GITWEB.CONF(5)



GITWEB.CONF(5)                    Git Manual                    GITWEB.CONF(5)

NAME
       gitweb.conf - Gitweb (Git web interface) configuration file

SYNOPSIS
       /etc/gitweb.conf, /etc/gitweb-common.conf,
       $GITWEBDIR/gitweb_config.perl

DESCRIPTION
       The gitweb CGI script for viewing Git repositories over the web uses a
       perl script fragment as its configuration file. You can set variables
       using "our $variable = value"; text from a "#" character until the end
       of a line is ignored. See perlsyn(1) for details.

       An example:

           # gitweb configuration file for http://git.example.org
           #
           our $projectroot = "/srv/git"; # FHS recommendation
           our $site_name = 'Example.org >> Repos';

       The configuration file is used to override the default settings that
       were built into gitweb at the time the gitweb.cgi script was generated.

       While one could just alter the configuration settings in the gitweb CGI
       itself, those changes would be lost upon upgrade. Configuration
       settings might also be placed into a file in the same directory as the
       CGI script with the default name gitweb_config.perl -- allowing one to
       have multiple gitweb instances with different configurations by the use
       of symlinks.

       Note that some configuration can be controlled on per-repository rather
       than gitweb-wide basis: see "Per-repository gitweb configuration"
       subsection on gitweb(1) manpage.

DISCUSSION
       Gitweb reads configuration data from the following sources in the
       following order:

       o   built-in values (some set during build stage),

       o   common system-wide configuration file (defaults to
           /etc/gitweb-common.conf),

       o   either per-instance configuration file (defaults to
           gitweb_config.perl in the same directory as the installed gitweb),
           or if it does not exists then fallback system-wide configuration
           file (defaults to /etc/gitweb.conf).

       Values obtained in later configuration files override values obtained
       earlier in the above sequence.

       Locations of the common system-wide configuration file, the fallback
       system-wide configuration file and the per-instance configuration file
       are defined at compile time using build-time Makefile configuration
       variables, respectively GITWEB_CONFIG_COMMON, GITWEB_CONFIG_SYSTEM and
       GITWEB_CONFIG.

       You can also override locations of gitweb configuration files during
       runtime by setting the following environment variables:
       GITWEB_CONFIG_COMMON, GITWEB_CONFIG_SYSTEM and GITWEB_CONFIG to a
       non-empty value.

       The syntax of the configuration files is that of Perl, since these
       files are handled by sourcing them as fragments of Perl code (the
       language that gitweb itself is written in). Variables are typically set
       using the our qualifier (as in "our $variable = <value>;") to avoid
       syntax errors if a new version of gitweb no longer uses a variable and
       therefore stops declaring it.

       You can include other configuration file using read_config_file()
       subroutine. For example, one might want to put gitweb configuration
       related to access control for viewing repositories via Gitolite (one of
       Git repository management tools) in a separate file, e.g. in
       /etc/gitweb-gitolite.conf. To include it, put

           read_config_file("/etc/gitweb-gitolite.conf");

       somewhere in gitweb configuration file used, e.g. in per-installation
       gitweb configuration file. Note that read_config_file() checks itself
       that the file it reads exists, and does nothing if it is not found. It
       also handles errors in included file.

       The default configuration with no configuration file at all may work
       perfectly well for some installations. Still, a configuration file is
       useful for customizing or tweaking the behavior of gitweb in many ways,
       and some optional features will not be present unless explicitly
       enabled using the configurable %features variable (see also
       "Configuring gitweb features" section below).

CONFIGURATION VARIABLES
       Some configuration variables have their default values (embedded in the
       CGI script) set during building gitweb -- if that is the case, this
       fact is put in their description. See gitweb's INSTALL file for
       instructions on building and installing gitweb.

   Location of repositories
       The configuration variables described below control how gitweb finds
       Git repositories, and how repositories are displayed and accessed.

       See also "Repositories" and later subsections in gitweb(1) manpage.

       $projectroot
           Absolute filesystem path which will be prepended to project path;
           the path to repository is $projectroot/$project. Set to
           $GITWEB_PROJECTROOT during installation. This variable has to be
           set correctly for gitweb to find repositories.

           For example, if $projectroot is set to "/srv/git" by putting the
           following in gitweb config file:

               our $projectroot = "/srv/git";

           then

               http://git.example.com/gitweb.cgi?p=foo/bar.git

           and its path_info based equivalent

               http://git.example.com/gitweb.cgi/foo/bar.git

           will map to the path /srv/git/foo/bar.git on the filesystem.

       $projects_list
           Name of a plain text file listing projects, or a name of directory
           to be scanned for projects.

           Project list files should list one project per line, with each line
           having the following format

               <URI-encoded filesystem path to repository> SP <URI-encoded repository owner>

           The default value of this variable is determined by the GITWEB_LIST
           makefile variable at installation time. If this variable is empty,
           gitweb will fall back to scanning the $projectroot directory for
           repositories.

       $project_maxdepth
           If $projects_list variable is unset, gitweb will recursively scan
           filesystem for Git repositories. The $project_maxdepth is used to
           limit traversing depth, relative to $projectroot (starting point);
           it means that directories which are further from $projectroot than
           $project_maxdepth will be skipped.

           It is purely performance optimization, originally intended for
           MacOS X, where recursive directory traversal is slow. Gitweb
           follows symbolic links, but it detects cycles, ignoring any
           duplicate files and directories.

           The default value of this variable is determined by the build-time
           configuration variable GITWEB_PROJECT_MAXDEPTH, which defaults to
           2007.

       $export_ok
           Show repository only if this file exists (in repository). Only
           effective if this variable evaluates to true. Can be set when
           building gitweb by setting GITWEB_EXPORT_OK. This path is relative
           to GIT_DIR. git-daemon[1] uses git-daemon-export-ok, unless started
           with --export-all. By default this variable is not set, which means
           that this feature is turned off.

       $export_auth_hook
           Function used to determine which repositories should be shown. This
           subroutine should take one parameter, the full path to a project,
           and if it returns true, that project will be included in the
           projects list and can be accessed through gitweb as long as it
           fulfills the other requirements described by $export_ok,
           $projects_list, and $projects_maxdepth. Example:

               our $export_auth_hook = sub { return -e "$_[0]/git-daemon-export-ok"; };

           though the above might be done by using $export_ok instead

               our $export_ok = "git-daemon-export-ok";

           If not set (default), it means that this feature is disabled.

           See also more involved example in "Controlling access to Git
           repositories" subsection on gitweb(1) manpage.

       $strict_export
           Only allow viewing of repositories also shown on the overview page.
           This for example makes $export_ok file decide if repository is
           available and not only if it is shown. If $projects_list points to
           file with list of project, only those repositories listed would be
           available for gitweb. Can be set during building gitweb via
           GITWEB_STRICT_EXPORT. By default this variable is not set, which
           means that you can directly access those repositories that are
           hidden from projects list page (e.g. the are not listed in the
           $projects_list file).

   Finding files
       The following configuration variables tell gitweb where to find files.
       The values of these variables are paths on the filesystem.

       $GIT
           Core git executable to use. By default set to $GIT_BINDIR/git,
           which in turn is by default set to $(bindir)/git. If you use Git
           installed from a binary package, you should usually set this to
           "/usr/bin/git". This can just be "git" if your web server has a
           sensible PATH; from security point of view it is better to use
           absolute path to git binary. If you have multiple Git versions
           installed it can be used to choose which one to use. Must be
           (correctly) set for gitweb to be able to work.

       $mimetypes_file
           File to use for (filename extension based) guessing of MIME types
           before trying /etc/mime.types.  NOTE that this path, if relative,
           is taken as relative to the current Git repository, not to CGI
           script. If unset, only /etc/mime.types is used (if present on
           filesystem). If no mimetypes file is found, mimetype guessing based
           on extension of file is disabled. Unset by default.

       $highlight_bin
           Path to the highlight executable to use (it must be the one from
           http://www.andre-simon.de due to assumptions about parameters and
           output). By default set to highlight; set it to full path to
           highlight executable if it is not installed on your web server's
           PATH. Note that highlight feature must be set for gitweb to
           actually use syntax highlighting.

           NOTE: for a file to be highlighted, its syntax type must be
           detected and that syntax must be supported by "highlight". The
           default syntax detection is minimal, and there are many supported
           syntax types with no detection by default. There are three options
           for adding syntax detection. The first and second priority are
           %highlight_basename and %highlight_ext, which detect based on
           basename (the full filename, for example "Makefile") and extension
           (for example "sh"). The keys of these hashes are the basename and
           extension, respectively, and the value for a given key is the name
           of the syntax to be passed via --syntax <syntax> to "highlight".
           The last priority is the "highlight" configuration of Shebang
           regular expressions to detect the language based on the first line
           in the file, (for example, matching the line "#!/bin/bash"). See
           the highlight documentation and the default config at
           /etc/highlight/filetypes.conf for more details.

           For example if repositories you are hosting use "phtml" extension
           for PHP files, and you want to have correct syntax-highlighting for
           those files, you can add the following to gitweb configuration:

               our %highlight_ext;
               $highlight_ext{'phtml'} = 'php';

   Links and their targets
       The configuration variables described below configure some of gitweb
       links: their target and their look (text or image), and where to find
       page prerequisites (stylesheet, favicon, images, scripts). Usually they
       are left at their default values, with the possible exception of
       @stylesheets variable.

       @stylesheets
           List of URIs of stylesheets (relative to the base URI of a page).
           You might specify more than one stylesheet, for example to use
           "gitweb.css" as base with site specific modifications in a separate
           stylesheet to make it easier to upgrade gitweb. For example, you
           can add a site stylesheet by putting

               push @stylesheets, "gitweb-site.css";

           in the gitweb config file. Those values that are relative paths are
           relative to base URI of gitweb.

           This list should contain the URI of gitweb's standard stylesheet.
           The default URI of gitweb stylesheet can be set at build time using
           the GITWEB_CSS makefile variable. Its default value is
           static/gitweb.css (or static/gitweb.min.css if the CSSMIN variable
           is defined, i.e. if CSS minifier is used during build).

           Note: there is also a legacy $stylesheet configuration variable,
           which was used by older gitweb. If $stylesheet variable is defined,
           only CSS stylesheet given by this variable is used by gitweb.

       $logo
           Points to the location where you put git-logo.png on your web
           server, or to be more the generic URI of logo, 72x27 size). This
           image is displayed in the top right corner of each gitweb page and
           used as a logo for the Atom feed. Relative to the base URI of
           gitweb (as a path). Can be adjusted when building gitweb using
           GITWEB_LOGO variable By default set to static/git-logo.png.

       $favicon
           Points to the location where you put git-favicon.png on your web
           server, or to be more the generic URI of favicon, which will be
           served as "image/png" type. Web browsers that support favicons
           (website icons) may display them in the browser's URL bar and next
           to the site name in bookmarks. Relative to the base URI of gitweb.
           Can be adjusted at build time using GITWEB_FAVICON variable. By
           default set to static/git-favicon.png.

       $javascript
           Points to the location where you put gitweb.js on your web server,
           or to be more generic the URI of JavaScript code used by gitweb.
           Relative to the base URI of gitweb. Can be set at build time using
           the GITWEB_JS build-time configuration variable.

           The default value is either static/gitweb.js, or
           static/gitweb.min.js if the JSMIN build variable was defined, i.e.
           if JavaScript minifier was used at build time.  Note that this
           single file is generated from multiple individual JavaScript
           "modules".

       $home_link
           Target of the home link on the top of all pages (the first part of
           view "breadcrumbs"). By default it is set to the absolute URI of a
           current page (to the value of $my_uri variable, or to "/" if
           $my_uri is undefined or is an empty string).

       $home_link_str
           Label for the "home link" at the top of all pages, leading to
           $home_link (usually the main gitweb page, which contains the
           projects list). It is used as the first component of gitweb's
           "breadcrumb trail": <home link> / <project> / <action>. Can be set
           at build time using the GITWEB_HOME_LINK_STR variable. By default
           it is set to "projects", as this link leads to the list of
           projects. Another popular choice is to set it to the name of site.
           Note that it is treated as raw HTML so it should not be set from
           untrusted sources.

       @extra_breadcrumbs
           Additional links to be added to the start of the breadcrumb trail
           before the home link, to pages that are logically "above" the
           gitweb projects list, such as the organization and department which
           host the gitweb server. Each element of the list is a reference to
           an array, in which element 0 is the link text (equivalent to
           $home_link_str) and element 1 is the target URL (equivalent to
           $home_link).

           For example, the following setting produces a breadcrumb trail like
           "home / dev / projects / ..." where "projects" is the home link.

                   our @extra_breadcrumbs = (
                     [ 'home' => 'https://www.example.org/' ],
                     [ 'dev'  => 'https://dev.example.org/' ],
                   );

       $logo_url, $logo_label
           URI and label (title) for the Git logo link (or your site logo, if
           you chose to use different logo image). By default, these both
           refer to Git homepage, https://git-scm.com; in the past, they
           pointed to Git documentation at https://www.kernel.org.

   Changing gitweb's look
       You can adjust how pages generated by gitweb look using the variables
       described below. You can change the site name, add common headers and
       footers for all pages, and add a description of this gitweb
       installation on its main page (which is the projects list page), etc.

       $site_name
           Name of your site or organization, to appear in page titles. Set it
           to something descriptive for clearer bookmarks etc. If this
           variable is not set or is, then gitweb uses the value of the
           SERVER_NAME CGI environment variable, setting site name to
           "$SERVER_NAME Git", or "Untitled Git" if this variable is not set
           (e.g. if running gitweb as standalone script).

           Can be set using the GITWEB_SITENAME at build time. Unset by
           default.

       $site_html_head_string
           HTML snippet to be included in the <head> section of each page. Can
           be set using GITWEB_SITE_HTML_HEAD_STRING at build time. No default
           value.

       $site_header
           Name of a file with HTML to be included at the top of each page.
           Relative to the directory containing the gitweb.cgi script. Can be
           set using GITWEB_SITE_HEADER at build time. No default value.

       $site_footer
           Name of a file with HTML to be included at the bottom of each page.
           Relative to the directory containing the gitweb.cgi script. Can be
           set using GITWEB_SITE_FOOTER at build time. No default value.

       $home_text
           Name of a HTML file which, if it exists, is included on the gitweb
           projects overview page ("projects_list" view). Relative to the
           directory containing the gitweb.cgi script. Default value can be
           adjusted during build time using GITWEB_HOMETEXT variable. By
           default set to indextext.html.

       $projects_list_description_width
           The width (in characters) of the "Description" column of the
           projects list. Longer descriptions will be truncated (trying to cut
           at word boundary); the full description is available in the title
           attribute (usually shown on mouseover). The default is 25, which
           might be too small if you use long project descriptions.

       $default_projects_order
           Default value of ordering of projects on projects list page, which
           means the ordering used if you don't explicitly sort projects list
           (if there is no "o" CGI query parameter in the URL). Valid values
           are "none" (unsorted), "project" (projects are by project name,
           i.e. path to repository relative to $projectroot), "descr" (project
           description), "owner", and "age" (by date of most current commit).

           Default value is "project". Unknown value means unsorted.

   Changing gitweb's behavior
       These configuration variables control internal gitweb behavior.

       $default_blob_plain_mimetype
           Default mimetype for the blob_plain (raw) view, if mimetype
           checking doesn't result in some other type; by default
           "text/plain". Gitweb guesses mimetype of a file to display based on
           extension of its filename, using $mimetypes_file (if set and file
           exists) and /etc/mime.types files (see mime.types(5) manpage; only
           filename extension rules are supported by gitweb).

       $default_text_plain_charset
           Default charset for text files. If this is not set, the web server
           configuration will be used. Unset by default.

       $fallback_encoding
           Gitweb assumes this charset when a line contains non-UTF-8
           characters. The fallback decoding is used without error checking,
           so it can be even "utf-8". The value must be a valid encoding; see
           the Encoding::Supported(3pm) man page for a list. The default is
           "latin1", aka. "iso-8859-1".

       @diff_opts
           Rename detection options for git-diff and git-diff-tree. The
           default is ('-M'); set it to ('-C') or ('-C', '-C') to also detect
           copies, or set it to () i.e. empty list if you don't want to have
           renames detection.

           Note that rename and especially copy detection can be quite
           CPU-intensive. Note also that non Git tools can have problems with
           patches generated with options mentioned above, especially when
           they involve file copies ('-C') or criss-cross renames ('-B').

   Some optional features and policies
       Most of features are configured via %feature hash; however some of
       extra gitweb features can be turned on and configured using variables
       described below. This list beside configuration variables that control
       how gitweb looks does contain variables configuring administrative side
       of gitweb (e.g. cross-site scripting prevention; admittedly this as
       side effect affects how "summary" pages look like, or load limiting).

       @git_base_url_list
           List of Git base URLs. These URLs are used to generate URLs
           describing from where to fetch a project, which are shown on
           project summary page. The full fetch URL is
           "$git_base_url/$project", for each element of this list. You can
           set up multiple base URLs (for example one for git:// protocol, and
           one for http:// protocol).

           Note that per repository configuration can be set in
           $GIT_DIR/cloneurl file, or as values of multi-value gitweb.url
           configuration variable in project config. Per-repository
           configuration takes precedence over value composed from
           @git_base_url_list elements and project name.

           You can setup one single value (single entry/item in this list) at
           build time by setting the GITWEB_BASE_URL build-time configuration
           variable. By default it is set to (), i.e. an empty list. This
           means that gitweb would not try to create project URL (to fetch)
           from project name.

       $projects_list_group_categories
           Whether to enable the grouping of projects by category on the
           project list page. The category of a project is determined by the
           $GIT_DIR/category file or the gitweb.category variable in each
           repository's configuration. Disabled by default (set to 0).

       $project_list_default_category
           Default category for projects for which none is specified. If this
           is set to the empty string, such projects will remain uncategorized
           and listed at the top, above categorized projects. Used only if
           project categories are enabled, which means if
           $projects_list_group_categories is true. By default set to ""
           (empty string).

       $prevent_xss
           If true, some gitweb features are disabled to prevent content in
           repositories from launching cross-site scripting (XSS) attacks. Set
           this to true if you don't trust the content of your repositories.
           False by default (set to 0).

       $maxload
           Used to set the maximum load that we will still respond to gitweb
           queries. If the server load exceeds this value then gitweb will
           return "503 Service Unavailable" error. The server load is taken to
           be 0 if gitweb cannot determine its value. Currently it works only
           on Linux, where it uses /proc/loadavg; the load there is the number
           of active tasks on the system -- processes that are actually
           running -- averaged over the last minute.

           Set $maxload to undefined value (undef) to turn this feature off.
           The default value is 300.

       $omit_age_column
           If true, omit the column with date of the most current commit on
           the projects list page. It can save a bit of I/O and a fork per
           repository.

       $omit_owner
           If true prevents displaying information about repository owner.

       $per_request_config
           If this is set to code reference, it will be run once for each
           request. You can set parts of configuration that change per session
           this way. For example, one might use the following code in a gitweb
           configuration file

               our $per_request_config = sub {
                       $ENV{GL_USER} = $cgi->remote_user || "gitweb";
               };

           If $per_request_config is not a code reference, it is interpreted
           as boolean value. If it is true gitweb will process config files
           once per request, and if it is false gitweb will process config
           files only once, each time it is executed. True by default (set to
           1).

           NOTE: $my_url, $my_uri, and $base_url are overwritten with their
           default values before every request, so if you want to change them,
           be sure to set this variable to true or a code reference effecting
           the desired changes.

           This variable matters only when using persistent web environments
           that serve multiple requests using single gitweb instance, like
           mod_perl, FastCGI or Plackup.

   Other variables
       Usually you should not need to change (adjust) any of configuration
       variables described below; they should be automatically set by gitweb
       to correct value.

       $version
           Gitweb version, set automatically when creating gitweb.cgi from
           gitweb.perl. You might want to modify it if you are running
           modified gitweb, for example

               our $version .= " with caching";

           if you run modified version of gitweb with caching support. This
           variable is purely informational, used e.g. in the "generator" meta
           header in HTML header.

       $my_url, $my_uri
           Full URL and absolute URL of the gitweb script; in earlier versions
           of gitweb you might have need to set those variables, but now there
           should be no need to do it. See $per_request_config if you need to
           set them still.

       $base_url
           Base URL for relative URLs in pages generated by gitweb, (e.g.
           $logo, $favicon, @stylesheets if they are relative URLs), needed
           and used <base href="$base_url"> only for URLs with nonempty
           PATH_INFO. Usually gitweb sets its value correctly, and there is no
           need to set this variable, e.g. to $my_uri or "/". See
           $per_request_config if you need to override it anyway.

CONFIGURING GITWEB FEATURES
       Many gitweb features can be enabled (or disabled) and configured using
       the %feature hash. Names of gitweb features are keys of this hash.

       Each %feature hash element is a hash reference and has the following
       structure:

           "<feature_name>" => {
                   "sub" => <feature-sub (subroutine)>,
                   "override" => <allow-override (boolean)>,
                   "default" => [ <options>... ]
           },

       Some features cannot be overridden per project. For those features the
       structure of appropriate %feature hash element has a simpler form:

           "<feature_name>" => {
                   "override" => 0,
                   "default" => [ <options>... ]
           },

       As one can see it lacks the 'sub' element.

       The meaning of each part of feature configuration is described below:

       default
           List (array reference) of feature parameters (if there are any),
           used also to toggle (enable or disable) given feature.

           Note that it is currently always an array reference, even if
           feature doesn't accept any configuration parameters, and 'default'
           is used only to turn it on or off. In such case you turn feature on
           by setting this element to [1], and torn it off by setting it to
           [0]. See also the passage about the "blame" feature in the
           "Examples" section.

           To disable features that accept parameters (are configurable), you
           need to set this element to empty list i.e.  [].

       override
           If this field has a true value then the given feature is
           overridable, which means that it can be configured (or
           enabled/disabled) on a per-repository basis.

           Usually given "<feature>" is configurable via the gitweb.<feature>
           config variable in the per-repository Git configuration file.

           Note that no feature is overridable by default.

       sub
           Internal detail of implementation. What is important is that if
           this field is not present then per-repository override for given
           feature is not supported.

           You wouldn't need to ever change it in gitweb config file.

   Features in %feature
       The gitweb features that are configurable via %feature hash are listed
       below. This should be a complete list, but ultimately the authoritative
       and complete list is in gitweb.cgi source code, with features described
       in the comments.

       blame
           Enable the "blame" and "blame_incremental" blob views, showing for
           each line the last commit that modified it; see git-blame(1). This
           can be very CPU-intensive and is therefore disabled by default.

           This feature can be configured on a per-repository basis via
           repository's gitweb.blame configuration variable (boolean).

       snapshot
           Enable and configure the "snapshot" action, which allows user to
           download a compressed archive of any tree or commit, as produced by
           git-archive(1) and possibly additionally compressed. This can
           potentially generate high traffic if you have large project.

           The value of 'default' is a list of names of snapshot formats,
           defined in %known_snapshot_formats hash, that you wish to offer.
           Supported formats include "tgz", "tbz2", "txz" (gzip/bzip2/xz
           compressed tar archive) and "zip"; please consult gitweb sources
           for a definitive list. By default only "tgz" is offered.

           This feature can be configured on a per-repository basis via
           repository's gitweb.snapshot configuration variable, which contains
           a comma separated list of formats or "none" to disable snapshots.
           Unknown values are ignored.

       grep
           Enable grep search, which lists the files in currently selected
           tree (directory) containing the given string; see git-grep(1). This
           can be potentially CPU-intensive, of course. Enabled by default.

           This feature can be configured on a per-repository basis via
           repository's gitweb.grep configuration variable (boolean).

       pickaxe
           Enable the so called pickaxe search, which will list the commits
           that introduced or removed a given string in a file. This can be
           practical and quite faster alternative to "blame" action, but it is
           still potentially CPU-intensive. Enabled by default.

           The pickaxe search is described in git-log(1) (the description of
           -S<string> option, which refers to pickaxe entry in gitdiffcore(7)
           for more details).

           This feature can be configured on a per-repository basis by setting
           repository's gitweb.pickaxe configuration variable (boolean).

       show-sizes
           Enable showing size of blobs (ordinary files) in a "tree" view, in
           a separate column, similar to what ls -l does; see description of
           -l option in git-ls-tree(1) manpage. This costs a bit of I/O.
           Enabled by default.

           This feature can be configured on a per-repository basis via
           repository's gitweb.showSizes configuration variable (boolean).

       patches
           Enable and configure "patches" view, which displays list of commits
           in email (plain text) output format; see also git-format-patch(1).
           The value is the maximum number of patches in a patchset generated
           in "patches" view. Set the default field to a list containing
           single item of or to an empty list to disable patch view, or to a
           list containing a single negative number to remove any limit.
           Default value is 16.

           This feature can be configured on a per-repository basis via
           repository's gitweb.patches configuration variable (integer).

       avatar
           Avatar support. When this feature is enabled, views such as
           "shortlog" or "commit" will display an avatar associated with the
           email of each committer and author.

           Currently available providers are "gravatar" and "picon". Only one
           provider at a time can be selected (default is one element list).
           If an unknown provider is specified, the feature is disabled.  Note
           that some providers might require extra Perl packages to be
           installed; see gitweb/INSTALL for more details.

           This feature can be configured on a per-repository basis via
           repository's gitweb.avatar configuration variable.

           See also %avatar_size with pixel sizes for icons and avatars
           ("default" is used for one-line like "log" and "shortlog", "double"
           is used for two-line like "commit", "commitdiff" or "tag"). If the
           default font sizes or lineheights are changed (e.g. via adding
           extra CSS stylesheet in @stylesheets), it may be appropriate to
           change these values.

       highlight
           Server-side syntax highlight support in "blob" view. It requires
           $highlight_bin program to be available (see the description of this
           variable in the "Configuration variables" section above), and
           therefore is disabled by default.

           This feature can be configured on a per-repository basis via
           repository's gitweb.highlight configuration variable (boolean).

       remote_heads
           Enable displaying remote heads (remote-tracking branches) in the
           "heads" list. In most cases the list of remote-tracking branches is
           an unnecessary internal private detail, and this feature is
           therefore disabled by default.  git-instaweb(1), which is usually
           used to browse local repositories, enables and uses this feature.

           This feature can be configured on a per-repository basis via
           repository's gitweb.remote_heads configuration variable (boolean).

       The remaining features cannot be overridden on a per project basis.

       search
           Enable text search, which will list the commits which match author,
           committer or commit text to a given string; see the description of
           --author, --committer and --grep options in git-log(1) manpage.
           Enabled by default.

           Project specific override is not supported.

       forks
           If this feature is enabled, gitweb considers projects in
           subdirectories of project root (basename) to be forks of existing
           projects. For each project $projname.git, projects in the
           $projname/ directory and its subdirectories will not be shown in
           the main projects list. Instead, a '+' mark is shown next to
           $projname, which links to a "forks" view that lists all the forks
           (all projects in $projname/ subdirectory). Additionally a "forks"
           view for a project is linked from project summary page.

           If the project list is taken from a file ($projects_list points to
           a file), forks are only recognized if they are listed after the
           main project in that file.

           Project specific override is not supported.

       actions
           Insert custom links to the action bar of all project pages. This
           allows you to link to third-party scripts integrating into gitweb.

           The "default" value consists of a list of triplets in the form
           '("<label>", "<link>", "<position>")` where "position" is the label
           after which to insert the link, "link" is a format string where %n
           expands to the project name, %f to the project path within the
           filesystem (i.e. "$projectroot/$project"), %h to the current hash
           ('h' gitweb parameter) and '%b` to the current hash base ('hb'
           gitweb parameter); '%%` expands to '%'.

           For example, at the time this page was written, the
           http://repo.or.cz Git hosting site set it to the following to
           enable graphical log (using the third party tool git-browser):

               $feature{'actions'}{'default'} =
                       [ ('graphiclog', '/git-browser/by-commit.html?r=%n', 'summary')];

           This adds a link titled "graphiclog" after the "summary" link,
           leading to git-browser script, passing r=<project> as a query
           parameter.

           Project specific override is not supported.

       timed
           Enable displaying how much time and how many Git commands it took
           to generate and display each page in the page footer (at the bottom
           of page). For example the footer might contain: "This page took
           6.53325 seconds and 13 Git commands to generate." Disabled by
           default.

           Project specific override is not supported.

       javascript-timezone
           Enable and configure the ability to change a common time zone for
           dates in gitweb output via JavaScript. Dates in gitweb output
           include authordate and committerdate in "commit", "commitdiff" and
           "log" views, and taggerdate in "tag" view. Enabled by default.

           The value is a list of three values: a default time zone (for if
           the client hasn't selected some other time zone and saved it in a
           cookie), a name of cookie where to store selected time zone, and a
           CSS class used to mark up dates for manipulation. If you want to
           turn this feature off, set "default" to empty list: [].

           Typical gitweb config files will only change starting (default)
           time zone, and leave other elements at their default values:

               $feature{'javascript-timezone'}{'default'}[0] = "utc";

           The example configuration presented here is guaranteed to be
           backwards and forward compatible.

           Time zone values can be "local" (for local time zone that browser
           uses), "utc" (what gitweb uses when JavaScript or this feature is
           disabled), or numerical time zones in the form of "+/-HHMM", such
           as "+0200".

           Project specific override is not supported.

       extra-branch-refs
           List of additional directories under "refs" which are going to be
           used as branch refs. For example if you have a gerrit setup where
           all branches under refs/heads/ are official, push-after-review ones
           and branches under refs/sandbox/, refs/wip and refs/other are user
           ones where permissions are much wider, then you might want to set
           this variable as follows:

               $feature{'extra-branch-refs'}{'default'} =
                       ['sandbox', 'wip', 'other'];

           This feature can be configured on per-repository basis after
           setting $feature{extra-branch-refs}{override} to true, via
           repository's gitweb.extraBranchRefs configuration variable, which
           contains a space separated list of refs. An example:

               [gitweb]
                       extraBranchRefs = sandbox wip other

           The gitweb.extraBranchRefs is actually a multi-valued configuration
           variable, so following example is also correct and the result is
           the same as of the snippet above:

               [gitweb]
                       extraBranchRefs = sandbox
                       extraBranchRefs = wip other

           It is an error to specify a ref that does not pass "git
           check-ref-format" scrutiny. Duplicated values are filtered.

EXAMPLES
       To enable blame, pickaxe search, and snapshot support (allowing
       "tar.gz" and "zip" snapshots), while allowing individual projects to
       turn them off, put the following in your GITWEB_CONFIG file:

           $feature{'blame'}{'default'} = [1];
           $feature{'blame'}{'override'} = 1;

           $feature{'pickaxe'}{'default'} = [1];
           $feature{'pickaxe'}{'override'} = 1;

           $feature{'snapshot'}{'default'} = ['zip', 'tgz'];
           $feature{'snapshot'}{'override'} = 1;

       If you allow overriding for the snapshot feature, you can specify which
       snapshot formats are globally disabled. You can also add any
       command-line options you want (such as setting the compression level).
       For instance, you can disable Zip compressed snapshots and set gzip(1)
       to run at level 6 by adding the following lines to your gitweb
       configuration file:

           $known_snapshot_formats{'zip'}{'disabled'} = 1;
           $known_snapshot_formats{'tgz'}{'compressor'} = ['gzip','-6'];

BUGS
       Debugging would be easier if the fallback configuration file
       (/etc/gitweb.conf) and environment variable to override its location
       (GITWEB_CONFIG_SYSTEM) had names reflecting their "fallback" role. The
       current names are kept to avoid breaking working setups.

ENVIRONMENT
       The location of per-instance and system-wide configuration files can be
       overridden using the following environment variables:

       GITWEB_CONFIG
           Sets location of per-instance configuration file.

       GITWEB_CONFIG_SYSTEM
           Sets location of fallback system-wide configuration file. This file
           is read only if per-instance one does not exist.

       GITWEB_CONFIG_COMMON
           Sets location of common system-wide configuration file.

FILES
       gitweb_config.perl
           This is default name of per-instance configuration file. The format
           of this file is described above.

       /etc/gitweb.conf
           This is default name of fallback system-wide configuration file.
           This file is used only if per-instance configuration variable is
           not found.

       /etc/gitweb-common.conf
           This is default name of common system-wide configuration file.

SEE ALSO
       gitweb(1), git-instaweb(1)

       gitweb/README, gitweb/INSTALL

GIT
       Part of the git(1) suite

Git 2.27.0                        06/01/2020                    GITWEB.CONF(5)

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