27 files changed, 553 insertions, 151 deletions

diff --git a/.gitignore b/.gitignore
index 1e016e5..487728b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,9 @@ cgit
 cgit.conf
 VERSION
+cgitrc.5
+cgitrc.5.fo
+cgitrc.5.html
+cgitrc.5.pdf
+cgitrc.5.xml
 *.o
 *.d
diff --git a/Makefile b/Makefile
index 33c606d..1f9893a 100644
--- a/Makefile
+++ b/Makefile
@@ -6,5 +6,5 @@ CGIT_CONFIG = /etc/cgitrc
 CACHE_ROOT = /var/cache/cgit
 SHA1_HEADER = <openssl/sha.h>
-GIT_VER = 1.6.1.1
+GIT_VER = 1.6.3.4
 GIT_URL = http://www.kernel.org/pub/software/scm/git/git-$(GIT_VER).tar.bz2
 INSTALL = install
@@ -101,5 +101,6 @@ endif
 
 
-.PHONY: all libgit test install uninstall clean force-version get-git
+.PHONY: all libgit test install uninstall clean force-version get-git \
+	doc man-doc html-doc clean-doc
 
 all: cgit
@@ -150,7 +151,21 @@ uninstall:
 	rm -f $(CGIT_DATA_PATH)/cgit.png
 
-clean:
+doc: man-doc html-doc pdf-doc
+
+man-doc: cgitrc.5.txt
+	a2x -f manpage cgitrc.5.txt
+
+html-doc: cgitrc.5.txt
+	a2x -f xhtml --stylesheet=cgit-doc.css cgitrc.5.txt
+
+pdf-doc: cgitrc.5.txt
+	a2x -f pdf cgitrc.5.txt
+
+clean: clean-doc
 	rm -f cgit VERSION *.o *.d
 
+clean-doc:
+	rm -f cgitrc.5 cgitrc.5.html cgitrc.5.pdf cgitrc.5.xml cgitrc.5.fo
+
 get-git:
 	curl $(GIT_URL) | tar -xj && rm -rf git && mv git-$(GIT_VER) git
diff --git a/cgit-doc.css b/cgit-doc.css
new file mode 100644
index 0000000..5a399b6
--- a/dev/null
+++ b/cgit-doc.css
@@ -0,0 +1,3 @@
+div.variablelist dt {
+	margin-top: 1em;
+}
diff --git a/cgit.c b/cgit.c
index 5301840..5816f3d 100644
--- a/cgit.c
+++ b/cgit.c
@@ -18,4 +18,27 @@
 const char *cgit_version = CGIT_VERSION;
 
+void add_mimetype(const char *name, const char *value)
+{
+	struct string_list_item *item;
+
+	item = string_list_insert(xstrdup(name), &ctx.cfg.mimetypes);
+	item->util = xstrdup(value);
+}
+
+struct cgit_filter *new_filter(const char *cmd, int extra_args)
+{
+	struct cgit_filter *f;
+
+	if (!cmd || !cmd[0])
+		return NULL;
+
+	f = xmalloc(sizeof(struct cgit_filter));
+	f->cmd = xstrdup(cmd);
+	f->argv = xmalloc((2 + extra_args) * sizeof(char *));
+	f->argv[0] = f->cmd;
+	f->argv[1] = NULL;
+	return f;
+}
+
 void config_cb(const char *name, const char *value)
 {
@@ -32,4 +55,6 @@ void config_cb(const char *name, const char *value)
 	else if (!strcmp(name, "footer"))
 		ctx.cfg.footer = xstrdup(value);
+	else if (!strcmp(name, "head-include"))
+		ctx.cfg.head_include = xstrdup(value);
 	else if (!strcmp(name, "header"))
 		ctx.cfg.header = xstrdup(value);
@@ -50,4 +75,8 @@ void config_cb(const char *name, const char *value)
 	} else if (!strcmp(name, "nocache"))
 		ctx.cfg.nocache = atoi(value);
+	else if (!strcmp(name, "noplainemail"))
+		ctx.cfg.noplainemail = atoi(value);
+	else if (!strcmp(name, "noheader"))
+		ctx.cfg.noheader = atoi(value);
 	else if (!strcmp(name, "snapshots"))
 		ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
@@ -72,4 +101,10 @@ void config_cb(const char *name, const char *value)
 	else if (!strcmp(name, "cache-dynamic-ttl"))
 		ctx.cfg.cache_dynamic_ttl = atoi(value);
+	else if (!strcmp(name, "about-filter"))
+		ctx.cfg.about_filter = new_filter(value, 0);
+	else if (!strcmp(name, "commit-filter"))
+		ctx.cfg.commit_filter = new_filter(value, 0);
+	else if (!strcmp(name, "embedded"))
+		ctx.cfg.embedded = atoi(value);
 	else if (!strcmp(name, "max-message-length"))
 		ctx.cfg.max_msg_len = atoi(value);
@@ -80,4 +115,6 @@ void config_cb(const char *name, const char *value)
 	else if (!strcmp(name, "max-commit-count"))
 		ctx.cfg.max_commit_count = atoi(value);
+	else if (!strcmp(name, "source-filter"))
+		ctx.cfg.source_filter = new_filter(value, 1);
 	else if (!strcmp(name, "summary-log"))
 		ctx.cfg.summary_log = atoi(value);
@@ -96,4 +133,6 @@ void config_cb(const char *name, const char *value)
 	else if (!strcmp(name, "local-time"))
 		ctx.cfg.local_time = atoi(value);
+	else if (!prefixcmp(name, "mimetype."))
+		add_mimetype(name + 9, value);
 	else if (!strcmp(name, "repo.group"))
 		ctx.cfg.repo_group = xstrdup(value);
@@ -122,4 +161,10 @@ void config_cb(const char *name, const char *value)
 	else if (ctx.repo && !strcmp(name, "repo.module-link"))
 		ctx.repo->module_link= xstrdup(value);
+	else if (ctx.repo && !strcmp(name, "repo.about-filter"))
+		ctx.repo->about_filter = new_filter(value, 0);
+	else if (ctx.repo && !strcmp(name, "repo.commit-filter"))
+		ctx.repo->commit_filter = new_filter(value, 0);
+	else if (ctx.repo && !strcmp(name, "repo.source-filter"))
+		ctx.repo->source_filter = new_filter(value, 1);
 	else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
 		if (*value == '/')
@@ -174,4 +219,9 @@ static void querystring_cb(const char *name, const char *value)
 }
 
+char *xstrdupn(const char *str)
+{
+	return (str ? xstrdup(str) : NULL);
+}
+
 static void prepare_context(struct cgit_context *ctx)
 {
@@ -187,5 +237,5 @@ static void prepare_context(struct cgit_context *ctx)
 	ctx->cfg.cache_static_ttl = -1;
 	ctx->cfg.css = "/cgit.css";
-	ctx->cfg.logo = "/git-logo.png";
+	ctx->cfg.logo = "/cgit.png";
 	ctx->cfg.local_time = 0;
 	ctx->cfg.max_repo_count = 50;
@@ -204,4 +254,14 @@ static void prepare_context(struct cgit_context *ctx)
 	ctx->cfg.summary_log = 10;
 	ctx->cfg.summary_tags = 10;
+	ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
+	ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
+	ctx->env.https = xstrdupn(getenv("HTTPS"));
+	ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
+	ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
+	ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
+	ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
+	ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
+	ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
+	ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
 	ctx->page.mimetype = "text/html";
 	ctx->page.charset = PAGE_ENCODING;
@@ -210,4 +270,12 @@ static void prepare_context(struct cgit_context *ctx)
 	ctx->page.modified = time(NULL);
 	ctx->page.expires = ctx->page.modified;
+	ctx->page.etag = NULL;
+	memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
+	if (ctx->env.script_name)
+		ctx->cfg.script_name = ctx->env.script_name;
+	if (ctx->env.query_string)
+		ctx->qry.raw = ctx->env.query_string;
+	if (!ctx->env.cgit_config)
+		ctx->env.cgit_config = CGIT_CONFIG;
 }
 
@@ -289,4 +357,6 @@ static int prepare_repo_cmd(struct cgit_context *ctx)
 		tmp = xstrdup(ctx->qry.head);
 		ctx->qry.head = ctx->repo->defbranch;
+		ctx->page.status = 404;
+		ctx->page.statusmsg = "not found";
 		cgit_print_http_headers(ctx);
 		cgit_print_docstart(ctx);
@@ -380,4 +450,7 @@ static void cgit_parse_args(int argc, const char **argv)
 			ctx.cfg.nocache = 1;
 		}
+		if (!strcmp(argv[i], "--nohttp")) {
+			ctx.env.no_http = "1";
+		}
 		if (!strncmp(argv[i], "--query=", 8)) {
 			ctx.qry.raw = xstrdup(argv[i]+8);
@@ -432,5 +505,4 @@ static int calc_ttl()
 int main(int argc, const char **argv)
 {
-	const char *cgit_config_env = getenv("CGIT_CONFIG");
 	const char *path;
 	char *qry;
@@ -442,11 +514,6 @@ int main(int argc, const char **argv)
 	cgit_repolist.repos = NULL;
 
-	if (getenv("SCRIPT_NAME"))
-		ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME"));
-	if (getenv("QUERY_STRING"))
-		ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));
 	cgit_parse_args(argc, argv);
-	parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
-			 config_cb);
+	parse_configfile(ctx.env.cgit_config, config_cb);
 	ctx.repo = NULL;
 	http_parse_querystring(ctx.qry.raw, querystring_cb);
@@ -463,5 +530,5 @@ int main(int argc, const char **argv)
 	 * long as PATH_INFO is included in the cache lookup key).
 	 */
-	path = getenv("PATH_INFO");
+	path = ctx.env.path_info;
 	if (!ctx.qry.url && path) {
 		if (path[0] == '/')
@@ -479,4 +546,6 @@ int main(int argc, const char **argv)
 	ttl = calc_ttl();
 	ctx.page.expires += ttl*60;
+	if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
+		ctx.cfg.nocache = 1;
 	if (ctx.cfg.nocache)
 		ctx.cfg.cache_size = 0;
diff --git a/cgit.css b/cgit.css
index adfc8ae..e3b32e7 100644
--- a/cgit.css
+++ b/cgit.css
@@ -156,5 +156,5 @@ table.list td.logmsg {
 	font-family: monospace;
 	white-space: pre;
-	padding: 1em 0em 2em 0em;
+	padding: 1em 0.5em 2em 0.5em;
 }
 
diff --git a/cgit.h b/cgit.h
index 5f7af51..d90ccdc 100644
--- a/cgit.h
+++ b/cgit.h
@@ -16,4 +16,5 @@
 #include <log-tree.h>
 #include <archive.h>
+#include <string-list.h>
 #include <xdiff-interface.h>
 #include <xdiff/xdiff.h>
@@ -49,4 +50,13 @@ typedef void (*filepair_fn)(struct diff_filepair *pair);
 typedef void (*linediff_fn)(char *line, int len);
 
+struct cgit_filter {
+	char *cmd;
+	char **argv;
+	int old_stdout;
+	int pipe_fh[2];
+	int pid;
+	int exitstatus;
+};
+
 struct cgit_repo {
 	char *url;
@@ -65,4 +75,7 @@ struct cgit_repo {
 	int max_stats;
 	time_t mtime;
+	struct cgit_filter *about_filter;
+	struct cgit_filter *commit_filter;
+	struct cgit_filter *source_filter;
 };
 
@@ -137,4 +150,5 @@ struct cgit_config {
 	char *favicon;
 	char *footer;
+	char *head_include;
 	char *header;
 	char *index_header;
@@ -156,4 +170,5 @@ struct cgit_config {
 	int cache_root_ttl;
 	int cache_static_ttl;
+	int embedded;
 	int enable_index_links;
 	int enable_log_filecount;
@@ -167,4 +182,6 @@ struct cgit_config {
 	int max_stats;
 	int nocache;
+	int noplainemail;
+	int noheader;
 	int renamelimit;
 	int snapshots;
@@ -172,4 +189,8 @@ struct cgit_config {
 	int summary_log;
 	int summary_tags;
+	struct string_list mimetypes;
+	struct cgit_filter *about_filter;
+	struct cgit_filter *commit_filter;
+	struct cgit_filter *source_filter;
 };
 
@@ -181,8 +202,25 @@ struct cgit_page {
 	char *charset;
 	char *filename;
+	char *etag;
 	char *title;
+	int status;
+	char *statusmsg;
+};
+
+struct cgit_environment {
+	char *cgit_config;
+	char *http_host;
+	char *https;
+	char *no_http;
+	char *path_info;
+	char *query_string;
+	char *request_method;
+	char *script_name;
+	char *server_name;
+	char *server_port;
 };
 
 struct cgit_context {
+	struct cgit_environment env;
 	struct cgit_query qry;
 	struct cgit_config cfg;
@@ -243,4 +281,7 @@ extern const char *cgit_repobasename(const char *reponame);
 extern int cgit_parse_snapshots_mask(const char *str);
 
+extern int cgit_open_filter(struct cgit_filter *filter);
+extern int cgit_close_filter(struct cgit_filter *filter);
+
 
 #endif /* CGIT_H */
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index fd299ae..3c35b02 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -1,13 +1,13 @@
-CGITRC
-======
+CGITRC(5)
+========
 
 
 NAME
 ----
-	cgitrc - runtime configuration for cgit
+cgitrc - runtime configuration for cgit
 
 
-DESCRIPTION
------------
+SYNOPSIS
+--------
 Cgitrc contains all runtime settings for cgit, including the list of git
 repositories, formatted as a line-separated list of NAME=VALUE pairs. Blank
@@ -15,7 +15,21 @@ lines, and lines starting with '#', are ignored.
 
 
+LOCATION
+--------
+The default location of cgitrc, defined at compile time, is /etc/cgitrc. At
+runtime, cgit will consult the environment variable CGIT_CONFIG and, if
+defined, use its value instead.
+
+
 GLOBAL SETTINGS
 ---------------
-agefile
+about-filter::
+	Specifies a command which will be invoked to format the content of
+	about pages (both top-level and for each repository). The command will
+	get the content of the about-file on its STDIN, and the STDOUT from the
+	command will be included verbatim on the about page. Default value:
+	none.
+
+agefile::
 	Specifies a path, relative to each repository path, which can be used
 	to specify the date and time of the youngest commit in the repository.
@@ -24,31 +38,31 @@ agefile
 	hh:mm:ss". Default value: "info/web/last-modified".
 
-cache-root
+cache-root::
 	Path used to store the cgit cache entries. Default value:
 	"/var/cache/cgit".
 
-cache-dynamic-ttl
+cache-dynamic-ttl::
 	Number which specifies the time-to-live, in minutes, for the cached
 	version of repository pages accessed without a fixed SHA1. Default
 	value: "5".
 
-cache-repo-ttl
+cache-repo-ttl::
 	Number which specifies the time-to-live, in minutes, for the cached
 	version of the repository summary page. Default value: "5".
 
-cache-root-ttl
+cache-root-ttl::
 	Number which specifies the time-to-live, in minutes, for the cached
 	version of the repository index page. Default value: "5".
 
-cache-size
+cache-size::
 	The maximum number of entries in the cgit cache. Default value: "0"
 	(i.e. caching is disabled).
 
-cache-static-ttl
+cache-static-ttl::
 	Number which specifies the time-to-live, in minutes, for the cached
 	version of repository pages accessed with a fixed SHA1. Default value:
 	"5".
 
-clone-prefix
+clone-prefix::
 	Space-separated list of common prefixes which, when combined with a
 	repository url, generates valid clone urls for the repository. This
@@ -56,42 +70,57 @@ clone-prefix
 	none.
 
-css
+commit-filter::
+	Specifies a command which will be invoked to format commit messages.
+	The command will get the message on its STDIN, and the STDOUT from the
+	command will be included verbatim as the commit message, i.e. this can
+	be used to implement bugtracker integration. Default value: none.
+
+css::
 	Url which specifies the css document to include in all cgit pages.
 	Default value: "/cgit.css".
 
-enable-index-links
+embedded::
+	Flag which, when set to "1", will make cgit generate a html fragment
+	suitable for embedding in other html pages. Default value: none. See
+	also: "noheader".
+	
+enable-index-links::
 	Flag which, when set to "1", will make cgit generate extra links for
 	each repo in the repository index (specifically, to the "summary",
 	"commit" and "tree" pages). Default value: "0".
 
-enable-log-filecount
+enable-log-filecount::
 	Flag which, when set to "1", will make cgit print the number of
 	modified files for each commit on the repository log page. Default
 	value: "0".
 
-enable-log-linecount
+enable-log-linecount::
 	Flag which, when set to "1", will make cgit print the number of added
 	and removed lines for each commit on the repository log page. Default
 	value: "0".
 
-favicon
+favicon::
 	Url used as link to a shortcut icon for cgit. If specified, it is
 	suggested to use the value "/favicon.ico" since certain browsers will
 	ignore other values. Default value: none.
 
-footer
+footer::
 	The content of the file specified with this option will be included
 	verbatim at the bottom of all pages (i.e. it replaces the standard
 	"generated by..." message. Default value: none.
 
-header
+head-include::
+	The content of the file specified with this option will be included
+	verbatim in the html HEAD section on all pages. Default value: none.
+
+header::
 	The content of the file specified with this option will be included
 	verbatim at the top of all pages. Default value: none.
 
-include
+include::
 	Name of a configfile to include before the rest of the current config-
 	file is parsed. Default value: none.
 
-index-header
+index-header::
 	The content of the file specified with this option will be included
 	verbatim above the repository index. This setting is deprecated, and
@@ -99,5 +128,5 @@ index-header
 	value: none.
 
-index-info
+index-info::
 	The content of the file specified with this option will be included
 	verbatim below the heading on the repository index page. This setting
@@ -105,39 +134,43 @@ index-info
 	instead). Default value: none.
 
-local-time
+local-time::
 	Flag which, if set to "1", makes cgit print commit and tag times in the
 	servers timezone. Default value: "0".
 
-logo
+logo::
 	Url which specifies the source of an image which will be used as a logo
-	on all cgit pages.
+	on all cgit pages. Default value: "/cgit.png".
 
-logo-link
+logo-link::
 	Url loaded when clicking on the cgit logo image. If unspecified the
 	calculated url of the repository index page will be used. Default
 	value: none.
 
-max-commit-count
+max-commit-count::
 	Specifies the number of entries to list per page in "log" view. Default
 	value: "50".
 
-max-message-length
+max-message-length::
 	Specifies the maximum number of commit message characters to display in
 	"log" view. Default value: "80".
 
-max-repo-count
+max-repo-count::
 	Specifies the number of entries to list per page on the	repository
 	index page. Default value: "50".
 
-max-repodesc-length
+max-repodesc-length::
 	Specifies the maximum number of repo description characters to display
 	on the repository index page. Default value: "80".
 
-max-stats
+max-stats::
 	Set the default maximum statistics period. Valid values are "week",
 	"month", "quarter" and "year". If unspecified, statistics are
 	disabled. Default value: none. See also: "repo.max-stats".
 
-module-link
+mimetype.<ext>::
+	Set the mimetype for the specified filename extension. This is used
+	by the `plain` command when returning blob content.
+
+module-link::
 	Text which will be used as the formatstring for a hyperlink when a
 	submodule is printed in a directory listing. The arguments for the
@@ -145,36 +178,44 @@ module-link
 	value: "./?repo=%s&page=commit&id=%s"
 
-nocache
+nocache::
 	If set to the value "1" caching will be disabled. This settings is
 	deprecated, and will not be honored starting with cgit-1.0. Default
 	value: "0".
 
-renamelimit
+noplainemail::
+	If set to "1" showing full author email adresses will be disabled.
+	Default value: "0".
+
+noheader::
+	Flag which, when set to "1", will make cgit omit the standard header
+	on all pages. Default value: none. See also: "embedded".
+
+renamelimit::
 	Maximum number of files to consider when detecting renames. The value
 	 "-1" uses the compiletime value in git (for further info, look at
 	  `man git-diff`). Default value: "-1".
 
-repo.group
+repo.group::
 	A value for the current repository group, which all repositories
 	specified after this setting will inherit. Default value: none.
 
-robots
+robots::
 	Text used as content for the "robots" meta-tag. Default value:
 	"index, nofollow".
 
-root-desc
+root-desc::
 	Text printed below the heading on the repository index page. Default
 	value: "a fast webinterface for the git dscm".
 
-root-readme:
+root-readme::
 	The content of the file specified with this option will be included
 	verbatim below the "about" link on the repository index page. Default
 	value: none.
 
-root-title
+root-title::
 	Text printed as heading on the repository index page. Default value:
 	"Git Repository Browser".
 
-snapshots
+snapshots::
 	Text which specifies the default (and allowed) set of snapshot formats
 	supported by cgit. The value is a space-separated list of zero or more
@@ -186,17 +227,25 @@ snapshots
 	Default value: none.
 
-summary-branches
+source-filter::
+	Specifies a command which will be invoked to format plaintext blobs
+	in the tree view. The command will get the blob content on its STDIN
+	and the name of the blob as its only command line argument. The STDOUT
+	from the command will be included verbatim as the blob contents, i.e.
+	this can be used to implement e.g. syntax highlighting. Default value:
+	none.
+
+summary-branches::
 	Specifies the number of branches to display in the repository "summary"
 	view. Default value: "10".
 
-summary-log
+summary-log::
 	Specifies the number of log entries to display in the repository
 	"summary" view. Default value: "10".
 
-summary-tags
+summary-tags::
 	Specifies the number of tags to display in the repository "summary"
 	view. Default value: "10".
 
-virtual-root
+virtual-root::
 	Url which, if specified, will be used as root for all cgit links. It
 	will also cause cgit to generate 'virtual urls', i.e. urls like
@@ -208,49 +257,58 @@ virtual-root
 REPOSITORY SETTINGS
 -------------------
-repo.clone-url
+repo.about-filter::
+	Override the default about-filter. Default value: <about-filter>.
+
+repo.clone-url::
 	A list of space-separated urls which can be used to clone this repo.
 	Default value: none.
 
-repo.defbranch
+repo.commit-filter::
+	Override the default commit-filter. Default value: <commit-filter>.
+
+repo.defbranch::
 	The name of the default branch for this repository. If no such branch
 	exists in the repository, the first branch name (when sorted) is used
 	as default instead. Default value: "master".
 
-repo.desc
+repo.desc::
 	The value to show as repository description. Default value: none.
 
-repo.enable-log-filecount
+repo.enable-log-filecount::
 	A flag which can be used to disable the global setting
 	`enable-log-filecount'. Default value: none.
 
-repo.enable-log-linecount
+repo.enable-log-linecount::
 	A flag which can be used to disable the global setting
 	`enable-log-linecount'. Default value: none.
 
-repo.max-stats
+repo.max-stats::
 	Override the default maximum statistics period. Valid values are equal
 	to the values specified for the global "max-stats" setting. Default
 	value: none.
 
-repo.name
+repo.name::
 	The value to show as repository name. Default value: <repo.url>.
 
-repo.owner
+repo.owner::
 	A value used to identify the owner of the repository. Default value:
 	none.
 
-repo.path
+repo.path::
 	An absolute path to the repository directory. For non-bare repositories
 	this is the .git-directory. Default value: none.
 
-repo.readme
+repo.readme::
 	A path (relative to <repo.path>) which specifies a file to include
 	verbatim as the "About" page for this repo. Default value: none.
 
-repo.snapshots
+repo.snapshots::
 	A mask of allowed snapshot-formats for this repo, restricted by the
 	"snapshots" global setting. Default value: <snapshots>.
 
-repo.url
+repo.source-filter::
+	Override the default source-filter. Default value: <source-filter>.
+
+repo.url::
 	The relative url used to access the repository. This must be the first
 	setting specified for each repo. Default value: none.
@@ -260,4 +318,5 @@ EXAMPLE CGITRC FILE
 -------------------
 
+....
 # Enable caching of up to 1000 output entriess
 cache-size=1000
@@ -312,4 +371,17 @@ snapshots=tar.gz tar.bz2 zip
 
 ##
+## List of common mimetypes
+##
+
+mimetype.git=image/git
+mimetype.html=text/html
+mimetype.jpg=image/jpeg
+mimetype.jpeg=image/jpeg
+mimetype.pdf=application/pdf
+mimetype.png=image/png
+mimetype.svg=image/svg+xml
+
+
+##
 ## List of repositories.
 ## PS: Any repositories listed when repo.group is unset will not be
@@ -369,4 +441,5 @@ repo.enable-log-linecount=0
 # Restrict the max statistics period for this repo
 repo.max-stats=month
+....
 
 
diff --git a/cmd.c b/cmd.c
index cf97da7..766f903 100644
--- a/cmd.c
+++ b/cmd.c
@@ -40,5 +40,5 @@ static void about_fn(struct cgit_context *ctx)
 {
 	if (ctx->repo)
-		cgit_print_repo_readme();
+		cgit_print_repo_readme(ctx->qry.path);
 	else
 		cgit_print_site_readme();
diff --git a/filters/commit-links.sh b/filters/commit-links.sh
new file mode 100755
index 0000000..165a533
--- a/dev/null
+++ b/filters/commit-links.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+# This script can be used to generate links in commit messages - the first
+# sed expression generates links to commits referenced by their SHA1, while
+# the second expression generates links to a fictional bugtracker.
+#
+# To use this script, refer to this file with either the commit-filter or the
+# repo.commit-filter options in cgitrc.
+
+sed -re '
+s|\b([0-9a-fA-F]{8,40})\b|<a href="./?id=\1">\1</a>|g
+s| #([0-9]+)\b|<a href="http://bugs.example.com/?bug=\1">#\1</a>|g
+'
diff --git a/filters/syntax-highlighting.sh b/filters/syntax-highlighting.sh
new file mode 100755
index 0000000..999ad0c
--- a/dev/null
+++ b/filters/syntax-highlighting.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+# This script can be used to implement syntax highlighting in the cgit
+# tree-view by refering to this file with the source-filter or repo.source-
+# filter options in cgitrc.
+#
+# Note: the highlight command (http://www.andre-simon.de/) uses css for syntax
+# highlighting, so you'll probably want something like the following included
+# in your css file (generated by highlight 2.4.8 and adapted for cgit):
+#
+# table.blob .num  { color:#2928ff; }
+# table.blob .esc  { color:#ff00ff; }
+# table.blob .str  { color:#ff0000; }
+# table.blob .dstr { color:#818100; }
+# table.blob .slc  { color:#838183; font-style:italic; }
+# table.blob .com  { color:#838183; font-style:italic; }
+# table.blob .dir  { color:#008200; }
+# table.blob .sym  { color:#000000; }
+# table.blob .kwa  { color:#000000; font-weight:bold; }
+# table.blob .kwb  { color:#830000; }
+# table.blob .kwc  { color:#000000; font-weight:bold; }
+# table.blob .kwd  { color:#010181; }
+
+case "$1" in
+	*.c)
+		highlight -f -I -X -S c
+		;;
+	*.h)
+		highlight -f -I -X -S c
+		;;
+	*.sh)
+		highlight -f -I -X -S sh
+		;;
+	*.css)
+		highlight -f -I -X -S css
+		;;
+	*)
+		highlight -f -I -X -S txt
+		;;
+esac
diff --git a/git b/git
-Subproject 5c415311f743ccb11a50f350ff1c385778f049d
+Subproject e276f018f2c1f0fc962fbe44a36708d1cdebada
diff --git a/shared.c b/shared.c
index cce0af4..911a55a 100644
--- a/shared.c
+++ b/shared.c
@@ -63,4 +63,7 @@ struct cgit_repo *cgit_add_repo(const char *url)
 	ret->readme = NULL;
 	ret->mtime = -1;
+	ret->about_filter = ctx.cfg.about_filter;
+	ret->commit_filter = ctx.cfg.commit_filter;
+	ret->source_filter = ctx.cfg.source_filter;
 	return ret;
 }
@@ -356,2 +359,37 @@ int cgit_parse_snapshots_mask(const char *str)
 	return rv;
 }
+
+int cgit_open_filter(struct cgit_filter *filter)
+{
+
+	filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
+		"Unable to duplicate STDOUT");
+	chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess");
+	filter->pid = chk_non_negative(fork(), "Unable to create subprocess");
+	if (filter->pid == 0) {
+		close(filter->pipe_fh[1]);
+		chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO),
+			"Unable to use pipe as STDIN");
+		execvp(filter->cmd, filter->argv);
+		die("Unable to exec subprocess %s: %s (%d)", filter->cmd,
+			strerror(errno), errno);
+	}
+	close(filter->pipe_fh[0]);
+	chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO),
+		"Unable to use pipe as STDOUT");
+	close(filter->pipe_fh[1]);
+	return 0;
+}
+
+int cgit_close_filter(struct cgit_filter *filter)
+{
+	chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO),
+		"Unable to restore STDOUT");
+	close(filter->old_stdout);
+	if (filter->pid < 0)
+		return 0;
+	waitpid(filter->pid, &filter->exitstatus, 0);
+	if (WIFEXITED(filter->exitstatus) && !WEXITSTATUS(filter->exitstatus))
+		return 0;
+	die("Subprocess %s exited abnormally", filter->cmd);
+}
diff --git a/ui-atom.c b/ui-atom.c
index a6ea3ee..808b2d0 100644
--- a/ui-atom.c
+++ b/ui-atom.c
@@ -33,5 +33,5 @@ void add_entry(struct commit *commit, char *host)
 		html("</name>\n");
 	}
-	if (info->author_email) {
+	if (info->author_email && !ctx.cfg.noplainemail) {
 		mail = xstrdup(info->author_email);
 		t = strchr(mail, '<');
@@ -53,5 +53,6 @@ void add_entry(struct commit *commit, char *host)
 	html("</published>\n");
 	if (host) {
-		html("<link rel='alternate' type='text/html' href='http://");
+		html("<link rel='alternate' type='text/html' href='");
+		html(cgit_httpscheme());
 		html_attr(host);
 		html_attr(cgit_pageurl(ctx.repo->url, "commit", NULL));
@@ -114,5 +115,6 @@ void cgit_print_atom(char *tip, char *path, int max_count)
 	html("</subtitle>\n");
 	if (host) {
-		html("<link rel='alternate' type='text/html' href='http://");
+		html("<link rel='alternate' type='text/html' href='");
+		html(cgit_httpscheme());
 		html_attr(host);
 		html_attr(cgit_repourl(ctx.repo->url));
diff --git a/ui-blob.c b/ui-blob.c
index 3cda03d..2ccd31d 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -28,5 +28,5 @@ void cgit_print_blob(const char *hex, char *path, const char *head)
 	unsigned char sha1[20];
 	enum object_type type;
-	unsigned char *buf;
+	char *buf;
 	unsigned long size;
 	struct commit *commit;
@@ -68,4 +68,10 @@ void cgit_print_blob(const char *hex, char *path, const char *head)
 	buf[size] = '\0';
 	ctx.page.mimetype = ctx.qry.mimetype;
+	if (!ctx.page.mimetype) {
+		if (buffer_is_binary(buf, size))
+			ctx.page.mimetype = "application/octet-stream";
+		else
+			ctx.page.mimetype = "text/plain";
+	}
 	ctx.page.filename = path;
 	cgit_print_http_headers(&ctx);
diff --git a/ui-commit.c b/ui-commit.c
index 41ce70e..d6b73ee 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -41,6 +41,8 @@ void cgit_print_commit(char *hex)
 	html("<tr><th>author</th><td>");
 	html_txt(info->author);
-	html(" ");
-	html_txt(info->author_email);
+	if (!ctx.cfg.noplainemail) {
+		html(" ");
+		html_txt(info->author_email);
+	}
 	html("</td><td class='right'>");
 	cgit_print_date(info->author_date, FMT_LONGDATE, ctx.cfg.local_time);
@@ -48,6 +50,8 @@ void cgit_print_commit(char *hex)
 	html("<tr><th>committer</th><td>");
 	html_txt(info->committer);
-	html(" ");
-	html_txt(info->committer_email);
+	if (!ctx.cfg.noplainemail) {
+		html(" ");
+		html_txt(info->committer_email);
+	}
 	html("</td><td class='right'>");
 	cgit_print_date(info->committer_date, FMT_LONGDATE, ctx.cfg.local_time);
@@ -90,9 +94,17 @@ void cgit_print_commit(char *hex)
 	html("</table>\n");
 	html("<div class='commit-subject'>");
+	if (ctx.repo->commit_filter)
+		cgit_open_filter(ctx.repo->commit_filter);
 	html_txt(info->subject);
+	if (ctx.repo->commit_filter)
+		cgit_close_filter(ctx.repo->commit_filter);
 	show_commit_decorations(commit);
 	html("</div>");
 	html("<div class='commit-msg'>");
+	if (ctx.repo->commit_filter)
+		cgit_open_filter(ctx.repo->commit_filter);
 	html_txt(info->msg);
+	if (ctx.repo->commit_filter)
+		cgit_close_filter(ctx.repo->commit_filter);
 	html("</div>");
 	if (parents < 3) {
diff --git a/ui-log.c b/ui-log.c
index ba2ab03..0b37785 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -54,4 +54,8 @@ void show_commit_decorations(struct commit *commit)
 			cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
 		}
+		else if (!prefixcmp(deco->name, "refs/tags/")) {
+			strncpy(buf, deco->name + 10, sizeof(buf) - 1);
+			cgit_tag_link(buf, NULL, "tag-deco", ctx.qry.head, buf);
+		}
 		else if (!prefixcmp(deco->name, "refs/remotes/")) {
 			strncpy(buf, deco->name + 13, sizeof(buf) - 1);
diff --git a/ui-patch.c b/ui-patch.c
index 5d665d3..2a8f7a5 100644
--- a/ui-patch.c
+++ b/ui-patch.c
@@ -109,5 +109,9 @@ void cgit_print_patch(char *hex)
 	cgit_print_http_headers(&ctx);
 	htmlf("From %s Mon Sep 17 00:00:00 2001\n", sha1_to_hex(sha1));
-	htmlf("From: %s %s\n", info->author, info->author_email);
+	htmlf("From: %s", info->author);
+	if (!ctx.cfg.noplainemail) {
+		htmlf(" %s", info->author_email);
+	}
+	html("\n");
 	html("Date: ");
 	cgit_print_date(info->author_date, "%a, %d %b %Y %H:%M:%S %z%n", ctx.cfg.local_time);
diff --git a/ui-plain.c b/ui-plain.c
index 5addd9e..27c6dae 100644
--- a/ui-plain.c
+++ b/ui-plain.c
@@ -18,6 +18,7 @@ static void print_object(const unsigned char *sha1, const char *path)
 {
 	enum object_type type;
-	char *buf;
+	char *buf, *ext;
 	unsigned long size;
+	struct string_list_item *mime;
 
 	type = sha1_object_info(sha1, &size);
@@ -32,7 +33,20 @@ static void print_object(const unsigned char *sha1, const char *path)
 		return;
 	}
-	ctx.page.mimetype = "text/plain";
+	ctx.page.mimetype = NULL;
+	ext = strrchr(path, '.');
+	if (ext && *(++ext)) {
+		mime = string_list_lookup(ext, &ctx.cfg.mimetypes);
+		if (mime)
+			ctx.page.mimetype = (char *)mime->util;
+	}
+	if (!ctx.page.mimetype) {
+		if (buffer_is_binary(buf, size))
+			ctx.page.mimetype = "application/octet-stream";
+		else
+			ctx.page.mimetype = "text/plain";
+	}
 	ctx.page.filename = fmt("%s", path);
 	ctx.page.size = size;
+	ctx.page.etag = sha1_to_hex(sha1);
 	cgit_print_http_headers(&ctx);
 	html_raw(buf, size);
diff --git a/ui-refs.c b/ui-refs.c
index 25da00a..d3b4f6e 100644
--- a/ui-refs.c
+++ b/ui-refs.c
@@ -47,6 +47,17 @@ static int cmp_tag_age(const void *a, const void *b)
 	struct refinfo *r1 = *(struct refinfo **)a;
 	struct refinfo *r2 = *(struct refinfo **)b;
+	int r1date, r2date;
 
-	return cmp_age(r1->tag->tagger_date, r2->tag->tagger_date);
+	if (r1->object->type != OBJ_COMMIT)
+		r1date = r1->tag->tagger_date;
+	else
+		r1date = r1->commit->committer_date;
+
+	if (r2->object->type != OBJ_COMMIT)
+		r2date = r2->tag->tagger_date;
+	else
+		r2date = r2->commit->committer_date;
+
+	return cmp_age(r1date, r2date);
 }
 
@@ -146,4 +157,10 @@ static int print_tag(struct refinfo *ref)
 		else
 			cgit_object_link(ref->object);
+		html("</td><td>");
+		if (ref->object->type == OBJ_COMMIT)
+			html(ref->commit->author);
+		html("</td><td colspan='2'>");
+		if (ref->object->type == OBJ_COMMIT)
+			cgit_print_age(ref->commit->commit->date, -1, NULL);
 		html("</td></tr>\n");
 	}
diff --git a/ui-repolist.c b/ui-repolist.c
index 2c13d50..25f076f 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -274,5 +274,10 @@ void cgit_print_repolist()
 void cgit_print_site_readme()
 {
-	if (ctx.cfg.root_readme)
-		html_include(ctx.cfg.root_readme);
+	if (!ctx.cfg.root_readme)
+		return;
+	if (ctx.cfg.about_filter)
+		cgit_open_filter(ctx.cfg.about_filter);
+	html_include(ctx.cfg.root_readme);
+	if (ctx.cfg.about_filter)
+		cgit_close_filter(ctx.cfg.about_filter);
 }
diff --git a/ui-shared.c b/ui-shared.c
index 40060ba..07d5dd4 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -35,22 +35,21 @@ void cgit_print_error(char *msg)
 }
 
-char *cgit_hosturl()
+char *cgit_httpscheme()
 {
-	char *host, *port;
+	if (ctx.env.https && !strcmp(ctx.env.https, "on"))
+		return "https://";
+	else
+		return "http://";
+}
 
-	host = getenv("HTTP_HOST");
-	if (host) {
-		host = xstrdup(host);
-	} else {
-		host = getenv("SERVER_NAME");
-		if (!host)
-			return NULL;
-		port = getenv("SERVER_PORT");
-		if (port && atoi(port) != 80)
-			host = xstrdup(fmt("%s:%d", host, atoi(port)));
-		else
-			host = xstrdup(host);
-	}
-	return host;
+char *cgit_hosturl()
+{
+	if (ctx.env.http_host)
+		return ctx.env.http_host;
+	if (!ctx.env.server_name)
+		return NULL;
+	if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
+		return ctx.env.server_name;
+	return xstrdup(fmt("%s:%s", ctx.env.server_name, ctx.env.server_port));
 }
 
@@ -457,4 +456,9 @@ void cgit_print_age(time_t t, time_t max_relative, char *format)
 void cgit_print_http_headers(struct cgit_context *ctx)
 {
+	if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
+		return;
+
+	if (ctx->page.status)
+		htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 	if (ctx->page.mimetype && ctx->page.charset)
 		htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
@@ -469,9 +473,19 @@ void cgit_print_http_headers(struct cgit_context *ctx)
 	htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 	htmlf("Expires: %s\n", http_date(ctx->page.expires));
+	if (ctx->page.etag)
+		htmlf("ETag: \"%s\"\n", ctx->page.etag);
 	html("\n");
+	if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
+		exit(0);
 }
 
 void cgit_print_docstart(struct cgit_context *ctx)
 {
+	if (ctx->cfg.embedded) {
+		if (ctx->cfg.header)
+			html_include(ctx->cfg.header);
+		return;
+	}
+
 	char *host = cgit_hosturl();
 	html(cgit_doctype);
@@ -493,10 +507,13 @@ void cgit_print_docstart(struct cgit_context *ctx)
 	}
 	if (host && ctx->repo) {
-		html("<link rel='alternate' title='Atom feed' href='http://");
+		html("<link rel='alternate' title='Atom feed' href='");
+		html(cgit_httpscheme());
 		html_attr(cgit_hosturl());
 		html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.path,
 				       fmt("h=%s", ctx->qry.head)));
-		html("' type='application/atom+xml'/>");
+		html("' type='application/atom+xml'/>\n");
 	}
+	if (ctx->cfg.head_include)
+		html_include(ctx->cfg.head_include);
 	html("</head>\n");
 	html("<body>\n");
@@ -507,5 +524,11 @@ void cgit_print_docstart(struct cgit_context *ctx)
 void cgit_print_docend()
 {
-	html("</div>");
+	html("</div> <!-- class=content -->\n");
+	if (ctx.cfg.embedded) {
+		html("</div> <!-- id=cgit -->\n");
+		if (ctx.cfg.footer)
+			html_include(ctx.cfg.footer);
+		return;
+	}
 	if (ctx.cfg.footer)
 		html_include(ctx.cfg.footer);
@@ -516,4 +539,5 @@ void cgit_print_docend()
 		html("</div>\n");
 	}
+	html("</div> <!-- id=cgit -->\n");
 	html("</body>\n</html>\n");
 }
@@ -603,11 +627,6 @@ char *hc(struct cgit_cmd *cmd, const char *page)
 }
 
-void cgit_print_pageheader(struct cgit_context *ctx)
+static void print_header(struct cgit_context *ctx)
 {
-	struct cgit_cmd *cmd = cgit_get_cmd(ctx);
-
-	if (!cmd && ctx->repo)
-		fallback_cmd = "summary";
-
 	html("<table id='header'>\n");
 	html("<tr>\n");
@@ -653,4 +672,16 @@ void cgit_print_pageheader(struct cgit_context *ctx)
 	}
 	html("</td></tr></table>\n");
+}
+
+void cgit_print_pageheader(struct cgit_context *ctx)
+{
+	struct cgit_cmd *cmd = cgit_get_cmd(ctx);
+
+	if (!cmd && ctx->repo)
+		fallback_cmd = "summary";
+
+	html("<div id='cgit'>");
+	if (!ctx->cfg.noheader)
+		print_header(ctx);
 
 	html("<table class='tabs'><tr><td>\n");
diff --git a/ui-shared.h b/ui-shared.h
index 5a3821f..bff4826 100644
--- a/ui-shared.h
+++ b/ui-shared.h
@@ -2,4 +2,5 @@
 #define UI_SHARED_H
 
+extern char *cgit_httpscheme();
 extern char *cgit_hosturl();
 extern char *cgit_repourl(const char *reponame);
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 5372f5d..4136b3e 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -13,35 +13,14 @@
 static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
 {
-	int rw[2];
-	pid_t gzpid;
-	int stdout2;
-	int status;
 	int rv;
+	struct cgit_filter f;
 
-	stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
-	chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
-	gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
-	if(gzpid==0) {
-		/* child */
-		chk_zero(close(rw[1]), "Closing write end of pipe in child");
-		chk_zero(close(STDIN_FILENO), "Closing STDIN");
-		chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
-		execlp(filter,filter,NULL);
-		_exit(-1);
-	}
-	/* parent */
-	chk_zero(close(rw[0]), "Closing read end of pipe");
-	chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
-
+	f.cmd = xstrdup(filter);
+	f.argv = malloc(2 * sizeof(char *));
+	f.argv[0] = f.cmd;
+	f.argv[1] = NULL;
+	cgit_open_filter(&f);
 	rv = write_tar_archive(args);
-
-	chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
-	chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
-	chk_zero(close(stdout2), "Closing uncompressed STDOUT");
-	chk_zero(close(rw[1]), "Closing write end of pipe in parent");
-	chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
-	if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
-		cgit_print_error("Failed to compress archive");
-
+	cgit_close_filter(&f);
 	return rv;
 }
diff --git a/ui-summary.c b/ui-summary.c
index ede4a62..a2c018e 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -67,10 +67,26 @@ void cgit_print_summary()
 }
 
-void cgit_print_repo_readme()
+void cgit_print_repo_readme(char *path)
 {
-	if (ctx.repo->readme) {
-		html("<div id='summary'>");
-		html_include(ctx.repo->readme);
-		html("</div>");
-	}
+	char *slash, *tmp;
+
+	if (!ctx.repo->readme)
+		return;
+
+	if (path) {
+		slash = strrchr(ctx.repo->readme, '/');
+		if (!slash)
+			return;
+		tmp = xmalloc(slash - ctx.repo->readme + 1 + strlen(path) + 1);
+		strncpy(tmp, ctx.repo->readme, slash - ctx.repo->readme + 1);
+		strcpy(tmp + (slash - ctx.repo->readme + 1), path);
+	} else
+		tmp = ctx.repo->readme;
+	html("<div id='summary'>");
+	if (ctx.repo->about_filter)
+		cgit_open_filter(ctx.repo->about_filter);
+	html_include(tmp);
+	if (ctx.repo->about_filter)
+		cgit_close_filter(ctx.repo->about_filter);
+	html("</div>");
 }
diff --git a/ui-summary.h b/ui-summary.h
index 3e13039..c01f560 100644
--- a/ui-summary.h
+++ b/ui-summary.h
@@ -3,5 +3,5 @@
 
 extern void cgit_print_summary();
-extern void cgit_print_repo_readme();
+extern void cgit_print_repo_readme(char *path);
 
 #endif /* UI_SUMMARY_H */
diff --git a/ui-tag.c b/ui-tag.c
index 8c263ab..c2d72af 100644
--- a/ui-tag.c
+++ b/ui-tag.c
@@ -68,5 +68,5 @@ void cgit_print_tag(char *revname)
 			html("<tr><td>Tagged by</td><td>");
 			html_txt(info->tagger);
-			if (info->tagger_email) {
+			if (info->tagger_email && !ctx.cfg.noplainemail) {
 				html(" ");
 				html_txt(info->tagger_email);
diff --git a/ui-tree.c b/ui-tree.c
index 553dbaa..c608754 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -16,5 +16,5 @@ char *match_path;
 int header = 0;
 
-static void print_text_buffer(char *buf, unsigned long size)
+static void print_text_buffer(const char *name, char *buf, unsigned long size)
 {
 	unsigned long lineno, idx;
@@ -23,4 +23,14 @@ static void print_text_buffer(char *buf, unsigned long size)
 
 	html("<table summary='blob content' class='blob'>\n");
+	if (ctx.repo->source_filter) {
+		html("<tr><td class='lines'><pre><code>");
+		ctx.repo->source_filter->argv[1] = xstrdup(name);
+		cgit_open_filter(ctx.repo->source_filter);
+		write(STDOUT_FILENO, buf, size);
+		cgit_close_filter(ctx.repo->source_filter);
+		html("</code></pre></td></tr></table>\n");
+		return;
+	}
+
 	html("<tr><td class='linenumbers'><pre>");
 	idx = 0;
@@ -66,5 +76,5 @@ static void print_binary_buffer(char *buf, unsigned long size)
 }
 
-static void print_object(const unsigned char *sha1, char *path)
+static void print_object(const unsigned char *sha1, char *path, const char *basename)
 {
 	enum object_type type;
@@ -94,5 +104,5 @@ static void print_object(const unsigned char *sha1, char *path)
 		print_binary_buffer(buf, size);
 	else
-		print_text_buffer(buf, size);
+		print_text_buffer(basename, buf, size);
 }
 
@@ -104,4 +114,5 @@ static int ls_item(const unsigned char *sha1, const char *base, int baselen,
 	char *name;
 	char *fullpath;
+	char *class;
 	enum object_type type;
 	unsigned long size = 0;
@@ -136,5 +147,10 @@ static int ls_item(const unsigned char *sha1, const char *base, int baselen,
 			       curr_rev, fullpath);
 	} else {
-		cgit_tree_link(name, NULL, "ls-blob", ctx.qry.head,
+		class = strrchr(name, '.');
+		if (class != NULL) {
+			class = fmt("ls-blob %s", class + 1);
+		} else
+			class = "ls-blob";
+		cgit_tree_link(name, NULL, class, ctx.qry.head,
 			       curr_rev, fullpath);
 	}
@@ -214,5 +230,5 @@ static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 			return READ_TREE_RECURSIVE;
 		} else {
-			print_object(sha1, buffer);
+			print_object(sha1, buffer, pathname);
 			return 0;
 		}