The Trac Configuration File

Trac is configured through the trac.ini file, located in the <projectenv>/conf directory. The trac.ini configuration file and its parent directory should be writable by the web server.

Trac monitors the timestamp of the file to trigger an environment reload when the timestamp changes. Most changes to the configuration will be reflected immediately, though changes to the [components] or [logging] sections will require restarting the web server. You may also need to restart the web server after creating a global configuration file when none was previously present.

Global Configuration

Configuration can be shared among environments using one or more global configuration files. Options in the global configuration will be merged with the environment-specific options, with local options overriding global options. The global configuration file is specified as follows:

[inherit]
file = /path/to/global/trac.ini

Multiple files can be specified using a comma-separated list. Non-absolute paths are relative to the Environment conf directory.

Note that you can also specify a global option file when creating a new project, by adding the option --inherit=/path/to/global/trac.ini to trac-admin's initenv command. If you specify --inherit but nevertheless intend to use a global option file with your new environment, you will have to go through the newly generated conf/trac.ini file and delete the entries that will otherwise override those in the global file.

There are three more options in the [inherit] section, templates_dir for sharing global templates, htdocs_dir for sharing global htdocs and plugins_dir, for sharing plugins. Those options can be specified in the shared configuration file, and in fact, configuration files can even be chained if you specify another [inherit] file there.

Note that the templates found in the templates/ directory of the Trac Environment have precedence over those found in [inherit] templates_dir. In turn, the latter have precedence over the installed templates, so be careful about what you put there. Notably, if you override a default template, refresh your modifications when you upgrade to a new version of Trac. The preferred way to perform Trac Interface Customization is to write a custom plugin doing an appropriate ITemplateStreamFilter transformation.

Reference for settings

This is a reference of available configuration options, and their default settings.

Documentation improvements should be discussed on the ​trac-dev mailing list or described in a ​ticket. Even better, ​submit a patch against the docstrings in the code.

[attachment]

max_size	Maximum allowed file size (in bytes) for attachments.	262144
max_zip_size	Maximum allowed total size (in bytes) for an attachment list to be downloadable as a .zip. Set this to -1 to disable download as .zip. (since 1.0)	2097152
render_unsafe_content	Whether attachments should be rendered in the browser, or only made downloadable. Pretty much any file may be interpreted as HTML by the browser, which allows a malicious user to attach a file containing cross-site scripting attacks. For public sites where anonymous users can create attachments it is recommended to leave this option disabled.	disabled

[browser]

color_scale	Enable colorization of the age column. This uses the same color scale as the source code annotation: blue is older, red is newer.	enabled
downloadable_paths	List of repository paths that can be downloaded. Leave this option empty if you want to disable all downloads, otherwise set it to a comma-separated list of authorized paths (those paths are glob patterns, i.e. "*" can be used as a wild card). In a multi-repository environment, the path must be qualified with the repository name if the path does not point to the default repository (e.g. /reponame/trunk). Note that a simple prefix matching is performed on the paths, so aliases won't get automatically resolved.	/trunk,/branches/*,/tags/*
hide_properties	Comma-separated list of version control properties to hide from the repository browser.	svk:merge
intermediate_color	(r,g,b) color triple to use for the color corresponding to the intermediate color, if two linear interpolations are used for the color scale (see intermediate_point). If not set, the intermediate color between oldest_color and newest_color will be used.	(no default)
intermediate_point	If set to a value between 0 and 1 (exclusive), this will be the point chosen to set the intermediate_color for interpolating the color value.	(no default)
newest_color	(r,g,b) color triple to use for the color corresponding to the newest color, for the color scale used in blame or the browser age column if color_scale is enabled.	(255, 136, 136)
oldest_color	(r,g,b) color triple to use for the color corresponding to the oldest color, for the color scale used in blame or the browser age column if color_scale is enabled.	(136, 136, 255)
oneliner_properties	Comma-separated list of version control properties to render as oneliner wiki content in the repository browser.	trac:summary
render_unsafe_content	Whether raw files should be rendered in the browser, or only made downloadable. Pretty much any file may be interpreted as HTML by the browser, which allows a malicious user to create a file containing cross-site scripting attacks. For open repositories where anyone can check-in a file, it is recommended to leave this option disabled.	disabled
wiki_properties	Comma-separated list of version control properties to render as wiki content in the repository browser.	trac:description

[changeset]

max_diff_bytes	Maximum total size in bytes of the modified files (their old size plus their new size) for which the changeset view will attempt to show the diffs inlined.	10000000
max_diff_files	Maximum number of modified files for which the changeset view will attempt to show the diffs inlined.	0
wiki_format_messages	Whether wiki formatting should be applied to changeset messages. If this option is disabled, changeset messages will be rendered as pre-formatted text.	enabled

[components]

This section is used to enable or disable components provided by plugins, as well as by Trac itself. The component to enable/disable is specified via the name of the option. Whether its enabled is determined by the option value; setting the value to enabled or on will enable the component, any other value (typically disabled or off) will disable the component.

The option name is either the fully qualified name of the components or the module/package prefix of the component. The former enables/disables a specific component, while the latter enables/disables any component in the specified package/module.

Consider the following configuration snippet:

[components]
trac.ticket.report.ReportModule = disabled
acct_mgr.* = enabled

The first option tells Trac to disable the report module. The second option instructs Trac to enable all components in the acct_mgr package. Note that the trailing wildcard is required for module/package matching.

To view the list of active components, go to the Plugins page on About Trac (requires CONFIG_VIEW permissions).

See also: Trac Plugins

[downloads]

additional_tags	Additional tags that will be created for submitted downloads. Possible values are: author, component, version, architecture, platform, type.	author,component,version,architecture,platform,type
architecture_sort	Column by which architectures list will be sorted. Possible values are: id, name, description.	name
architecture_sort_direction	Direction of architectures list sorting. Possible values are: asc, desc.	asc
consoleadmin_user	User who's permissions will be used to upload download. He/she should have TAGS_MODIFY permissions.	anonymous
download_sort	Column by which downloads list will be sorted. Possible values are: id, file, description, size, time, count, author, tags, component, version, architecture, platform, type.	time
download_sort_direction	Direction of downloads list sorting. Possible values are: asc, desc.	desc
ext	List of file extensions allowed to upload. Set to 'all' to specify that any file extensions is allowed.	zip,gz,bz2,rar
max_size	Maximum allowed file size (in bytes) for downloads. Default is 256 MB.	268697600
path	Path where to store uploaded downloads.	../downloads
platform_sort	Column by which platforms list will be sorted. Possible values are: id, name, description.	name
platform_sort_direction	Direction of platforms list sorting. Possible values are: asc, desc.	asc
type_sort	Column by which types list will be sorted. Possible values are: id, name, description.	name
type_sort_direction	Direction of types list sorting. Possible values are: asc, desc.	asc
unique_filename	If enabled checks if uploaded file has unique name.	disabled
visible_fields	List of downloads table fields that should be visible to users on Downloads section.	id,file,description,size,time,count,author,tags,component,version,architecture,platform,type

[fullblog]

all_rss_icons	Controls whether or not to display rss icons more than once	disabled
archive_rss_icon	Controls whether or not to display the rss icon	enabled
default_postname	Option for a default naming scheme for new posts. The string can include substitution markers for time (UTC) and user: %Y=year, %m=month, %d=day, %H=hour, %M=minute, %S=second, $USER. Example template string: %Y/%m/%d/my_topic	(no default)
month_names	Ability to specify a list of month names for display in groupings. If empty it will make a list from default locale setting. Enter list of 12 months like: month_names = January, February, ..., December	(no default)
num_items_front	Option to specify how many recent posts to display on the front page of the Blog (and RSS feeds).	20
personal_blog	When using the Blog as a personal blog (only one author), setting to 'True' will disable the display of 'Browse by author:' in sidebar, and also removes various author links and references.	disabled

[header_logo]

alt	Alternative text for the header logo.	(please configure the [header_logo] section in trac.ini)
height	Height of the header logo image in pixels.	-1
link	URL to link to, from the header logo.	(no default)
src	URL of the image to use as header logo. It can be absolute, server relative or relative. If relative, it is relative to one of the /chrome locations: site/your-logo.png if your-logo.png is located in the htdocs folder within your Trac Environment; common/your-logo.png if your-logo.png is located in the folder mapped to the htdocs_location URL. Only specifying your-logo.png is equivalent to the latter.	site/your_project_logo.png
width	Width of the header logo image in pixels.	-1

[http-headers]

Headers to be added to the HTTP request. (since 1.2.3)

The header name must conform to RFC7230 and the following reserved names are not allowed: content-type, content-length, location, etag, pragma, cache-control, expires.

[inherit]

htdocs_dir	Path to the shared htdocs directory. Static resources in that directory are mapped to /chrome/shared under the environment URL, in addition to common and site locations. This can be useful in site.html for common interface customization of multiple Trac environments. Non-absolute paths are relative to the Environment conf directory. (since 1.0)	(no default)
plugins_dir	Path to the shared plugins directory. Plugins in that directory are loaded in addition to those in the directory of the environment plugins, with this one taking precedence. Non-absolute paths are relative to the Environment conf directory.	(no default)
templates_dir	Path to the shared templates directory. Templates in that directory are loaded in addition to those in the environments templates directory, but the latter take precedence. Non-absolute paths are relative to the Environment conf directory.	(no default)

[intertrac]

This section configures Inter Trac prefixes. Option names in this section that contain a . are of the format <name>.<attribute>. Option names that don't contain a . define an alias.

The .url attribute is mandatory and is used for locating the other Trac. This can be a relative path when the other Trac environment is located on the same server.

The .title attribute is used for generating a tooltip when the cursor is hovered over an Inter Trac link.

Example configuration:

[intertrac]
# -- Example of setting up an alias:
t = trac

# -- Link to an external Trac:
genshi.title = Edgewall's Trac for Genshi
genshi.url = https://genshi.edgewall.org

[interwiki]

Every option in the [interwiki] section defines one Inter Wiki prefix. The option name defines the prefix. The option value defines the URL, optionally followed by a description separated from the URL by whitespace. Parametric URLs are supported as well.

Example:

[interwiki]
MeatBall = http://www.usemod.com/cgi-bin/mb.pl?
PEP = http://www.python.org/peps/pep-$1.html Python Enhancement Proposal $1
tsvn = tsvn: Interact with TortoiseSvn

[logging]

log_file	If log_type is file, this should be a path to the log-file. Relative paths are resolved relative to the log directory of the environment.	trac.log
log_format	Custom logging format. If nothing is set, the following will be used: Trac[$(module)s] $(levelname)s: $(message)s In addition to regular key names supported by the ​Python logger library one could use: $(path)s the path for the current environment $(basename)s the last path component of the current environment $(project)s the project name Note the usage of $(...)s instead of %(...)s as the latter form would be interpreted by the ConfigParser itself. Example: ($(thread)d) Trac[$(basename)s:$(module)s] $(levelname)s: $(message)s	(no default)
log_level	Level of verbosity in log. Should be one of (CRITICAL, ERROR, WARNING, INFO, DEBUG).	INFO
log_type	Logging facility to use. Should be one of (none, file, stderr, syslog, winlog).	file

[mainnav]

Configures the main navigation bar, which by default contains Wiki, Timeline, Roadmap, Browse Source, View Tickets, New Ticket, Search and Admin.

The label, href, and order attributes can be specified. Entries can be disabled by setting the value of the navigation item to disabled.

The following example renames the link to Wiki Start to Home, links the View Tickets entry to a specific report and disables the Search entry.

[mainnav]
wiki.label = Home
tickets.href = /report/24
search = disabled

See Trac Navigation for more details.

[markdown]

tab_length

Specify the length of tabs in the markdown source. This affects the display of multiple paragraphs in list items, including sub-lists, blockquotes, code blocks, etc.

4

[metanav]

Configures the meta navigation entries, which by default are Login, Logout, Preferences, Help/Guide and About Trac. The allowed attributes are the same as for [mainnav]. Additionally, a special entry is supported - logout.redirect is the page the user sees after hitting the logout button. For example:

[metanav]
logout.redirect = wiki/Logout

See Trac Navigation for more details.

[mimeviewer]

max_preview_size	Maximum file size for HTML preview.	262144
mime_map	List of additional MIME types and keyword mappings. Mappings are comma-separated, and for each MIME type, there's a colon (":") separated list of associated keywords or file extensions.	text/x-dylan:dylan,text/x-idl:ice,text/x-ada:ads:adb
mime_map_patterns	List of additional MIME types associated to filename patterns. Mappings are comma-separated, and each mapping consists of a MIME type and a Python regexp used for matching filenames, separated by a colon (":"). (since 1.0)	text/plain:README(?!\.rst)|INSTALL(?!\.rst)|COPYING.*
pygments_default_style	The default style to use for Pygments syntax highlighting.	trac
pygments_modes	List of additional MIME types known by Pygments. For each, a tuple mimetype:mode:quality has to be specified, where mimetype is the MIME type, mode is the corresponding Pygments mode to be used for the conversion and quality is the quality ratio associated to this conversion. That can also be used to override the default quality ratio used by the Pygments render.	(no default)
tab_width	Displayed tab width in file preview.	8
treat_as_binary	Comma-separated list of MIME types that should be treated as binary data.	application/octet-stream,application/pdf,application/postscript,application/msword,application/rtf

[notification]

admit_domains	Comma-separated list of domains that should be considered as valid for email addresses (such as localdomain).	(no default)
default_format.email	Default format to distribute email notifications.	text/plain
email_address_resolvers	Comma separated list of email resolver components in the order they will be called. If an email address is resolved, the remaining resolvers will not be called.	SessionEmailResolver
email_sender	Name of the component implementing IEmailSender. This component is used by the notification system to send emails. Trac currently provides SmtpEmailSender for connecting to an SMTP server, and SendmailEmailSender for running a sendmail-compatible executable.	SmtpEmailSender
ignore_domains	Comma-separated list of domains that should not be considered part of email addresses (for usernames with Kerberos domains).	(no default)
message_id_hash	Hash algorithm to create unique Message-ID header. (since 1.0.13)	md5
mime_encoding	Specifies the MIME encoding scheme for emails. Supported values are: none, the default value which uses 7-bit encoding if the text is plain ASCII or 8-bit otherwise. base64, which works with any kind of content but may cause some issues with touchy anti-spam/anti-virus engine. qp or quoted-printable, which works best for european languages (more compact than base64) if 8-bit encoding cannot be used.	none
sendmail_path	Path to the sendmail executable. The sendmail program must accept the -i and -f options.	sendmail
smtp_always_bcc	Comma-separated list of email addresses to always send notifications to. Addresses are not public (Bcc:).	(no default)
smtp_always_cc	Comma-separated list of email addresses to always send notifications to. Addresses can be seen by all recipients (Cc:).	(no default)
smtp_default_domain	Default host/domain to append to addresses that do not specify one. Fully qualified addresses are not modified. The default domain is appended to all username/login for which an email address cannot be found in the user settings.	(no default)
smtp_enabled	Enable email notification.	disabled
smtp_from	Sender address to use in notification emails. At least one of smtp_from and smtp_replyto must be set, otherwise Trac refuses to send notification mails.	trac@localhost
smtp_from_author	Use the author of the change as the sender in notification emails (e.g. reporter of a new ticket, author of a comment). If the author hasn't set an email address, smtp_from and smtp_from_name are used instead. (since 1.0)	disabled
smtp_from_name	Sender name to use in notification emails.	(no default)
smtp_password	Password for authenticating with SMTP server.	(no default)
smtp_port	SMTP server port to use for email notification.	25
smtp_replyto	Reply-To address to use in notification emails. At least one of smtp_from and smtp_replyto must be set, otherwise Trac refuses to send notification mails.	trac@localhost
smtp_server	SMTP server hostname to use for email notifications.	localhost
smtp_subject_prefix	Text to prepend to subject line of notification emails. If the setting is not defined, then [$project_name] is used as the prefix. If no prefix is desired, then specifying an empty option will disable it.	__default__
smtp_user	Username for authenticating with SMTP server.	(no default)
use_public_cc	Addresses in the To and Cc fields are visible to all recipients. If this option is disabled, recipients are put in the Bcc list.	disabled
use_short_addr	Permit email address without a host/domain (i.e. username only). The SMTP server should accept those addresses, and either append a FQDN or use local delivery. See also smtp_default_domain. Do not use this option with a public SMTP server.	disabled
use_tls	Use SSL/TLS to send notifications over SMTP.	disabled

[notification-subscriber]

The notifications subscriptions are controlled by plugins. All INotificationSubscriber components are in charge. These components may allow to be configured via this section in the trac.ini file.

See Trac Notification for more details.

Available subscribers:

Subscriber	Description
AlwaysEmailSubscriber

[project]

admin	E-Mail address of the project's administrator.	(no default)
admin_trac_url	Base URL of a Trac instance where errors in this Trac should be reported. This can be an absolute or relative URL, or '.' to reference this Trac instance. An empty value will disable the reporting buttons.	.
descr	Short description of the project.	My example project
footer	Page footer text (right-aligned).	Visit the Trac open source project at<br /><a href="https://trac.edgewall.org/">https://trac.edgewall.org/</a>
icon	URL of the icon of the project.	common/trac.ico
name	Name of the project.	My Project
url	URL of the main project web site, usually the website in which the base_url resides. This is used in notification e-mails.	(no default)

[pygments-lexer]

Configure Pygments ​lexer options.

For example, to set the ​PhpLexer options startinline and funcnamehighlighting:

[pygments-lexer]
php.startinline = True
php.funcnamehighlighting = True

The lexer name is derived from the class name, with Lexer stripped from the end. The lexer short names can also be used in place of the lexer name.

[repositories]

One of the methods for registering repositories is to populate the [repositories] section of trac.ini.

This is especially suited for setting up aliases, using a shared configuration, or specifying repositories at the time of environment creation.

See TracRepositoryAdmin for details on the format of this section, and look elsewhere on the page for information on other repository providers.

[revisionlog]

default_log_limit	Default value for the limit argument in the Trac Revision Log.	100
graph_colors	Comma-separated list of colors to use for the Trac Revision Log graph display. (since 1.0)	#cc0,#0c0,#0cc,#00c,#c0c,#c00

[sqlite]

extensions

Paths to ​sqlite extensions. The paths may be absolute or relative to the Trac environment.

(no default)

[svn]

authz_file	The path to the Subversion ​authorization (authz) file. To enable authz permission checking, the AuthzSourcePolicy permission policy must be added to [trac] permission_policies. Non-absolute paths are relative to the Environment conf directory.	(no default)
authz_module_name	The module prefix used in the authz_file for the default repository. If left empty, the global section is used.	(no default)

[tags]

cloud_caseless_sort	Whether the tag cloud should be sorted case-sensitive.	disabled
cloud_mincount	Integer threshold to hide tags with smaller count.	1
complete_field	Ticket field to which a drop-down tag list should be attached.	keywords
complete_matchcontains	Include partial matches in suggestion list. Default is true.	enabled
complete_sticky_tags	A list of comma separated values available for input.	(no default)
default_format	Set the default format for the handler of the /tags domain. bulleted-list of "linked-id description (tags)" oldlist (default value) The original format with a compact bulleted-list of "linked-description" table table… (see corresponding column option)	oldlist
default_table_cols	Select columns and order for table format using a "|"-separated list of column names. Supported columns: realm, id, description, tags	id|description|tags
exclude_realms	Comma-separated list of realms to exclude from tags queries by default, unless specifically included using "realm:realm-name" in a query.	(no default)
ignore_closed_tickets	Do not collect tags from closed tickets.	enabled
listtagged_default_format	Set default format for the handler of the /tags domain. See ListTagged description (Wiki Macros) for supported values.	oldlist
listtagged_default_table_cols	Select columns and column order for table format. See ListTagged description (Wiki Macros) for supported values.	id|description|tags
listtagged_exclude_realms	Comma-separated list of realms to exclude from tags queries by default, unless specifically included using 'realm:<realm>' in a query.	(no default)
listtagged_items_per_page	Number of tagged resources displayed per page of tag query results requested by ListTagged macros and from /tags.	100
query_exclude_wiki_templates	Whether tagged wiki page templates should be queried.	enabled
revisable_realms	Comma-separated list of realms requiring tag change history.	wiki
separator	Character(s) to use as separators between tags. Default is a single whitespace.
ticket_fields	List of ticket fields to expose as tags.	keywords
ticket_help	If specified, 'keywords' label on ticket view will be turned into a link to this URL.	(no default)
ticket_help_newwindow	If true and keywords_help specified, wiki page will open in a new window. Default is false.	disabled
wiki_page_link	Link a tag to the wiki page with same name, if it exists.	enabled
wiki_page_prefix	Prefix for tag wiki page names.	(no default)

[timeline]

abbreviated_messages	Whether wiki-formatted event messages should be truncated or not. This only affects the default rendering, and can be overriden by specific event providers, see their own documentation.	enabled
changeset_collapse_events	Whether consecutive changesets from the same author having exactly the same message should be presented as one event. That event will link to the range of changesets in the log view.	disabled
changeset_long_messages	Whether wiki-formatted changeset messages should be multiline or not. If this option is not specified or is false and wiki_format_messages is set to true, changeset messages will be single line only, losing some formatting (bullet points, etc).	disabled
changeset_show_files	Number of files to show (-1 for unlimited, 0 to disable). This can also be location, for showing the common prefix for the changed files.	0
default_daysback	Default number of days displayed in the Timeline, in days.	30
max_daysback	Maximum number of days (-1 for unlimited) displayable in the Timeline.	90

[trac]

anonymous_session_lifetime	Lifetime of the anonymous session, in days. Set the option to 0 to disable purging old anonymous sessions. (since 1.0.17)	90
auth_cookie_domain	Auth cookie domain attribute. The auth cookie can be shared among multiple subdomains by setting the value to the domain. (since 1.2)	(no default)
auth_cookie_lifetime	Lifetime of the authentication cookie, in seconds. This value determines how long the browser will cache authentication information, and therefore, after how much inactivity a user will have to log in again. The value of 0 makes the cookie expire at the end of the browsing session.	0
auth_cookie_path	Path for the authentication cookie. Set this to the common base path of several Trac instances if you want them to share the cookie.	(no default)
auto_preview_timeout	Inactivity timeout in seconds after which the automatic wiki preview triggers an update. This option can contain floating-point values. The lower the setting, the more requests will be made to the server. Set this to 0 to disable automatic preview.	2.0
auto_reload	Automatically reload template files after modification.	disabled
backup_dir	Database backup location	db
base_url	Reference URL for the Trac deployment. This is the base URL that will be used when producing documents that will be used outside of the web browsing context, like for example when inserting URLs pointing to Trac resources in notification e-mails.	(no default)
check_auth_ip	Whether the IP address of the user should be checked for authentication.	disabled
database	Database connection string for this project	sqlite:db/trac.db
debug_sql	Show the SQL queries in the Trac log, at DEBUG level.	disabled
default_charset	Charset to be used when in doubt.	utf-8
default_date_format	The date format. Valid options are 'iso8601' for selecting ISO 8601 format, or leave it empty which means the default date format will be inferred from the browser's default language. (since 1.0)	(no default)
default_dateinfo_format	The date information format. Valid options are 'relative' for displaying relative format and 'absolute' for displaying absolute format. (since 1.0)	relative
default_handler	Name of the component that handles requests to the base URL. Options include TimelineModule, RoadmapModule, BrowserModule, QueryModule, ReportModule, TicketModule and WikiModule. The session preference for default handler take precedence, when set.	WikiModule
default_language	The preferred language to use if no user preference has been set.	(no default)
default_timezone	The default timezone to use	(no default)
genshi_cache_size	The maximum number of templates that the template loader will cache in memory. You may want to choose a higher value if your site uses a larger number of templates, and you have enough memory to spare, or you can reduce it if you are short on memory. (deprecated, will be removed in Trac 1.5.1)	128
htdocs_location	Base URL for serving the core static resources below /chrome/common/. It can be left empty, and Trac will simply serve those resources itself. Advanced users can use this together with trac-admin ... deploy <deploydir> to allow serving the static resources for Trac directly from the web server. Note however that this only applies to the <deploydir>/htdocs/common directory, the other deployed resources (i.e. those from plugins) will not be made available this way and additional rewrite rules will be needed in the web server.	(no default)
ignore_auth_case	Whether login names should be converted to lower case.	disabled
jquery_location	Location of the jQuery JavaScript library (version 1.12.4). An empty value loads jQuery from the copy bundled with Trac. Alternatively, jQuery could be loaded from a CDN, for example: ​http://code.jquery.com/jquery-1.12.4.min.js, ​http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.12.4.min.js or ​https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js. (since 1.0)	(no default)
jquery_ui_location	Location of the jQuery UI JavaScript library (version 1.12.1). An empty value loads jQuery UI from the copy bundled with Trac. Alternatively, jQuery UI could be loaded from a CDN, for example: ​https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js or ​http://ajax.aspnetcdn.com/ajax/jquery.ui/1.12.1/jquery-ui.min.js. (since 1.0)	(no default)
jquery_ui_theme_location	Location of the theme to be used with the jQuery UI JavaScript library (version 1.12.1). An empty value loads the custom Trac jQuery UI theme from the copy bundled with Trac. Alternatively, a jQuery UI theme could be loaded from a CDN, for example: ​https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/start/jquery-ui.css or ​http://ajax.aspnetcdn.com/ajax/jquery.ui/1.12.1/themes/start/jquery-ui.css. (since 1.0)	(no default)
never_obfuscate_mailto	Never obfuscate mailto: links explicitly written in the wiki, even if show_email_addresses is false or the user doesn't have EMAIL_VIEW permission.	disabled
permission_policies	List of components implementing IPermissionPolicy, in the order in which they will be applied. These components manage fine-grained access control to Trac resources.	DefaultWikiPolicy,DefaultTicketPolicy,DefaultPermissionPolicy,LegacyAttachmentPolicy
permission_store	Name of the component implementing IPermissionStore, which is used for managing user and group permissions.	DefaultPermissionStore
request_filters	Ordered list of filters to apply to all requests.	(no default)
resizable_textareas	Make <textarea> fields resizable. Requires JavaScript.	enabled
secure_cookies	Restrict cookies to HTTPS connections. When true, set the secure flag on all cookies so that they are only sent to the server on HTTPS connections. Use this if your Trac instance is only accessible through HTTPS.	disabled
show_email_addresses	Show email addresses instead of usernames. If false, email addresses are obfuscated for users that don't have EMAIL_VIEW permission.	disabled
show_full_names	Show full names instead of usernames. (since 1.2)	enabled
timeout	Timeout value for database connection, in seconds. Use '0' to specify no timeout.	20
use_base_url_for_redirect	Optionally use [trac] base_url for redirects. In some configurations, usually involving running Trac behind a HTTP proxy, Trac can't automatically reconstruct the URL that is used to access it. You may need to use this option to force Trac to use the base_url setting also for redirects. This introduces the obvious limitation that this environment will only be usable when accessible from that URL, as redirects are frequently used.	disabled
use_chunked_encoding	If enabled, send contents as chunked encoding in HTTP/1.1. Otherwise, send contents with Content-Length header after entire of the contents are rendered. (since 1.0.6)	enabled
use_xsendfile	When true, send a X-Sendfile header and no content when sending files from the filesystem, so that the web server handles the content. This requires a web server that knows how to handle such a header, like Apache with mod_xsendfile or lighttpd. (since 1.0)	disabled
wiki_toolbars	Add a simple toolbar on top of Wiki <textarea>s. (since 1.0.2)	enabled
xsendfile_header	The header to use if use_xsendfile is enabled. If Nginx is used, set X-Accel-Redirect. (since 1.0.6)	X-Sendfile

[tractab]

names	List of labels to use for tabs in mainnav	(no default)
perms	List of permissions required to view tabs	(no default)
urls	List of urls that the tabs display	(no default)

[versioncontrol]

allowed_repository_dir_prefixes	Comma-separated list of allowed prefixes for repository directories when adding and editing repositories in the repository admin panel. If the list is empty, all repository directories are allowed.	(no default)
default_repository_type	Default repository connector type. This is used as the default repository type for repositories defined in the repositories section or using the "Repositories" admin panel.	svn

[wiki]

default_edit_area_height	Default height of the textarea on the wiki edit page. (Since 1.1.5)	20
ignore_missing_pages	Enable/disable highlighting Camel Case links to missing pages.	disabled
max_size	Maximum allowed wiki page size in characters.	262144
render_unsafe_content	Enable/disable the use of unsafe HTML tags such as <script> or <embed> with the HTML WikiProcessor. For public sites where anonymous users can edit the wiki it is recommended to leave this option disabled.	disabled
safe_origins	List of URIs considered "safe cross-origin", that will be rendered as img element without crossorigin="anonymous" attribute or used in url() of inline style attribute even if [wiki] render_unsafe_content is false (since 1.0.15). To make any origins safe, specify "*" in the list.	data:
safe_schemes	List of URI schemes considered "safe", that will be rendered as external links even if [wiki] render_unsafe_content is false.	cvs,file,ftp,git,irc,http,https,news,sftp,smb,ssh,svn,svn+ssh
split_page_names	Enable/disable splitting the Wiki Page Names with space characters.	disabled

[wikiextras]

done_phrases	Analogous to FIXME-phrases, but presentation is less eye-catching.	DONE,DEBUGGED,FIXED,REVIEWED
fixme_phrases	A list of attentional phrases or single words, separated by comma (,) that will be highlighted to catch attention. Any delimiter ():<> adjacent to a phrase will not be presented. (i.e. do not include any of these delimiters in this list). This makes it possible to naturally write, for example, FIXME: in a wiki text, but view the phrase highlighted without the colon (:) which would not look natural. Use the ShowPhrases macro to show a list of currently defined phrases.	BUG,FIXME
icon_limit	To prevent exhaustive network traffic, limit the maximum number of icons generated by the macro Icon. Set to 0 for unlimited number of icons (this will produce exhaustive network traffic—you have been warned!)	32
lbox_width	Width of left aligned boxes (defaults to rbox_width).	300
rbox_width	Width of right aligned boxes.	300
shadowless_boxes	Use shadowless boxes.	disabled
shadowless_icons	Use shadowless icons.	disabled
showicons_limit	To prevent exhaustive network traffic, limit the maximum number of icons generated by the macro ShowIcons. Set to 0 for unlimited number of icons (this will produce exhaustive network traffic—you have been warned!)	96
todo_phrases	Analogous to FIXME-phrases, but presentation is less eye-catching.	REVIEW,TODO
wide_toc	Right aligned boxes with table of contents, produced by the PageOutline macro, are either as wide as ordinary right aligned boxes (true) or narrow (false).	disabled

[wikiextras-custom-phrases]

Custom phrases are configurable by providing associations between a CSS class and the list of phrases separated by comma.

Example:

[wikiextras-custom-phrases]
nice = NICE, COOL

[wikiextras-smileys]

The set of smileys is configurable by providing associations between icon names and wiki keywords. A default set of icons and keywords is defined, which can be revoked one-by-one (_remove) or all at once (_remove_defaults).

Example:

[wikiextras-smileys]
_remove_defaults = true
_remove = :-( :(
smiley = :-) :)
smiley-wink = ;-) ;)
clock = (CLOCK) (TIME)
calendar-month = (CALENDAR) (DATE)
chart = (CHART)
document-excel = (EXCEL)
document-word = (WORD)
eye = (EYE)
new = (NEW)
tick = (TICK)

Keywords are space-separated!

A smiley can also be removed by associating its icon with nothing:

smiley =

Use the ShowSmileys macro to find out the current set of icons and keywords.

_remove	Space-separated(!) list of keywords that shall not be interpreted as smileys (even if defined in this section).	(no default)
_remove_defaults	Set to true to remove all default smileys.	disabled

[wikiextras-symbols]

The set of symbols is configurable by providing associations between symbols and wiki keywords. A default set of symbols and keywords is defined, which can be revoked one-by-one (_remove) or all at once (_remove_defaults).

Example:

[wikiextras-symbols]
_remove_defaults = true
_remove = <- ->
&laquo; = <<
&raquo; = >>
&sum; = (SUM)
&hearts; = <3

Keywords are space-separated!

A symbol can also be removed by associating it with no keyword:

← =

Use the ShowSymbols macro to find out the current set of symbols and keywords.

_remove	Space-separated(!) list of keywords that shall not be interpreted as symbols (even if defined in this section).	(no default)
_remove_defaults	Set to true to remove all default symbols.	disabled

Configure Error Reporting

The error reporting page has a Create button for reporting issues. The site to which issues are reported depends on the configuration of the Trac site and the user’s permissions.

If the user doesn’t possess TRAC_ADMIN, the site to which a user is directed to create a ticket is determined by the [trac] admin_trac_url setting:

• If empty, there will be no Create button.
• If set to the default value (.), the ticket will be created on the site which the error occurred.
• Otherwise the ticket will be created at the site pointed to by admin_trac_url.

If [project] admin is not empty, the administrator's email address will be rendered on the error page.

If the user possesses TRAC_ADMIN, the Create button will direct the user to report the issue on trac.edgewall.org. If the error was generated in a plugin, the error will be reported to the project URL provided that the plugin author has included the project URL in the plugin installation data. The user possessing TRAC_ADMIN also sees a traceback and system information on the error page.

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See also: Trac Admin, Trac Environment