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Version 2 (modified by trac, at 2015-04-01T12:42:00Z) (diff)
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The Trac Configuration File

The Trac Configuration File
1. Global Configuration
2. Reference for settings

Trac is configured by editing 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 a complete environment reload and flush its caches 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 do not do this 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 set in the global file.

There are two more entries in the [inherit] section, templates_dir for sharing global templates and plugins_dir, for sharing plugins. Those entries can themselves 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 still to write a custom plugin doing an appropriate ITemplateStreamFilter transformation.

Reference for settings

This is a brief 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 (which is the default).	`false`

`[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. (since 0.11)	`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. (since 0.10*)	`/trunk, /branches/, /tags/`
`hide_properties`	Comma-separated list of version control properties to hide from the repository browser. (since 0.9)	`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. (since 0.11)	(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. (since 0.11)	(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. (since 0.11)	`(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. (since 0.11)	`(136, 136, 255)`
`oneliner_properties`	Comma-separated list of version control properties to render as oneliner wiki content in the repository browser. (since 0.11)	`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 (which is the default).	`false`
`wiki_properties`	Comma-separated list of version control properties to render as wiki content in the repository browser. (since 0.11)	`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 (since 0.10).	`10000000`
`max_diff_files`	Maximum number of modified files for which the changeset view will attempt to show the diffs inlined (since 0.10).	`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.	`true`

`[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
webadmin.* = enabled

The first option tells Trac to disable the report module. The second option instructs Trac to enable all components in the webadmin 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).

`[fullblog]`

`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`

`[graphviz]`

`cache_dir`	The directory that will be used to cache the generated images. Note that if different than the default (gvcache), this directory must exist. If not given as an absolute path, the path will be relative to the Trac environment's directory.	`gvcache`
`cache_manager`	If this entry exists and set to true in the configuration file, then the cache management logic will be invoked and the cache_max_size, cache_min_size, cache_max_count and cache_min_count must be defined.	`disabled`
`cache_max_count`	The maximum number of files that the cache should contain. This is the high watermark for the directory entry count.	`2000`
`cache_max_size`	The maximum size in bytes that the cache should consume. This is the high watermark for disk space used.	`10485760`
`cache_min_size`	When cleaning out the cache, remove files until this size in bytes is used by the cache. This is the low watermark for disk space used.	`5242880`
`cache_minax_count`	The maximum number of files that the cache should contain. This is the high watermark for the directory entry count.	`1500`
`cmd_path`	Full path to the directory where the graphviz programs are located. If not specified, the default is /usr/bin on Linux, c:\Program Files\ATT\Graphviz\bin on Windows and /usr/local/bin on FreeBSD 6.	(no default)
`default_graph_dpi`	Default dpi setting for graphviz, used during SVG to PNG rasterization.	`96`
`encoding`	The encoding which should be used for communicating with Graphviz (should match -Gcharset if given).	`utf-8`
`out_format`	Graph output format. Valid formats are: png, jpg, svg, svgz, gif. If not specified, the default is png. This setting can be overrided on a per-graph basis.	`png`
`png_antialias`	If this entry exists in the configuration file, then PNG outputs will be antialiased. Note that this requires `rsvg` to be installed.	`disabled`
`processor`	Graphviz default processor. Valid processors are: dot, neato, twopi, fdp, circo. If not specified, the default is dot. This setting can be overrided on a per-graph basis. GraphvizMacro? will verify that the default processor is installed and will not work if it is missing. All other processors are optional. If any of the other processors are missing, a warning message will be sent to the trac log and GraphvizMacro? will continue to work.	`dot`
`rsvg_path`	Full path to where the rsvg binary can be found. The default is cmd_path + rsvg.	(no default)

`[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`

`[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. (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. (since 0.11)	(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. (since 0.11)	(no default)

`[iniadmin]`

`excludes`	Excludes this options. Comma separated list as `section:name`.	`iniadmin:excludes,iniadmin:passwords`
`passwords`	Show input-type as password instead of text. Comma separated list as `section:name`.	`trac:database,notification:smtp_password`

`[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.

The .compat option can be used to activate or disable a compatibility mode:

If the targeted Trac is running a version below 0.10 (r3526 to be precise), then it doesn't know how to dispatch an InterTrac link, and it's up to the local Trac to prepare the correct link. Not all links will work that way, but the most common do. This is called the compatibility mode, and is false by default.
If you know that the remote Trac knows how to dispatch InterTrac links, you can explicitly disable this compatibility mode and then any TracLinks can become InterTrac links.

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[(levelname)s: $(message)s In addition to regular key names supported by the Python logger library (see http://docs.python.org/library/logging.html), 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` (since 0.10.5)	(no default)
`log_level`	Level of verbosity in log. Should be one of (`CRITICAL`, `ERROR`, `WARN`, `INFO`, `DEBUG`).	`DEBUG`
`log_type`	Logging facility to use. Should be one of (`none`, `file`, `stderr`, `syslog`, `winlog`).	`none`

`[milestone]`

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.

(since 0.11)

`[mimeviewer]`

`max_preview_size`	Maximum file size for HTML preview. (since 0.9)	`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. (since 0.10)	`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\|INSTALL\|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. (since 0.9)	`8`
`treat_as_binary`	Comma-separated list of MIME types that should be treated as binary data. (since 0.11.5)	`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)
`always_notify_owner`	Always send notifications to the ticket owner (since 0.9).	`false`
`always_notify_reporter`	Always send notifications to any address in the reporter field.	`false`
`always_notify_updater`	Always send notifications to the person who causes the ticket property change and to any previous updater of that ticket.	`true`
`ambiguous_char_width`	Which width of ambiguous characters (e.g. 'single' or 'double') should be used in the table of 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. By default, the template is `$prefix Batch modify: $tickets_descr`. (since 1.0)	`$prefix Batch modify: $tickets_descr`
`email_sender`	Name of the component implementing `IEmailSender`. This component is used by the notification system to send emails. Trac currently provides `SmtpEmailSender` for connecting to an SMTP server, and `SendmailEmailSender` for running a `sendmail`-compatible executable. (since 0.12)	`SmtpEmailSender`
`ignore_domains`	Comma-separated list of domains that should not be considered part of email addresses (for usernames with Kerberos domains).	(no default)
`mime_encoding`	Specifies the MIME encoding scheme for emails. Valid options are 'base64' for Base64 encoding, 'qp' for Quoted-Printable, and 'none' for no encoding, in which case mails will be sent as 7bit if the content is all ASCII, or 8bit otherwise. (since 0.10)	`none`
`sendmail_path`	Path to the sendmail executable. The sendmail program must accept the `-i` and `-f` options. (since 0.12)	`sendmail`
`smtp_always_bcc`	Email address(es) to always send notifications to, addresses do not appear publicly (Bcc:). (since 0.10)	(no default)
`smtp_always_cc`	Email address(es) to always send notifications to, addresses can be seen by all recipients (Cc:).	(no default)
`smtp_default_domain`	Default host/domain to append to address that do not specify one.	(no default)
`smtp_enabled`	Enable email notification.	`false`
`smtp_from`	Sender address to use in notification emails.	`trac@localhost`
`smtp_from_author`	Use the action author as the sender of notification emails. (since 1.0)	`false`
`smtp_from_name`	Sender name to use in notification emails.	(no default)
`smtp_password`	Password for SMTP server. (since 0.9)	(no default)
`smtp_port`	SMTP server port to use for email notification.	`25`
`smtp_replyto`	Reply-To address to use in notification emails.	`trac@localhost`
`smtp_server`	SMTP server hostname to use for email notifications.	`localhost`
`smtp_subject_prefix`	Text to prepend to subject line of notification emails. If the setting is not defined, then the [$project_name] prefix. If no prefix is desired, then specifying an empty option will disable it. (since 0.10.1)	`__default__`
`smtp_user`	Username for SMTP server. (since 0.9)	(no default)
`ticket_subject_template`	A Genshi text template snippet used to get the notification subject. By default, the subject template is `$prefix #$ticket.id: $summary`. `$prefix` being the value of the `smtp_subject_prefix` option. (since 0.11)	`$prefix #$ticket.id: $summary`
`use_public_cc`	Recipients can see email addresses of other CC'ed recipients. If this option is disabled (the default), recipients are put on BCC. (since 0.10)	`false`
`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. (since 0.10)	`false`
`use_tls`	Use SSL/TLS to send notifications over SMTP. (since 0.10)	`false`

`[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. (since 0.11.3)	`.`
`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="http://trac.edgewall.org/">http://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)

`[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. (since 0.11.2)	`status!=closed&cc~=$USER`
`default_query`	The default query for authenticated users. The query is either in query language syntax, or a URL query string starting with `?` as used in `query:` Trac links. (since 0.11.2)	`status!=closed&owner=$USER`
`items_per_page`	Number of tickets displayed per page in ticket queries, by default (since 0.11)	`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 (since 0.11)	`100`
`items_per_page_rss`	Number of tickets displayed in the rss feeds for reports (since 0.11)	`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. (since 0.11)	`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, relative to Trac environment's directory or absolute. (since 0.12) (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`
`default_format`	Set the default format for the handler of the `/tags` domain. \|\| `oldlist` (default value) \|\| The original format with a bulleted-list of "linked-id description (tags)" \|\| \|\| `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.
`ignore_closed_tickets`	Do not collect tags from closed tickets.	`enabled`
`listtagged_default_format`	Set the default format for the handler of the `/tags` domain. \|\| `oldlist` (default value) \|\| The original format with a bulleted-list of "linked-id description (tags)" \|\| \|\| `compact` \|\| bulleted-list of "linked-description" \|\| \|\| `table` \|\| table... (see corresponding column option) \|\|	`oldlist`
`listtagged_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`
`listtagged_exclude_realms`	Comma-separated list of realms to exclude from tags queries by default, unless specifically included using "realm:realm-name" in a query.
`listtagged_items_per_page`	Number of tagged resources displayed per page in tag queries, by default	`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`
`ticket_fields`	List of ticket fields to expose as tags.	`keywords`
`wiki_page_link`	Link a tag to the wiki page with same name, if it exists.	`enabled`

`[ticket]`

`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 (since 0.11).	`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 (since 0.9).	`defect`
`default_version`	Default version for newly created tickets.	(no default)
`max_comment_size`	Maximum allowed comment size in characters. (since 0.11.2).	`262144`
`max_description_size`	Maximum allowed description size in characters. (since 0.11).	`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'). (since 0.11).	`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. (since 0.9)	`false`
`workflow`	Ordered list of workflow controllers to use for ticket actions (since 0.11).	`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.