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# The Trac Configuration File

#### Contents

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.

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 two more options in the [inherit] section, templates_dir for sharing global templates 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 TracEnvironment 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 TracInterfaceCustomization 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

### [authz_policy]

 authz_file Location of authz policy configuration file. Non-absolute paths are relative to the Environment conf directory. (no default)
 ignore_pattern Resource names that match this pattern will not be added to the breadcrumbs trail. (no default) label Text label to show before breadcrumb list. If empty, 'Breadcrumbs:' is used as default. (no default) max_crumbs Indicates maximum number of breadcrumbs to store per user. 6 paths List of URL paths to allow breadcrumb tracking. Globs are supported. /wiki/,/ticket/,/milestone/

### [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).

### [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 TracEnvironment; 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]

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 InterTrac prefixes. Options in this section whose name contain a . define aspects of the InterTrac prefix corresponding to the option name up to the .. Options whose name don't contain a . define an alias.

The .url is mandatory and is used for locating the other Trac. This can be a relative URL in case that Trac environment is located on the same server.

The .title information is used for providing a useful tooltip when moving the cursor over an InterTrac link.

Example configuration:

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

# -- Link to an external Trac:
trac.title = Edgewall's Trac for Trac
trac.url = http://trac.edgewall.org


### [interwiki]

Every option in the [interwiki] section defines one InterWiki 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). DEBUG log_type Logging facility to use. Should be one of (none, file, stderr, syslog, winlog). none

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 WikiStart 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


 managed_menus List of menus to be controlled by the Menu Manager mainnav,metanav serve_ui_files enabled

### [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


### [milestone]

 default_group_by Default field to use for grouping tickets in the grouped progress bar. (since 1.2) component default_retarget_to Default milestone to which tickets are retargeted when closing or deleting a milestone. (since 1.1.2) (no default) stats_provider Name of the component implementing ITicketGroupStatsProvider, which is used to collect statistics on groups of tickets for display in the milestone views. DefaultTicketGroupStatsProvider

### [milestone-groups]

As the workflow for tickets is now configurable, there can be many ticket states, and simply displaying closed tickets vs. all the others is maybe not appropriate in all cases. This section enables one to easily create groups of states that will be shown in different colors in the milestone progress bar.

Note that the groups can only be based on the ticket status, nothing else. In particular, it's not possible to distinguish between different closed tickets based on the resolution.

Example configuration with three groups, closed, new and active (the default only has closed and active):

# the 'closed' group correspond to the 'closed' tickets
closed = closed

# .order: sequence number in the progress bar
closed.order = 0

# .query_args: optional parameters for the corresponding
#              query.  In this example, the changes from the
#              default are two additional columns ('created' and
#              'modified'), and sorting is done on 'created'.
closed.query_args = group=resolution,order=time,col=id,col=summary,col=owner,col=type,col=priority,col=component,col=severity,col=time,col=changetime

# .overall_completion: indicates groups that count for overall
#                      completion percentage
closed.overall_completion = true

new = new
new.order = 1
new.css_class = new
new.label = new

# Note: one catch-all group for other statuses is allowed
active = *
active.order = 2

# .css_class: CSS class for this interval
active.css_class = open

# .label: displayed label for this group
active.label = in progress


The definition consists in a comma-separated list of accepted status. Also, '*' means any status and could be used to associate all remaining states to one catch-all group.

The CSS class can be one of: new (yellow), open (no color) or closed (green). Other styles can easily be added using custom CSS rule: table.progress td.<class> { background: <color> } to a site/style.css file for example.

### [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) ambiguous_char_width Width of ambiguous characters that should be used in the table of the notification mail. If single, the same width as characters in US-ASCII. This is expected by most users. If double, twice the width of US-ASCII characters. This is expected by CJK users. (since 0.12.2) single batch_subject_template Like ticket_subject_template but for batch modifications. (since 1.0) ${prefix} Batch modify:${tickets_descr} 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. (since 0.12) 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. (since 0.12) 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) ticket_subject_template A Genshi text template snippet used to get the notification subject. The template variables are documented on the TracNotification page. ${prefix} #${ticket.id}:${summary} 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.

Available subscribers:

SubscriberDescription
AlwaysEmailSubscriber
CarbonCopySubscriberTicket that I'm listed in the CC field is modified
NewTicketSubscriberAny ticket is created
TicketOwnerSubscriberTicket that I own is created or modified
TicketPreviousUpdatersSubscriberTicket that I previously updated is modified
TicketReporterSubscriberTicket that I reported is modified
TicketUpdaterSubscriberI update a ticket

### [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
http://trac.edgewall.org/ 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.

### [query]

 default_anonymous_query The default query for anonymous users. The query is either in query language syntax, or a URL query string starting with ? as used in query: Trac links. status!=closed&cc~=$USER default_query The default query for authenticated users. The query is either in query language syntax, or a URL query string starting with ? as used in query: Trac links. status!=closed&owner=$USER items_per_page Number of tickets displayed per page in ticket queries, by default. 100 ticketlink_query The base query to be used when linkifying values of ticket fields. The query is a URL query string starting with ? as used in query: Trac links. (since 0.12) ?status=!closed

### [report]

 items_per_page Number of tickets displayed per page in ticket reports, by default. 100 items_per_page_rss Number of tickets displayed in the rss feeds for reports. 0

### [repositories]

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

This is especially suited for setting up convenience aliases, short-lived repositories, or during the initial phases of an installation.

See TracRepositoryAdmin for details about the format adopted for this section and the rest of that page for the other alternatives.

(since 0.12)

### [revisionlog]

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

### [roadmap]

 stats_provider Name of the component implementing ITicketGroupStatsProvider, which is used to collect statistics on groups of tickets for display in the roadmap views. DefaultTicketGroupStatsProvider

### [search]

 default_disabled_filters Specifies which search filters should be disabled by default on the search page. This will also restrict the filters for the quick search function. The filter names defined by default components are: wiki, ticket, milestone and changeset. For plugins, look for their implementation of the ISearchSource interface, in the get_search_filters() method, the first member of returned tuple. Once disabled, search filters can still be manually enabled by the user on the search page. (since 0.12) (no default) min_query_length Minimum length of query string allowed when performing a search. 3

### [sqlite]

 extensions Paths to ​sqlite extensions. The paths may be absolute or relative to the Trac environment. (since 0.12) (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) branches Comma separated list of paths categorized as branches. If a path ends with '*', then all the directory entries found below that path will be included. Example: /trunk, /branches/*, /projectAlpha/trunk, /sandbox/* trunk,branches/* eol_style End-of-Line character sequences when svn:eol-style property is native. If native, substitute with the native EOL marker on the server. Otherwise, if LF, CRLF or CR, substitute with the specified EOL marker. (since 1.0.2) native tags Comma separated list of paths categorized as tags. If a path ends with '*', then all the directory entries found below that path will be included. Example: /tags/*, /projectAlpha/tags/A-1.0, /projectAlpha/tags/A-v1.1 tags/*

### [svn:externals]

The TracBrowser for Subversion can interpret the svn:externals property of folders. By default, it only turns the URLs into links as Trac can't browse remote repositories.

However, if you have another Trac instance (or an other repository browser like ViewVC) configured to browse the target repository, then you can instruct Trac which other repository browser to use for which external URL. This mapping is done in the [svn:externals] section of the TracIni.

Example:

[svn:externals]
1 = svn://server/repos1                       http://trac/proj1/browser/$path?rev=$rev
2 = svn://server/repos2                       http://trac/proj2/browser/$path?rev=$rev
3 = http://theirserver.org/svn/eng-soft       http://ourserver/viewvc/svn/$path/?pathrev=25914 4 = svn://anotherserver.com/tools_repository http://ourserver/tracs/tools/browser/$path?rev=\$rev


With the above, the svn://anotherserver.com/tools_repository/tags/1.1/tools external will be mapped to http://ourserver/tracs/tools/browser/tags/1.1/tools?rev= (and rev will be set to the appropriate revision number if the external additionally specifies a revision, see the SVN Book on externals for more details).

Note that the number used as a key in the above section is purely used as a place holder, as the URLs themselves can't be used as a key due to various limitations in the configuration file parser.

Finally, the relative URLs introduced in Subversion 1.5 are not yet supported.

### [ticket]

 allowed_empty_fields Comma-separated list of select fields that can have an empty value. (since 1.1.2) milestone,version default_cc Default cc: list for newly created tickets. (no default) default_component Default component for newly created tickets. (no default) default_description Default description for newly created tickets. (no default) default_keywords Default keywords for newly created tickets. (no default) default_milestone Default milestone for newly created tickets. (no default) default_owner Default owner for newly created tickets. < default > default_priority Default priority for newly created tickets. major default_resolution Default resolution for resolving (closing) tickets. fixed default_severity Default severity for newly created tickets. (no default) default_summary Default summary (title) for newly created tickets. (no default) default_type Default type for newly created tickets. defect default_version Default version for newly created tickets. (no default) max_comment_size Maximum allowed comment size in characters. 262144 max_description_size Maximum allowed description size in characters. 262144 max_summary_size Maximum allowed summary size in characters. (since 1.0.2) 262144 preserve_newlines Whether Wiki formatter should respect the new lines present in the Wiki text. If set to 'default', this is equivalent to 'yes' for new environments but keeps the old behavior for upgraded environments (i.e. 'no'). default restrict_owner Make the owner field of tickets use a drop-down menu. Be sure to understand the performance implications before activating this option. See Assign-to as Drop-Down List. Please note that e-mail addresses are not obfuscated in the resulting drop-down menu, so this option should not be used if e-mail addresses must remain protected. disabled workflow Ordered list of workflow controllers to use for ticket actions. ConfigurableTicketWorkflow

### [ticket-custom]

In this section, you can define additional fields for tickets. See TracTicketsCustomFields for more details.

### [ticket-workflow]

The workflow for tickets is controlled by plugins. By default, there's only a ConfigurableTicketWorkflow component in charge. That component allows the workflow to be configured via this section in the trac.ini file. See TracWorkflow for more details.

### [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 newticket_formatter Which formatter flavor (e.g. 'html' or 'oneliner') should be used when presenting the description for new tickets. If 'oneliner', the [timeline] abbreviated_messages option applies. oneliner ticket_show_component Enable the display of component of tickets in the timeline. (since 1.1.1) disabled ticket_show_details Enable the display of all ticket changes in the timeline, not only open / close operations. disabled

### [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. (since 0.12) 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. (since 0.12) (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. (since 0.12) 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. WikiModule default_language The preferred language to use if no user preference has been set. (since 0.12.1) (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. 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 to allow serving the static resources for Trac directly from the web server. Note however that this only applies to the /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 1.11.3). 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-1.11.3.min.js, ​http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.11.3.min.js or ​https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js. (since 1.0) (no default) jquery_ui_location Location of the jQuery UI JavaScript library (version 1.11.4). 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/1.11.4/jquery-ui.min.js or ​http://ajax.aspnetcdn.com/ajax/jquery.ui/1.11.4/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 1.11.4). 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/1.11.4/themes/start/jquery-ui.css or ​http://ajax.aspnetcdn.com/ajax/jquery.ui/1.11.4/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. ReadonlyWikiPolicy,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 

### [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. (since 0.12.1) (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. (since 0.12) 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 CamelCase 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