dc308b0ba76dd8ed7bbb33c8d8f7aacd78
+Subproject c48035d29b4e524aed3a32f0403676f0d912886
diff --git a/html.c b/html.c
index 7f81965..0bac34b 100644
--- a/html.c
+++ b/html.c
@@ -59,7 +59,7 @@ char *fmt(const char *format, ...)
 	va_start(args, format);
 	len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
 	va_end(args);
-	if (len > sizeof(buf[bufidx])) {
+	if (len >= sizeof(buf[bufidx])) {
 		fprintf(stderr, "[html.c] string truncated: %s\n", format);
 		exit(1);
 	}
diff --git a/parsing.c b/parsing.c
index 93b4767..72b59b3 100644
--- a/parsing.c
+++ b/parsing.c
@@ -127,7 +127,6 @@ static int end_of_header(const char *p)
 
 struct commitinfo *cgit_parse_commit(struct commit *commit)
 {
-	const int sha1hex_len = 40;
 	struct commitinfo *ret;
 	const char *p = repo_get_commit_buffer(the_repository, commit, NULL);
 	const char *t;
@@ -140,10 +139,10 @@ struct commitinfo *cgit_parse_commit(struct commit *commit)
 
 	if (!skip_prefix(p, "tree ", &p))
 		die("Bad commit: %s", oid_to_hex(&commit->object.oid));
-	p += sha1hex_len + 1;
+	p += the_hash_algo->hexsz + 1;
 
 	while (skip_prefix(p, "parent ", &p))
-		p += sha1hex_len + 1;
+		p += the_hash_algo->hexsz + 1;
 
 	if (p && skip_prefix(p, "author ", &p)) {
 		parse_user(p, &ret->author, &ret->author_email,
diff --git a/robots.txt b/robots.txt
index 4ce948f..1b33266 100644
--- a/robots.txt
+++ b/robots.txt
@@ -1,3 +1,4 @@
 User-agent: *
 Disallow: /*/snapshot/*
+Disallow: /*/blame/*
 Allow: /
diff --git a/shared.c b/shared.c
index 8115469..0bceb98 100644
--- a/shared.c
+++ b/shared.c
@@ -341,9 +341,8 @@ void cgit_diff_tree(const struct object_id *old_oid,
 		    filepair_fn fn, const char *prefix, int ignorews)
 {
 	struct diff_options opt;
-	struct pathspec_item item;
+	struct pathspec_item *item;
 
-	memset(&item, 0, sizeof(item));
 	diff_setup(&opt);
 	opt.output_format = DIFF_FORMAT_CALLBACK;
 	opt.detect_rename = 1;
@@ -354,10 +353,11 @@ void cgit_diff_tree(const struct object_id *old_oid,
 	opt.format_callback = cgit_diff_tree_cb;
 	opt.format_callback_data = fn;
 	if (prefix) {
-		item.match = xstrdup(prefix);
-		item.len = strlen(prefix);
+		item = xcalloc(1, sizeof(*item));
+		item->match = xstrdup(prefix);
+		item->len = strlen(prefix);
 		opt.pathspec.nr = 1;
-		opt.pathspec.items = &item;
+		opt.pathspec.items = item;
 	}
 	diff_setup_done(&opt);
 
@@ -367,8 +367,6 @@ void cgit_diff_tree(const struct object_id *old_oid,
 		diff_root_tree_oid(new_oid, "", &opt);
 	diffcore_std(&opt);
 	diff_flush(&opt);
-
-	free(item.match);
 }
 
 void cgit_diff_commit(struct commit *commit, filepair_fn fn, const char *prefix)
diff --git a/tests/setup.sh b/tests/setup.sh
index 7590f04..8db810f 100755
--- a/tests/setup.sh
+++ b/tests/setup.sh
@@ -80,13 +80,17 @@ mkrepo() {
 			git commit -m "commit $n"
 			n=$(expr $n + 1)
 		done
-		if test "$3" = "testplus"
-		then
+		case "$3" in
+		testplus)
 			echo "hello" >a+b
 			git add a+b
 			git commit -m "add a+b"
 			git branch "1+2"
-		fi
+			;;
+		commit-graph)
+			git commit-graph write
+			;;
+		esac
 	)
 }
 
@@ -95,7 +99,7 @@ setup_repos()
 	rm -rf cache
 	mkdir -p cache
 	mkrepo repos/foo 5 >/dev/null
-	mkrepo repos/bar 50 >/dev/null
+	mkrepo repos/bar 50 commit-graph >/dev/null
 	mkrepo repos/foo+bar 10 testplus >/dev/null
 	mkrepo "repos/with space" 2 >/dev/null
 	mkrepo repos/filter 5 testplus >/dev/null
@@ -104,7 +108,7 @@ virtual-root=/
 cache-root=$PWD/cache
 
 cache-size=1021
-snapshots=tar.gz tar.bz zip
+snapshots=tar.gz tar.bz tar.lz tar.xz tar.zst zip
 enable-log-filecount=1
 enable-log-linecount=1
 summary-log=5
diff --git a/tests/t0001-validate-git-versions.sh b/tests/t0001-validate-git-versions.sh
index 3200f31..dd84fe3 100755
--- a/tests/t0001-validate-git-versions.sh
+++ b/tests/t0001-validate-git-versions.sh
@@ -1,5 +1,9 @@
 #!/bin/sh
 
+if [ "${CGIT_TEST_NO_GIT_VERSION}" = "YesPlease" ]; then
+	exit 0
+fi
+
 test_description='Check Git version is correct'
 CGIT_TEST_NO_CREATE_REPOS=YesPlease
 . ./setup.sh
@@ -29,10 +33,10 @@ test_expect_success 'test submodule version matches Makefile' '
 	else
 		(
 			cd ../.. &&
-			sm_sha1=$(git ls-files --stage -- git |
+			sm_oid=$(git ls-files --stage -- git |
 				sed -e "s/^[0-9]* \\([0-9a-f]*\\) [0-9]	.*$/\\1/") &&
 			cd git &&
-			git describe --match "v[0-9]*" $sm_sha1
+			git describe --match "v[0-9]*" $sm_oid
 		) | sed -e "s/^v//" -e "s/-/./" >sm_version &&
 		test_cmp sm_version makefile_version
 	fi
diff --git a/tests/t0105-commit.sh b/tests/t0105-commit.sh
index 9cdf55c..1a12ee3 100755
--- a/tests/t0105-commit.sh
+++ b/tests/t0105-commit.sh
@@ -25,7 +25,7 @@ test_expect_success 'get root commit' '
 '
 
 test_expect_success 'root commit contains diffstat' '
-	grep "<a href=./foo/diff/file-1.id=[0-9a-f]\{40\}.>file-1</a>" tmp
+	grep "<a href=./foo/diff/file-1.id=[0-9a-f]\{40,64\}.>file-1</a>" tmp
 '
 
 test_expect_success 'root commit contains diff' '
diff --git a/tests/t0107-snapshot.sh b/tests/t0107-snapshot.sh
index 6cf7aaa..0811ec4 100755
--- a/tests/t0107-snapshot.sh
+++ b/tests/t0107-snapshot.sh
@@ -25,7 +25,7 @@ test_expect_success 'verify gzip format' '
 
 test_expect_success 'untar' '
 	rm -rf master &&
-	tar -xzf master.tar.gz
+	gzip -dc master.tar.gz | tar -xf -
 '
 
 test_expect_success 'count files' '
@@ -38,6 +38,129 @@ test_expect_success 'verify untarred file-5' '
 	test_line_count = 1 master/file-5
 '
 
+if test -n "$(which lzip 2>/dev/null)"; then
+	test_set_prereq LZIP
+else
+	say 'Skipping LZIP validation tests: lzip not found'
+fi
+
+test_expect_success LZIP 'get foo/snapshot/master.tar.lz' '
+	cgit_url "foo/snapshot/master.tar.lz" >tmp
+'
+
+test_expect_success LZIP 'check html headers' '
+	head -n 1 tmp |
+	grep "Content-Type: application/x-lzip" &&
+
+	head -n 2 tmp |
+	grep "Content-Disposition: inline; filename=.master.tar.lz."
+'
+
+test_expect_success LZIP 'strip off the header lines' '
+	strip_headers <tmp >master.tar.lz
+'
+
+test_expect_success LZIP 'verify lzip format' '
+	lzip --test master.tar.lz
+'
+
+test_expect_success LZIP 'untar' '
+	rm -rf master &&
+	lzip -dc master.tar.lz | tar -xf -
+'
+
+test_expect_success LZIP 'count files' '
+	ls master/ >output &&
+	test_line_count = 5 output
+'
+
+test_expect_success LZIP 'verify untarred file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
+'
+
+if test -n "$(which xz 2>/dev/null)"; then
+	test_set_prereq XZ
+else
+	say 'Skipping XZ validation tests: xz not found'
+fi
+
+test_expect_success XZ 'get foo/snapshot/master.tar.xz' '
+	cgit_url "foo/snapshot/master.tar.xz" >tmp
+'
+
+test_expect_success XZ 'check html headers' '
+	head -n 1 tmp |
+	grep "Content-Type: application/x-xz" &&
+
+	head -n 2 tmp |
+	grep "Content-Disposition: inline; filename=.master.tar.xz."
+'
+
+test_expect_success XZ 'strip off the header lines' '
+	strip_headers <tmp >master.tar.xz
+'
+
+test_expect_success XZ 'verify xz format' '
+	xz --test master.tar.xz
+'
+
+test_expect_success XZ 'untar' '
+	rm -rf master &&
+	xz -dc master.tar.xz | tar -xf -
+'
+
+test_expect_success XZ 'count files' '
+	ls master/ >output &&
+	test_line_count = 5 output
+'
+
+test_expect_success XZ 'verify untarred file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
+'
+
+if test -n "$(which zstd 2>/dev/null)"; then
+	test_set_prereq ZSTD
+else
+	say 'Skipping ZSTD validation tests: zstd not found'
+fi
+
+test_expect_success ZSTD 'get foo/snapshot/master.tar.zst' '
+	cgit_url "foo/snapshot/master.tar.zst" >tmp
+'
+
+test_expect_success ZSTD 'check html headers' '
+	head -n 1 tmp |
+	grep "Content-Type: application/x-zstd" &&
+
+	head -n 2 tmp |
+	grep "Content-Disposition: inline; filename=.master.tar.zst."
+'
+
+test_expect_success ZSTD 'strip off the header lines' '
+	strip_headers <tmp >master.tar.zst
+'
+
+test_expect_success ZSTD 'verify zstd format' '
+	zstd --test master.tar.zst
+'
+
+test_expect_success ZSTD 'untar' '
+	rm -rf master &&
+	zstd -dc master.tar.zst | tar -xf -
+'
+
+test_expect_success ZSTD 'count files' '
+	ls master/ >output &&
+	test_line_count = 5 output
+'
+
+test_expect_success ZSTD 'verify untarred file-5' '
+	grep "^5$" master/file-5 &&
+	test_line_count = 1 master/file-5
+'
+
 test_expect_success 'get foo/snapshot/master.zip' '
 	cgit_url "foo/snapshot/master.zip" >tmp
 '
diff --git a/tests/t0109-gitconfig.sh b/tests/t0109-gitconfig.sh
index 8cee75c..189ef28 100755
--- a/tests/t0109-gitconfig.sh
+++ b/tests/t0109-gitconfig.sh
@@ -25,7 +25,7 @@ test_no_home_access () {
 		-E CGIT_CONFIG="$PWD/cgitrc" \
 		-E QUERY_STRING="url=$1" \
 		-e access -f -o strace.out cgit &&
-	test_must_fail grep "$non_existent_path" strace.out
+	! grep "$non_existent_path" strace.out
 }
 
 test_no_home_access_success() {
diff --git a/ui-atom.c b/ui-atom.c
index 1056f36..5f4ad7d 100644
--- a/ui-atom.c
+++ b/ui-atom.c
@@ -67,17 +67,12 @@ static void add_entry(struct commit *commit, const char *host)
 		html("'/>\n");
 		free(pageurl);
 	}
-	htmlf("<id>%s</id>\n", hex);
+	html("<id>");
+	html_txtf("urn:%s:%s", the_hash_algo->name, hex);
+	html("</id>\n");
 	html("<content type='text'>\n");
 	html_txt(info->msg);
 	html("</content>\n");
-	html("<content type='xhtml'>\n");
-	html("<div xmlns='http://www.w3.org/1999/xhtml'>\n");
-	html("<pre>\n");
-	html_txt(info->msg);
-	html("</pre>\n");
-	html("</div>\n");
-	html("</content>\n");
 	html("</entry>\n");
 	cgit_free_commitinfo(info);
 }
@@ -90,6 +85,7 @@ void cgit_print_atom(char *tip, const char *path, int max_count)
 	struct commit *commit;
 	struct rev_info rev;
 	int argc = 2;
+	bool first = true;
 
 	if (ctx.qry.show_all)
 		argv[1] = "--all";
@@ -130,18 +126,30 @@ void cgit_print_atom(char *tip, const char *path, int max_count)
 	html_txt(ctx.repo->desc);
 	html("</subtitle>\n");
 	if (host) {
+		char *fullurl = cgit_currentfullurl();
 		char *repourl = cgit_repourl(ctx.repo->url);
+		html("<id>");
+		html_txtf("%s%s%s", cgit_httpscheme(), host, fullurl);
+		html("</id>\n");
+		html("<link rel='self' href='");
+		html_attrf("%s%s%s", cgit_httpscheme(), host, fullurl);
+		html("'/>\n");
 		html("<link rel='alternate' type='text/html' href='");
-		html(cgit_httpscheme());
-		html_attr(host);
-		html_attr(repourl);
+		html_attrf("%s%s%s", cgit_httpscheme(), host, repourl);
 		html("'/>\n");
+		free(fullurl);
 		free(repourl);
 	}
 	while ((commit = get_revision(&rev)) != NULL) {
+		if (first) {
+			html("<updated>");
+			html_txt(show_date(commit->date, 0,
+				date_mode_from_type(DATE_ISO8601_STRICT)));
+			html("</updated>\n");
+			first = false;
+		}
 		add_entry(commit, host);
-		free_commit_buffer(the_repository->parsed_objects, commit);
-		free_commit_list(commit->parents);
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}
 	html("</feed>\n");
diff --git a/ui-blame.c b/ui-blame.c
index 644c30a..aedce8d 100644
--- a/ui-blame.c
+++ b/ui-blame.c
@@ -10,7 +10,7 @@
 #include "ui-blame.h"
 #include "html.h"
 #include "ui-shared.h"
-#include "argv-array.h"
+#include "strvec.h"
 #include "blame.h"
 
 
@@ -48,12 +48,21 @@ static void emit_blame_entry_hash(struct blame_entry *ent)
 	unsigned long line = 0;
 
 	char *detail = emit_suspect_detail(suspect);
-	html("<span class='sha1'>");
+	html("<span class='oid'>");
 	cgit_commit_link(find_unique_abbrev(oid, DEFAULT_ABBREV), detail,
 			 NULL, ctx.qry.head, oid_to_hex(oid), suspect->path);
 	html("</span>");
 	free(detail);
 
+	if (!parse_commit(suspect->commit) && suspect->commit->parents) {
+		struct commit *parent = suspect->commit->parents->item;
+
+		html(" ");
+		cgit_blame_link("^", "Blame the previous revision", NULL,
+				ctx.qry.head, oid_to_hex(&parent->object.oid),
+				suspect->path);
+	}
+
 	while (line++ < ent->num_lines)
 		html("\n");
 }
@@ -104,7 +113,7 @@ static void print_object(const struct object_id *oid, const char *path,
 	enum object_type type;
 	char *buf;
 	unsigned long size;
-	struct argv_array rev_argv = ARGV_ARRAY_INIT;
+	struct strvec rev_argv = STRVEC_INIT;
 	struct rev_info revs;
 	struct blame_scoreboard sb;
 	struct blame_origin *o;
@@ -124,15 +133,16 @@ static void print_object(const struct object_id *oid, const char *path,
 		return;
 	}
 
-	argv_array_push(&rev_argv, "blame");
-	argv_array_push(&rev_argv, rev);
+	strvec_push(&rev_argv, "blame");
+	strvec_push(&rev_argv, rev);
 	init_revisions(&revs, NULL);
 	revs.diffopt.flags.allow_textconv = 1;
-	setup_revisions(rev_argv.argc, rev_argv.argv, &revs, NULL);
+	setup_revisions(rev_argv.nr, rev_argv.v, &revs, NULL);
 	init_scoreboard(&sb);
 	sb.revs = &revs;
 	sb.repo = the_repository;
-	setup_scoreboard(&sb, path, &o);
+	sb.path = path;
+	setup_scoreboard(&sb, &o);
 	o->suspects = blame_entry_prepend(NULL, 0, sb.num_lines, o);
 	prio_queue_put(&sb.commits, o->commit);
 	blame_origin_decref(o);
@@ -151,6 +161,10 @@ static void print_object(const struct object_id *oid, const char *path,
 	cgit_tree_link("tree", NULL, NULL, ctx.qry.head, rev, path);
 	html(")\n");
 
+	if (buffer_is_binary(buf, size)) {
+		html("<div class='error'>blob is binary.</div>");
+		goto cleanup;
+	}
 	if (ctx.cfg.max_blob_size && size / 1024 > ctx.cfg.max_blob_size) {
 		htmlf("<div class='error'>blob size (%ldKB)"
 		      " exceeds display size limit (%dKB).</div>",
@@ -220,8 +234,7 @@ cleanup:
 }
 
 static int walk_tree(const struct object_id *oid, struct strbuf *base,
-		     const char *pathname, unsigned mode, int stage,
-		     void *cbdata)
+		     const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;
 
@@ -256,7 +269,7 @@ static int basedir_len(const char *path)
 
 void cgit_print_blame(void)
 {
-	const char *rev = ctx.qry.sha1;
+	const char *rev = ctx.qry.oid;
 	struct object_id oid;
 	struct commit *commit;
 	struct pathspec_item path_items = {
@@ -290,8 +303,8 @@ void cgit_print_blame(void)
 	walk_tree_ctx.match_baselen = (path_items.match) ?
 				       basedir_len(path_items.match) : -1;
 
-	read_tree_recursive(the_repository, commit->maybe_tree, "", 0, 0,
-		&paths, walk_tree, &walk_tree_ctx);
+	read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+		  &paths, walk_tree, &walk_tree_ctx);
 	if (!walk_tree_ctx.state)
 		cgit_print_error_page(404, "Not found", "Not found");
 	else if (walk_tree_ctx.state == 2)
diff --git a/ui-blob.c b/ui-blob.c
index 30e2d4b..c10ae42 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -19,7 +19,7 @@ struct walk_tree_context {
 };
 
 static int walk_tree(const struct object_id *oid, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;
 
@@ -56,8 +56,9 @@ int cgit_ref_path_exists(const char *path, const char *ref, int file_only)
 		goto done;
 	if (oid_object_info(the_repository, &oid, &size) != OBJ_COMMIT)
 		goto done;
-	read_tree_recursive(the_repository, lookup_commit_reference(the_repository, &oid)->maybe_tree,
-		"", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	read_tree(the_repository,
+		  repo_get_commit_tree(the_repository, lookup_commit_reference(the_repository, &oid)),
+		  &paths, walk_tree, &walk_tree_ctx);
 
 done:
 	free(path_items.match);
@@ -91,8 +92,8 @@ int cgit_print_file(char *path, const char *head, int file_only)
 	type = oid_object_info(the_repository, &oid, &size);
 	if (type == OBJ_COMMIT) {
 		commit = lookup_commit_reference(the_repository, &oid);
-		read_tree_recursive(the_repository, commit->maybe_tree,
-			"", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+		read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+			  &paths, walk_tree, &walk_tree_ctx);
 		if (!walk_tree_ctx.found_path)
 			return -1;
 		type = oid_object_info(the_repository, &oid, &size);
@@ -148,8 +149,8 @@ void cgit_print_blob(const char *hex, char *path, const char *head, int file_onl
 
 	if ((!hex) && type == OBJ_COMMIT && path) {
 		commit = lookup_commit_reference(the_repository, &oid);
-		read_tree_recursive(the_repository, commit->maybe_tree,
-			"", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+		read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+			  &paths, walk_tree, &walk_tree_ctx);
 		type = oid_object_info(the_repository, &oid, &size);
 	}
 
diff --git a/ui-commit.c b/ui-commit.c
index 9a47b54..0787237 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -39,10 +39,11 @@ void cgit_print_commit(char *hex, const char *prefix)
 	}
 	info = cgit_parse_commit(commit);
 
-	format_display_notes(&oid, &notes, PAGE_ENCODING, 0);
+	format_display_notes(&oid, &notes, PAGE_ENCODING, 1);
 
 	load_ref_decorations(NULL, DECORATE_FULL_REFS);
 
+	ctx.page.title = fmtalloc("%s - %s", info->subject, ctx.page.title);
 	cgit_print_layout_start();
 	cgit_print_diff_ctrls();
 	html("<table summary='commit info' class='commit-info'>\n");
@@ -70,15 +71,15 @@ void cgit_print_commit(char *hex, const char *prefix)
 	html_txt(show_date(info->committer_date, info->committer_tz,
 				cgit_date_mode(DATE_ISO8601)));
 	html("</td></tr>\n");
-	html("<tr><th>commit</th><td colspan='2' class='sha1'>");
+	html("<tr><th>commit</th><td colspan='2' class='oid'>");
 	tmp = oid_to_hex(&commit->object.oid);
 	cgit_commit_link(tmp, NULL, NULL, ctx.qry.head, tmp, prefix);
 	html(" (");
 	cgit_patch_link("patch", NULL, NULL, NULL, tmp, prefix);
 	html(")</td></tr>\n");
-	html("<tr><th>tree</th><td colspan='2' class='sha1'>");
+	html("<tr><th>tree</th><td colspan='2' class='oid'>");
 	tmp = xstrdup(hex);
-	cgit_tree_link(oid_to_hex(&commit->maybe_tree->object.oid), NULL, NULL,
+	cgit_tree_link(oid_to_hex(get_commit_tree_oid(commit)), NULL, NULL,
 		       ctx.qry.head, tmp, NULL);
 	if (prefix) {
 		html(" /");
@@ -95,7 +96,7 @@ void cgit_print_commit(char *hex, const char *prefix)
 			continue;
 		}
 		html("<tr><th>parent</th>"
-		     "<td colspan='2' class='sha1'>");
+		     "<td colspan='2' class='oid'>");
 		tmp = tmp2 = oid_to_hex(&p->item->object.oid);
 		if (ctx.repo->enable_subject_links) {
 			parent_info = cgit_parse_commit(parent);
@@ -109,7 +110,7 @@ void cgit_print_commit(char *hex, const char *prefix)
 		parents++;
 	}
 	if (ctx.repo->snapshots) {
-		html("<tr><th>download</th><td colspan='2' class='sha1'>");
+		html("<tr><th>download</th><td colspan='2' class='oid'>");
 		cgit_print_snapshot_links(ctx.repo, hex, "<br/>");
 		html("</td></tr>");
 	}
@@ -139,7 +140,7 @@ void cgit_print_commit(char *hex, const char *prefix)
 			tmp = oid_to_hex(&commit->parents->item->object.oid);
 		else
 			tmp = NULL;
-		cgit_print_diff(ctx.qry.sha1, tmp, prefix, 0, 0);
+		cgit_print_diff(ctx.qry.oid, tmp, prefix, 0, 0);
 	}
 	strbuf_release(&notes);
 	cgit_free_commitinfo(info);
diff --git a/ui-diff.c b/ui-diff.c
index c60aefd..5ed5990 100644
--- a/ui-diff.c
+++ b/ui-diff.c
@@ -97,8 +97,8 @@ static void print_fileinfo(struct fileinfo *info)
 		html("]</span>");
 	}
 	htmlf("</td><td class='%s'>", class);
-	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
-		       ctx.qry.sha2, info->new_path);
+	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, ctx.qry.oid,
+		       ctx.qry.oid2, info->new_path);
 	if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED) {
 		htmlf(" (%s from ",
 		      info->status == DIFF_STATUS_COPIED ? "copied" : "renamed");
@@ -194,8 +194,8 @@ static void cgit_print_diffstat(const struct object_id *old_oid,
 	int i;
 
 	html("<div class='diffstat-header'>");
-	cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
-		       ctx.qry.sha2, NULL);
+	cgit_diff_link("Diffstat", NULL, NULL, ctx.qry.head, ctx.qry.oid,
+		       ctx.qry.oid2, NULL);
 	if (prefix) {
 		html(" (limited to '");
 		html_txt(prefix);
@@ -413,7 +413,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 			"Bad commit: %s", oid_to_hex(new_rev_oid));
 		return;
 	}
-	new_tree_oid = &commit->maybe_tree->object.oid;
+	new_tree_oid = get_commit_tree_oid(commit);
 
 	if (old_rev) {
 		if (get_oid(old_rev, old_rev_oid)) {
@@ -434,7 +434,7 @@ void cgit_print_diff(const char *new_rev, const char *old_rev,
 				"Bad commit: %s", oid_to_hex(old_rev_oid));
 			return;
 		}
-		old_tree_oid = &commit2->maybe_tree->object.oid;
+		old_tree_oid = get_commit_tree_oid(commit2);
 	} else {
 		old_tree_oid = NULL;
 	}
diff --git a/ui-log.c b/ui-log.c
index dc5cb1e..311304a 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -10,7 +10,7 @@
 #include "ui-log.h"
 #include "html.h"
 #include "ui-shared.h"
-#include "argv-array.h"
+#include "strvec.h"
 
 static int files, add_lines, rem_lines, lines_counted;
 
@@ -65,8 +65,9 @@ void show_commit_decorations(struct commit *commit)
 		return;
 	html("<span class='decoration'>");
 	while (deco) {
-		struct object_id peeled;
+		struct object_id oid_tag, peeled;
 		int is_annotated = 0;
+
 		strlcpy(buf, prettify_refname(deco->name), sizeof(buf));
 		switch(deco->type) {
 		case DECORATION_NONE:
@@ -79,8 +80,8 @@ void show_commit_decorations(struct commit *commit)
 				ctx.qry.showmsg, 0);
 			break;
 		case DECORATION_REF_TAG:
-			if (!peel_ref(deco->name, &peeled))
-				is_annotated = !oidcmp(&commit->object.oid, &peeled);
+			if (!read_ref(deco->name, &oid_tag) && !peel_iterated_oid(&oid_tag, &peeled))
+				is_annotated = !oideq(&oid_tag, &peeled);
 			cgit_tag_link(buf, NULL, is_annotated ? "tag-annotated-deco" : "tag-deco", buf);
 			break;
 		case DECORATION_REF_REMOTE:
@@ -153,12 +154,12 @@ static int show_commit(struct commit *commit, struct rev_info *revs)
 	rem_lines = 0;
 
 	revs->diffopt.flags.recursive = 1;
-	diff_tree_oid(&parent->maybe_tree->object.oid,
-		      &commit->maybe_tree->object.oid,
+	diff_tree_oid(get_commit_tree_oid(parent),
+		      get_commit_tree_oid(commit),
 		      "", &revs->diffopt);
 	diffcore_std(&revs->diffopt);
 
-	found = !diff_queue_is_empty();
+	found = !diff_queue_is_empty(&revs->diffopt);
 	saved_fmt = revs->diffopt.output_format;
 	revs->diffopt.output_format = DIFF_FORMAT_CALLBACK;
 	revs->diffopt.format_callback = cgit_diff_tree_cb;
@@ -366,23 +367,23 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 {
 	struct rev_info rev;
 	struct commit *commit;
-	struct argv_array rev_argv = ARGV_ARRAY_INIT;
+	struct strvec rev_argv = STRVEC_INIT;
 	int i, columns = commit_graph ? 4 : 3;
 	int must_free_tip = 0;
 
 	/* rev_argv.argv[0] will be ignored by setup_revisions */
-	argv_array_push(&rev_argv, "log_rev_setup");
+	strvec_push(&rev_argv, "log_rev_setup");
 
 	if (!tip)
 		tip = ctx.qry.head;
 	tip = disambiguate_ref(tip, &must_free_tip);
-	argv_array_push(&rev_argv, tip);
+	strvec_push(&rev_argv, tip);
 
 	if (grep && pattern && *pattern) {
 		pattern = xstrdup(pattern);
 		if (!strcmp(grep, "grep") || !strcmp(grep, "author") ||
 		    !strcmp(grep, "committer")) {
-			argv_array_pushf(&rev_argv, "--%s=%s", grep, pattern);
+			strvec_pushf(&rev_argv, "--%s=%s", grep, pattern);
 		} else if (!strcmp(grep, "range")) {
 			char *arg;
 			/* Split the pattern at whitespace and add each token
@@ -390,14 +391,14 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 			 * rev-list options. Also, replace the previously
 			 * pushed tip (it's no longer relevant).
 			 */
-			argv_array_pop(&rev_argv);
+			strvec_pop(&rev_argv);
 			while ((arg = next_token(&pattern))) {
 				if (*arg == '-') {
 					fprintf(stderr, "Bad range expr: %s\n",
 						arg);
 					break;
 				}
-				argv_array_push(&rev_argv, arg);
+				strvec_push(&rev_argv, arg);
 			}
 		}
 	}
@@ -412,22 +413,22 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 	}
 
 	if (commit_graph && !ctx.qry.follow) {
-		argv_array_push(&rev_argv, "--graph");
-		argv_array_push(&rev_argv, "--color");
+		strvec_push(&rev_argv, "--graph");
+		strvec_push(&rev_argv, "--color");
 		graph_set_column_colors(column_colors_html,
 					COLUMN_COLORS_HTML_MAX);
 	}
 
 	if (commit_sort == 1)
-		argv_array_push(&rev_argv, "--date-order");
+		strvec_push(&rev_argv, "--date-order");
 	else if (commit_sort == 2)
-		argv_array_push(&rev_argv, "--topo-order");
+		strvec_push(&rev_argv, "--topo-order");
 
 	if (path && ctx.qry.follow)
-		argv_array_push(&rev_argv, "--follow");
-	argv_array_push(&rev_argv, "--");
+		strvec_push(&rev_argv, "--follow");
+	strvec_push(&rev_argv, "--");
 	if (path)
-		argv_array_push(&rev_argv, path);
+		strvec_push(&rev_argv, path);
 
 	init_revisions(&rev, NULL);
 	rev.abbrev = DEFAULT_ABBREV;
@@ -436,7 +437,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 	rev.show_root_diff = 0;
 	rev.ignore_missing = 1;
 	rev.simplify_history = 1;
-	setup_revisions(rev_argv.argc, rev_argv.argv, &rev, NULL);
+	setup_revisions(rev_argv.nr, rev_argv.v, &rev, NULL);
 	load_ref_decorations(NULL, DECORATE_FULL_REFS);
 	rev.show_decorations = 1;
 	rev.grep_filter.ignore_case = 1;
@@ -463,7 +464,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 	if (pager) {
 		html(" (");
 		cgit_log_link(ctx.qry.showmsg ? "Collapse" : "Expand", NULL,
-			      NULL, ctx.qry.head, ctx.qry.sha1,
+			      NULL, ctx.qry.head, ctx.qry.oid,
 			      ctx.qry.vpath, ctx.qry.ofs, ctx.qry.grep,
 			      ctx.qry.search, ctx.qry.showmsg ? 0 : 1,
 			      ctx.qry.follow);
@@ -488,8 +489,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 	for (i = 0; i < ofs && (commit = get_revision(&rev)) != NULL; /* nop */) {
 		if (show_commit(commit, &rev))
 			i++;
-		free_commit_buffer(the_repository->parsed_objects, commit);
-		free_commit_list(commit->parents);
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}
 
@@ -510,8 +510,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 			i++;
 			print_commit(commit, &rev);
 		}
-		free_commit_buffer(the_repository->parsed_objects, commit);
-		free_commit_list(commit->parents);
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}
 	if (pager) {
@@ -519,7 +518,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 		if (ofs > 0) {
 			html("<li>");
 			cgit_log_link("[prev]", NULL, NULL, ctx.qry.head,
-				      ctx.qry.sha1, ctx.qry.vpath,
+				      ctx.qry.oid, ctx.qry.vpath,
 				      ofs - cnt, ctx.qry.grep,
 				      ctx.qry.search, ctx.qry.showmsg,
 				      ctx.qry.follow);
@@ -528,7 +527,7 @@ void cgit_print_log(const char *tip, int ofs, int cnt, char *grep, char *pattern
 		if ((commit = get_revision(&rev)) != NULL) {
 			html("<li>");
 			cgit_log_link("[next]", NULL, NULL, ctx.qry.head,
-				      ctx.qry.sha1, ctx.qry.vpath,
+				      ctx.qry.oid, ctx.qry.vpath,
 				      ofs + cnt, ctx.qry.grep,
 				      ctx.qry.search, ctx.qry.showmsg,
 				      ctx.qry.follow);
diff --git a/ui-patch.c b/ui-patch.c
index 5a96410..4ac03cb 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -61,7 +61,7 @@ void cgit_print_patch(const char *new_rev, const char *old_rev,
 	}
 
 	if (is_null_oid(&old_rev_oid)) {
-		memcpy(rev_range, oid_to_hex(&new_rev_oid), GIT_SHA1_HEXSZ + 1);
+		memcpy(rev_range, oid_to_hex(&new_rev_oid), the_hash_algo->hexsz + 1);
 	} else {
 		xsnprintf(rev_range, REV_RANGE_LEN, "%s..%s", oid_to_hex(&old_rev_oid),
 			oid_to_hex(&new_rev_oid));
diff --git a/ui-plain.c b/ui-plain.c
index b73c1cf..65a205f 100644
--- a/ui-plain.c
+++ b/ui-plain.c
@@ -99,7 +99,7 @@ static void print_dir(const struct object_id *oid, const char *base,
 			fullpath = NULL;
 		}
 		html("<li>");
-		cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+		cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.oid,
 				fullpath);
 		html("</li>\n");
 	}
@@ -118,7 +118,7 @@ static void print_dir_entry(const struct object_id *oid, const char *base,
 	if (S_ISGITLINK(mode)) {
 		cgit_submodule_link(NULL, fullpath, oid_to_hex(oid));
 	} else
-		cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+		cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.oid,
 				fullpath);
 	html("</li>\n");
 	free(fullpath);
@@ -130,7 +130,7 @@ static void print_dir_tail(void)
 }
 
 static int walk_tree(const struct object_id *oid, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;
 
@@ -163,7 +163,7 @@ static int basedir_len(const char *path)
 
 void cgit_print_plain(void)
 {
-	const char *rev = ctx.qry.sha1;
+	const char *rev = ctx.qry.oid;
 	struct object_id oid;
 	struct commit *commit;
 	struct pathspec_item path_items = {
@@ -193,13 +193,13 @@ void cgit_print_plain(void)
 	if (!path_items.match) {
 		path_items.match = "";
 		walk_tree_ctx.match_baselen = -1;
-		print_dir(&commit->maybe_tree->object.oid, "", 0, "");
+		print_dir(get_commit_tree_oid(commit), "", 0, "");
 		walk_tree_ctx.match = 2;
 	}
 	else
 		walk_tree_ctx.match_baselen = basedir_len(path_items.match);
-	read_tree_recursive(the_repository, commit->maybe_tree,
-		"", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+		  &paths, walk_tree, &walk_tree_ctx);
 	if (!walk_tree_ctx.match)
 		cgit_print_error_page(404, "Not found", "Not found");
 	else if (walk_tree_ctx.match == 2)
diff --git a/ui-repolist.c b/ui-repolist.c
index 529a203..d12e3dd 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -321,7 +321,7 @@ void cgit_print_repolist(void)
 		}
 		htmlf("<tr><td class='%s'>",
 		      !sorted && section ? "sublevel-repo" : "toplevel-repo");
-		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
+		cgit_summary_link(ctx.repo->name, NULL, NULL, NULL);
 		html("</td><td>");
 		repourl = cgit_repourl(ctx.repo->url);
 		html_link_open(repourl, NULL, NULL);
diff --git a/ui-shared.c b/ui-shared.c
index d2358f2..baea6f2 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -22,10 +22,11 @@ static char *http_date(time_t t)
 	static char month[][4] =
 		{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
 		 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
-	struct tm *tm = gmtime(&t);
-	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
-		   tm->tm_mday, month[tm->tm_mon], 1900 + tm->tm_year,
-		   tm->tm_hour, tm->tm_min, tm->tm_sec);
+	struct tm tm;
+	gmtime_r(&t, &tm);
+	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm.tm_wday],
+		   tm.tm_mday, month[tm.tm_mon], 1900 + tm.tm_year,
+		   tm.tm_hour, tm.tm_min, tm.tm_sec);
 }
 
 void cgit_print_error(const char *fmt, ...)
@@ -521,45 +522,45 @@ static void cgit_self_link(char *name, const char *title, const char *class)
 	else if (!strcmp(ctx.qry.page, "summary"))
 		cgit_summary_link(name, title, class, ctx.qry.head);
 	else if (!strcmp(ctx.qry.page, "tag"))
-		cgit_tag_link(name, title, class, ctx.qry.has_sha1 ?
-			       ctx.qry.sha1 : ctx.qry.head);
+		cgit_tag_link(name, title, class, ctx.qry.has_oid ?
+			       ctx.qry.oid : ctx.qry.head);
 	else if (!strcmp(ctx.qry.page, "tree"))
 		cgit_tree_link(name, title, class, ctx.qry.head,
-			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			       ctx.qry.has_oid ? ctx.qry.oid : NULL,
 			       ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "plain"))
 		cgit_plain_link(name, title, class, ctx.qry.head,
-				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "blame"))
 		cgit_blame_link(name, title, class, ctx.qry.head,
-				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "log"))
 		cgit_log_link(name, title, class, ctx.qry.head,
-			      ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			      ctx.qry.has_oid ? ctx.qry.oid : NULL,
 			      ctx.qry.path, ctx.qry.ofs,
 			      ctx.qry.grep, ctx.qry.search,
 			      ctx.qry.showmsg, ctx.qry.follow);
 	else if (!strcmp(ctx.qry.page, "commit"))
 		cgit_commit_link(name, title, class, ctx.qry.head,
-				 ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				 ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				 ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "patch"))
 		cgit_patch_link(name, title, class, ctx.qry.head,
-				ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "refs"))
 		cgit_refs_link(name, title, class, ctx.qry.head,
-			       ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+			       ctx.qry.has_oid ? ctx.qry.oid : NULL,
 			       ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "snapshot"))
 		cgit_snapshot_link(name, title, class, ctx.qry.head,
-				   ctx.qry.has_sha1 ? ctx.qry.sha1 : NULL,
+				   ctx.qry.has_oid ? ctx.qry.oid : NULL,
 				   ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "diff"))
 		cgit_diff_link(name, title, class, ctx.qry.head,
-			       ctx.qry.sha1, ctx.qry.sha2,
+			       ctx.qry.oid, ctx.qry.oid2,
 			       ctx.qry.path);
 	else if (!strcmp(ctx.qry.page, "stats"))
 		cgit_stats_link(name, title, class, ctx.qry.head,
@@ -672,7 +673,7 @@ const struct date_mode *cgit_date_mode(enum date_mode_type type)
 static void print_rel_date(time_t t, int tz, double value,
 	const char *class, const char *suffix)
 {
-	htmlf("<span class='%s' title='", class);
+	htmlf("<span class='%s' data-ut='%" PRIu64 "' title='", class, (uint64_t)t);
 	html_attr(show_date(t, tz, cgit_date_mode(DATE_ISO8601)));
 	htmlf("'>%.0f %s</span>", value, suffix);
 }
@@ -767,6 +768,38 @@ static void print_rel_vcs_link(const char *url)
 	html(" Git repository'/>\n");
 }
 
+static int emit_css_link(struct string_list_item *s, void *arg)
+{
+	/* Do not emit anything if css= is specified. */
+	if (s && *s->string == '\0')
+		return 0;
+
+	html("<link rel='stylesheet' type='text/css' href='");
+	if (s)
+		html_attr(s->string);
+	else
+		html_attr((const char *)arg);
+	html("'/>\n");
+
+	return 0;
+}
+
+static int emit_js_link(struct string_list_item *s, void *arg)
+{
+	/* Do not emit anything if js= is specified. */
+	if (s && *s->string == '\0')
+		return 0;
+
+	html("<script type='text/javascript' src='");
+	if (s)
+		html_attr(s->string);
+	else
+		html_attr((const char *)arg);
+	html("'></script>\n");
+
+	return 0;
+}
+
 void cgit_print_docstart(void)
 {
 	char *host = cgit_hosturl();
@@ -786,9 +819,17 @@ void cgit_print_docstart(void)
 	htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 	if (ctx.cfg.robots && *ctx.cfg.robots)
 		htmlf("<meta name='robots' content='%s'/>\n", ctx.cfg.robots);
-	html("<link rel='stylesheet' type='text/css' href='");
-	html_attr(ctx.cfg.css);
-	html("'/>\n");
+
+	if (ctx.cfg.css.items)
+		for_each_string_list(&ctx.cfg.css, emit_css_link, NULL);
+	else
+		emit_css_link(NULL, "/cgit.css");
+
+	if (ctx.cfg.js.items)
+		for_each_string_list(&ctx.cfg.js, emit_js_link, NULL);
+	else
+		emit_js_link(NULL, "/cgit.js");
+
 	if (ctx.cfg.favicon) {
 		html("<link rel='shortcut icon' href='");
 		html_attr(ctx.cfg.favicon);
@@ -918,10 +959,10 @@ void cgit_add_hidden_formfields(int incl_head, int incl_search,
 	    strcmp(ctx.qry.head, ctx.repo->defbranch))
 		html_hidden("h", ctx.qry.head);
 
-	if (ctx.qry.sha1)
-		html_hidden("id", ctx.qry.sha1);
-	if (ctx.qry.sha2)
-		html_hidden("id2", ctx.qry.sha2);
+	if (ctx.qry.oid)
+		html_hidden("id", ctx.qry.oid);
+	if (ctx.qry.oid2)
+		html_hidden("id2", ctx.qry.oid2);
 	if (ctx.qry.showmsg)
 		html_hidden("showmsg", "1");
 
@@ -994,7 +1035,7 @@ static void print_header(void)
 	if (ctx.repo) {
 		cgit_index_link("index", NULL, NULL, NULL, NULL, 0, 1);
 		html(" : ");
-		cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
+		cgit_summary_link(ctx.repo->name, NULL, NULL, NULL);
 		if (ctx.env.authenticated) {
 			html("</td><td class='form'>");
 			html("<form method='get'>\n");
@@ -1015,7 +1056,13 @@ static void print_header(void)
 	if (ctx.repo) {
 		html_txt(ctx.repo->desc);
 		html("</td><td class='sub right'>");
-		html_txt(ctx.repo->owner);
+		if (ctx.repo->owner_filter) {
+			cgit_open_filter(ctx.repo->owner_filter);
+			html_txt(ctx.repo->owner);
+			cgit_close_filter(ctx.repo->owner_filter);
+		} else {
+			html_txt(ctx.repo->owner);
+		}
 	} else {
 		if (ctx.cfg.root_desc)
 			html_txt(ctx.cfg.root_desc);
@@ -1038,20 +1085,20 @@ void cgit_print_pageheader(void)
 		cgit_summary_link("summary", NULL, hc("summary"),
 				  ctx.qry.head);
 		cgit_refs_link("refs", NULL, hc("refs"), ctx.qry.head,
-			       ctx.qry.sha1, NULL);
+			       ctx.qry.oid, NULL);
 		cgit_log_link("log", NULL, hc("log"), ctx.qry.head,
 			      NULL, ctx.qry.vpath, 0, NULL, NULL,
 			      ctx.qry.showmsg, ctx.qry.follow);
 		if (ctx.qry.page && !strcmp(ctx.qry.page, "blame"))
 			cgit_blame_link("blame", NULL, hc("blame"), ctx.qry.head,
-				        ctx.qry.sha1, ctx.qry.vpath);
+				        ctx.qry.oid, ctx.qry.vpath);
 		else
 			cgit_tree_link("tree", NULL, hc("tree"), ctx.qry.head,
-				       ctx.qry.sha1, ctx.qry.vpath);
+				       ctx.qry.oid, ctx.qry.vpath);
 		cgit_commit_link("commit", NULL, hc("commit"),
-				 ctx.qry.head, ctx.qry.sha1, ctx.qry.vpath);
+				 ctx.qry.head, ctx.qry.oid, ctx.qry.vpath);
 		cgit_diff_link("diff", NULL, hc("diff"), ctx.qry.head,
-			       ctx.qry.sha1, ctx.qry.sha2, ctx.qry.vpath);
+			       ctx.qry.oid, ctx.qry.oid2, ctx.qry.vpath);
 		if (ctx.repo->max_stats)
 			cgit_stats_link("stats", NULL, hc("stats"),
 					ctx.qry.head, ctx.qry.vpath);
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 9461d51..18361a6 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -13,32 +13,32 @@
 
 static int write_archive_type(const char *format, const char *hex, const char *prefix)
 {
-	struct argv_array argv = ARGV_ARRAY_INIT;
+	struct strvec argv = STRVEC_INIT;
 	const char **nargv;
 	int result;
-	argv_array_push(&argv, "snapshot");
-	argv_array_push(&argv, format);
+	strvec_push(&argv, "snapshot");
+	strvec_push(&argv, format);
 	if (prefix) {
 		struct strbuf buf = STRBUF_INIT;
 		strbuf_addstr(&buf, prefix);
 		strbuf_addch(&buf, '/');
-		argv_array_push(&argv, "--prefix");
-		argv_array_push(&argv, buf.buf);
+		strvec_push(&argv, "--prefix");
+		strvec_push(&argv, buf.buf);
 		strbuf_release(&buf);
 	}
-	argv_array_push(&argv, hex);
+	strvec_push(&argv, hex);
 	/*
 	 * Now we need to copy the pointers to arguments into a new
 	 * structure because write_archive will rearrange its arguments
 	 * which may result in duplicated/missing entries causing leaks
-	 * or double-frees in argv_array_clear.
+	 * or double-frees in strvec_clear.
 	 */
-	nargv = xmalloc(sizeof(char *) * (argv.argc + 1));
-	/* argv_array guarantees a trailing NULL entry. */
-	memcpy(nargv, argv.argv, sizeof(char *) * (argv.argc + 1));
+	nargv = xmalloc(sizeof(char *) * (argv.nr + 1));
+	/* strvec guarantees a trailing NULL entry. */
+	memcpy(nargv, argv.v, sizeof(char *) * (argv.nr + 1));
 
-	result = write_archive(argv.argc, nargv, NULL, the_repository, NULL, 0);
-	argv_array_clear(&argv);
+	result = write_archive(argv.nr, nargv, NULL, the_repository, NULL, 0);
+	strvec_clear(&argv);
 	free(nargv);
 	return result;
 }
@@ -79,18 +79,32 @@ static int write_tar_bzip2_archive(const char *hex, const char *prefix)
 	return write_compressed_tar_archive(hex, prefix, argv);
 }
 
+static int write_tar_lzip_archive(const char *hex, const char *prefix)
+{
+	char *argv[] = { "lzip", NULL };
+	return write_compressed_tar_archive(hex, prefix, argv);
+}
+
 static int write_tar_xz_archive(const char *hex, const char *prefix)
 {
 	char *argv[] = { "xz", NULL };
 	return write_compressed_tar_archive(hex, prefix, argv);
 }
 
+static int write_tar_zstd_archive(const char *hex, const char *prefix)
+{
+	char *argv[] = { "zstd", "-T0", NULL };
+	return write_compressed_tar_archive(hex, prefix, argv);
+}
+
 const struct cgit_snapshot_format cgit_snapshot_formats[] = {
 	/* .tar must remain the 0 index */
 	{ ".tar",	"application/x-tar",	write_tar_archive	},
 	{ ".tar.gz",	"application/x-gzip",	write_tar_gzip_archive	},
 	{ ".tar.bz2",	"application/x-bzip2",	write_tar_bzip2_archive	},
+	{ ".tar.lz",	"application/x-lzip",	write_tar_lzip_archive	},
 	{ ".tar.xz",	"application/x-xz",	write_tar_xz_archive	},
+	{ ".tar.zst",	"application/x-zstd",	write_tar_zstd_archive	},
 	{ ".zip",	"application/x-zip",	write_zip_archive	},
 	{ NULL }
 };
diff --git a/ui-stats.c b/ui-stats.c
index 7272a61..40ed6c2 100644
--- a/ui-stats.c
+++ b/ui-stats.c
@@ -166,7 +166,7 @@ static void add_commit(struct string_list *authors, struct commit *commit,
 	struct authorstat *authorstat;
 	struct string_list *items;
 	char *tmp;
-	struct tm *date;
+	struct tm date;
 	time_t t;
 	uintptr_t *counter;
 
@@ -180,9 +180,9 @@ static void add_commit(struct string_list *authors, struct commit *commit,
 	authorstat = author->util;
 	items = &authorstat->list;
 	t = info->committer_date;
-	date = gmtime(&t);
-	period->trunc(date);
-	tmp = xstrdup(period->pretty(date));
+	gmtime_r(&t, &date);
+	period->trunc(&date);
+	tmp = xstrdup(period->pretty(&date));
 	item = string_list_insert(items, tmp);
 	counter = (uintptr_t *)&item->util;
 	if (*counter)
@@ -215,15 +215,15 @@ static struct string_list collect_stats(const struct cgit_period *period)
 	int argc = 3;
 	time_t now;
 	long i;
-	struct tm *tm;
+	struct tm tm;
 	char tmp[11];
 
 	time(&now);
-	tm = gmtime(&now);
-	period->trunc(tm);
+	gmtime_r(&now, &tm);
+	period->trunc(&tm);
 	for (i = 1; i < period->count; i++)
-		period->dec(tm);
-	strftime(tmp, sizeof(tmp), "%Y-%m-%d", tm);
+		period->dec(&tm);
+	strftime(tmp, sizeof(tmp), "%Y-%m-%d", &tm);
 	argv[2] = xstrdup(fmt("--since=%s", tmp));
 	if (ctx.qry.path) {
 		argv[3] = "--";
@@ -241,8 +241,7 @@ static struct string_list collect_stats(const struct cgit_period *period)
 	memset(&authors, 0, sizeof(authors));
 	while ((commit = get_revision(&rev)) != NULL) {
 		add_commit(&authors, commit, period);
-		free_commit_buffer(the_repository->parsed_objects, commit);
-		free_commit_list(commit->parents);
+		release_commit_memory(the_repository->parsed_objects, commit);
 		commit->parents = NULL;
 	}
 	return authors;
@@ -261,21 +260,21 @@ static void print_combined_authorrow(struct string_list *authors, int from,
 	struct string_list_item *date;
 	time_t now;
 	long i, j, total, subtotal;
-	struct tm *tm;
+	struct tm tm;
 	char *tmp;
 
 	time(&now);
-	tm = gmtime(&now);
-	period->trunc(tm);
+	gmtime_r(&now, &tm);
+	period->trunc(&tm);
 	for (i = 1; i < period->count; i++)
-		period->dec(tm);
+		period->dec(&tm);
 
 	total = 0;
 	htmlf("<tr><td class='%s'>%s</td>", leftclass,
 		fmt(name, to - from + 1));
 	for (j = 0; j < period->count; j++) {
-		tmp = period->pretty(tm);
-		period->inc(tm);
+		tmp = period->pretty(&tm);
+		period->inc(&tm);
 		subtotal = 0;
 		for (i = from; i <= to; i++) {
 			author = &authors->items[i];
@@ -300,20 +299,20 @@ static void print_authors(struct string_list *authors, int top,
 	struct string_list_item *date;
 	time_t now;
 	long i, j, total;
-	struct tm *tm;
+	struct tm tm;
 	char *tmp;
 
 	time(&now);
-	tm = gmtime(&now);
-	period->trunc(tm);
+	gmtime_r(&now, &tm);
+	period->trunc(&tm);
 	for (i = 1; i < period->count; i++)
-		period->dec(tm);
+		period->dec(&tm);
 
 	html("<table class='stats'><tr><th>Author</th>");
 	for (j = 0; j < period->count; j++) {
-		tmp = period->pretty(tm);
+		tmp = period->pretty(&tm);
 		htmlf("<th>%s</th>", tmp);
-		period->inc(tm);
+		period->inc(&tm);
 	}
 	html("<th>Total</th></tr>\n");
 
@@ -329,10 +328,10 @@ static void print_authors(struct string_list *authors, int top,
 		items = &authorstat->list;
 		total = 0;
 		for (j = 0; j < period->count; j++)
-			period->dec(tm);
+			period->dec(&tm);
 		for (j = 0; j < period->count; j++) {
-			tmp = period->pretty(tm);
-			period->inc(tm);
+			tmp = period->pretty(&tm);
+			period->inc(&tm);
 			date = string_list_lookup(items, tmp);
 			if (!date)
 				html("<td>0</td>");
diff --git a/ui-tag.c b/ui-tag.c
index 846d5b1..424bbcc 100644
--- a/ui-tag.c
+++ b/ui-tag.c
@@ -33,7 +33,7 @@ static void print_tag_content(char *buf)
 
 static void print_download_links(char *revname)
 {
-	html("<tr><th>download</th><td class='sha1'>");
+	html("<tr><th>download</th><td class='oid'>");
 	cgit_print_snapshot_links(ctx.repo, revname, "<br/>");
 	html("</td></tr>");
 }
@@ -91,7 +91,7 @@ void cgit_print_tag(char *revname)
 			cgit_close_filter(ctx.repo->email_filter);
 			html("</td></tr>\n");
 		}
-		html("<tr><td>tagged object</td><td class='sha1'>");
+		html("<tr><td>tagged object</td><td class='oid'>");
 		cgit_object_link(tag->tagged);
 		html("</td></tr>\n");
 		if (ctx.repo->snapshots)
@@ -106,7 +106,7 @@ void cgit_print_tag(char *revname)
 		html("<tr><td>tag name</td><td>");
 		html_txt(revname);
 		html("</td></tr>\n");
-		html("<tr><td>tagged object</td><td class='sha1'>");
+		html("<tr><td>tagged object</td><td class='oid'>");
 		cgit_object_link(obj);
 		html("</td></tr>\n");
 		if (ctx.repo->snapshots)
diff --git a/ui-tree.c b/ui-tree.c
index 84eb17d..98ce1ca 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -89,6 +89,7 @@ static void print_object(const struct object_id *oid, const char *path, const ch
 	enum object_type type;
 	char *buf;
 	unsigned long size;
+	bool is_binary;
 
 	type = oid_object_info(the_repository, oid, &size);
 	if (type == OBJ_BAD) {
@@ -103,6 +104,7 @@ static void print_object(const struct object_id *oid, const char *path, const ch
 			"Error reading object %s", oid_to_hex(oid));
 		return;
 	}
+	is_binary = buffer_is_binary(buf, size);
 
 	cgit_set_title_from_path(path);
 
@@ -110,7 +112,7 @@ static void print_object(const struct object_id *oid, const char *path, const ch
 	htmlf("blob: %s (", oid_to_hex(oid));
 	cgit_plain_link("plain", NULL, NULL, ctx.qry.head,
 		        rev, path);
-	if (ctx.repo->enable_blame) {
+	if (ctx.repo->enable_blame && !is_binary) {
 		html(") (");
 		cgit_blame_link("blame", NULL, NULL, ctx.qry.head,
 			        rev, path);
@@ -123,7 +125,7 @@ static void print_object(const struct object_id *oid, const char *path, const ch
 		return;
 	}
 
-	if (buffer_is_binary(buf, size))
+	if (is_binary)
 		print_binary_buffer(buf, size);
 	else
 		print_text_buffer(basename, buf, size);
@@ -139,8 +141,7 @@ struct single_tree_ctx {
 };
 
 static int single_tree_cb(const struct object_id *oid, struct strbuf *base,
-			  const char *pathname, unsigned mode, int stage,
-			  void *cbdata)
+			  const char *pathname, unsigned mode, void *cbdata)
 {
 	struct single_tree_ctx *ctx = cbdata;
 
@@ -185,8 +186,7 @@ static void write_tree_link(const struct object_id *oid, char *name,
 		tree_ctx.name = NULL;
 		tree_ctx.count = 0;
 
-		read_tree_recursive(the_repository, tree, "", 0, 1,
-			&paths, single_tree_cb, &tree_ctx);
+		read_tree(the_repository, tree, &paths, single_tree_cb, &tree_ctx);
 
 		if (tree_ctx.count != 1)
 			break;
@@ -199,14 +199,16 @@ static void write_tree_link(const struct object_id *oid, char *name,
 }
 
 static int ls_item(const struct object_id *oid, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;
 	char *name;
 	struct strbuf fullpath = STRBUF_INIT;
+	struct strbuf linkpath = STRBUF_INIT;
 	struct strbuf class = STRBUF_INIT;
 	enum object_type type;
 	unsigned long size = 0;
+	char *buf;
 
 	name = xstrdup(pathname);
 	strbuf_addf(&fullpath, "%s%s%s", ctx.qry.path ? ctx.qry.path : "",
@@ -218,8 +220,7 @@ static int ls_item(const struct object_id *oid, struct strbuf *base,
 			htmlf("<tr><td colspan='3'>Bad object: %s %s</td></tr>",
 			      name,
 			      oid_to_hex(oid));
-			free(name);
-			return 0;
+			goto cleanup;
 		}
 	}
 
@@ -239,6 +240,21 @@ static int ls_item(const struct object_id *oid, struct strbuf *base,
 		cgit_tree_link(name, NULL, class.buf, ctx.qry.head,
 			       walk_tree_ctx->curr_rev, fullpath.buf);
 	}
+	if (S_ISLNK(mode)) {
+		html(" -> ");
+		buf = read_object_file(oid, &type, &size);
+		if (!buf) {
+			htmlf("Error reading object: %s", oid_to_hex(oid));
+			goto cleanup;
+		}
+		strbuf_addbuf(&linkpath, &fullpath);
+		strbuf_addf(&linkpath, "/../%s", buf);
+		strbuf_normalize_path(&linkpath);
+		cgit_tree_link(buf, NULL, class.buf, ctx.qry.head,
+			walk_tree_ctx->curr_rev, linkpath.buf);
+		free(buf);
+		strbuf_release(&linkpath);
+	}
 	htmlf("</td><td class='ls-size'>%li</td>", size);
 
 	html("<td>");
@@ -255,6 +271,8 @@ static int ls_item(const struct object_id *oid, struct strbuf *base,
 		cgit_blame_link("blame", NULL, "button", ctx.qry.head,
 				walk_tree_ctx->curr_rev, fullpath.buf);
 	html("</td></tr>\n");
+
+cleanup:
 	free(name);
 	strbuf_release(&fullpath);
 	strbuf_release(&class);
@@ -294,14 +312,13 @@ static void ls_tree(const struct object_id *oid, const char *path, struct walk_t
 	}
 
 	ls_head();
-	read_tree_recursive(the_repository, tree, "", 0, 1,
-		&paths, ls_item, walk_tree_ctx);
+	read_tree(the_repository, tree, &paths, ls_item, walk_tree_ctx);
 	ls_tail();
 }
 
 
 static int walk_tree(const struct object_id *oid, struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *cbdata)
+		const char *pathname, unsigned mode, void *cbdata)
 {
 	struct walk_tree_context *walk_tree_ctx = cbdata;
 
@@ -326,7 +343,7 @@ static int walk_tree(const struct object_id *oid, struct strbuf *base,
 			return 0;
 		}
 	}
-	ls_item(oid, base, pathname, mode, stage, walk_tree_ctx);
+	ls_item(oid, base, pathname, mode, walk_tree_ctx);
 	return 0;
 }
 
@@ -370,12 +387,12 @@ void cgit_print_tree(const char *rev, char *path)
 	walk_tree_ctx.curr_rev = xstrdup(rev);
 
 	if (path == NULL) {
-		ls_tree(&commit->maybe_tree->object.oid, NULL, &walk_tree_ctx);
+		ls_tree(get_commit_tree_oid(commit), NULL, &walk_tree_ctx);
 		goto cleanup;
 	}
 
-	read_tree_recursive(the_repository, commit->maybe_tree, "", 0, 0,
-		&paths, walk_tree, &walk_tree_ctx);
+	read_tree(the_repository, repo_get_commit_tree(the_repository, commit),
+		  &paths, walk_tree, &walk_tree_ctx);
 	if (walk_tree_ctx.state == 1)
 		ls_tail();
 	else if (walk_tree_ctx.state == 2)