The Trac Configuration File

Global Configuration

In versions prior to 0.11, the global configuration was by default located in $prefix/share/trac/conf/trac.ini or sometimes /etc/trac/trac.ini depending on the distribution. If you're upgrading, you may want to specify that file to inherit from.

Global options will be merged with the environment-specific options, where local options override global options. The options file is specified as follows:

[inherit]
file = /usr/share/trac/conf/trac.ini

Note that you can also specify a global option file when creating a new project, by adding the option --inherit=/path/to/global/options to trac-admin's initenv command. If you would not do this but nevertheless intend to use a global option file with your new environment, you would have to go through the newly generated conf/trac.ini file and delete the entries that would otherwise override those set in the global file.

Reference

This is a brief reference of available configuration options.

[account-manager]

account_changes_notify_addresses	List of email addresses that get notified of user changes, ie, new user, password change and delete user.
authentication_url
force_passwd_change	Forge the user to change password when it's reset.
generated_password_length	Length of the randomly-generated passwords created when resetting the password for an account.
hash_method
htdigest_realm
notify_actions	Comma separated list of actions to notify of. Available actions 'new', 'change', 'delete'.
password_file	Path to the users file. Leave blank to locate the users file by reading svnserve.conf
password_format
password_store

[announcer]

admit_domains	Comma-separated list of domains that should be considered as valid for email addresses (such as localdomain)
always_notify_component_owner	Whether or not to notify the owner of the ticket's component.
always_notify_owner	The always_notify_owner option mimics the option of the same name in the notification section, except users can opt-out in their preferences. Used only if LegacyTicketSubscriber is enabled.
always_notify_reporter	The always_notify_reporter option mimics the option of the same name in the notification section, except users can opt-out in their preferences. Used only if LegacyTicketSubscriber is enabled.
always_notify_updater	The always_notify_updater option mimics the option of the same name in the notification section, except users can opt-out in their preferences. Used only if LegacyTicketSubscriber is enabled.
ctxtnav_names	Text of context navigation entries. An empty list removes them from the context navigation bar.
default_email_format	The default mime type of the email notifications. This can be overriden on a per user basis through the announcer preferences panel.
email_address_resolvers	Comma seperated list of email resolver components in the order they will be called. If an email address is resolved, the remaining resolvers will no be called.
ignore_cc_changes	When true, the system will not send out announcement events if the only field that was changed was CC. A change to the CC field that happens at the same as another field will still result in an event being created.
ignore_domains	Comma-separated list of domains that should not be considered part of email addresses (for usernames with Kerberos domains)
joinable_groups	Joinable groups represent 'opt-in' groups that users may freely join. The name of the groups should be a simple alphanumeric string. By adding the group name preceeded by @ (such as @sec for the sec group) to the CC field of a ticket, everyone in that group will receive an announcement when that ticket is changed.
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. Note that the no encoding means that non-ASCII characters in text are going to cause problems with notifications (since 0.10).
never_notify_updater	The never_notify_updater option mimics the plugin of the same name in the notification section, except users can opt-out in their preferences. Used only if LegacyTicketSubscriber is enabled.
smtp_always_bcc	Email address(es) to always send notifications to, addresses do not appear publicly (Bcc:). (since 0.10).
smtp_always_cc	Email address(es) to always send notifications to, addresses can be see by all recipients (Cc:).
smtp_default_domain	Default host/domain to append to address that do not specify one
smtp_enabled	Enable SMTP (email) notification.
smtp_from	Sender address to use in notification emails.
smtp_from_name	Sender name to use in notification emails.
smtp_password	Password for SMTP server. (since 0.9).
smtp_port	SMTP server port to use for email notification.
smtp_replyto	Reply-To address to use in notification emails.
smtp_server	SMTP server hostname to use for email notifications.
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).
smtp_to	Default To: field
smtp_user	Username for SMTP server. (since 0.9).
ticket_email_header_fields	Comma seperated list of fields to appear in tickets. Use * to include all headers.
ticket_email_subject	Format string for ticket email subject. This is a mini genshi template that is passed the ticket event and action objects.
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).
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).
use_threaded_delivery	If true, the actual delivery of the message will occur in a separate thread. Enabling this will improve responsiveness for requests that end up with an announcement being sent over email. It requires building Python with threading support enabled-- which is usually the case. To test, start Python and type 'import threading' to see if it raises an error.
use_tls	Use SSL/TLS to send notifications (since 0.10).
watchable_paths	List of URL paths to allow watching. Globs are supported.
wiki_email_diff	Should a wiki diff be sent with emails?
wiki_email_subject	Format string for the wiki email subject. This is a mini genshi template and it is passed the page, event and action objects.

[attachment]

max_size	Maximum allowed file size (in bytes) for ticket and wiki attachments.
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).

[autocomplete]

fields

select fields to transform to autocomplete text boxes

[autoquery]

excluded_fields	fields to exclude from AutoQuery markup
query_args	additional arguments to the query string

[bitten]

adjust_timestamps	Whether the timestamps of builds should be adjusted to be close to the timestamps of the corresponding changesets.
build_all	Whether to request builds of older revisions even if a younger revision has already been built.
logs_dir	The directory on the server in which client log files will be stored.
quick_status	Whether to show the current build status withing the Trac main navigation bar
slave_timeout	The time in seconds after which a build is cancelled if the slave does not report progress.
stabilize_wait	The time in seconds to wait for the repository to stabilize before queuing up a new build. This allows time for developers to check in a group of related changes back to back without spawning multiple builds.

[breadcrumbs]

ignore pattern	Resource names that match this pattern will not be added to the breadcrumbs trail.
max_crumbs	Indicates the maximum number of breadcrumbs to store per user.
paths	List of URL paths to allow breadcrumb tracking. Globs are supported.

[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)
downloadable_paths	List of repository paths that can be downloaded. Leave the 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) (since 0.10)
hide_properties	Comma-separated list of version control properties to hide from the repository browser. (since 0.9)
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)
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)
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)
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)
oneliner_properties	Comma-separated list of version control properties to render as oneliner wiki content in the repository browser. (since 0.11)
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).
wiki_properties	Comma-separated list of version control properties to render as wiki content in the repository browser. (since 0.11)

[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).
max_diff_files	Maximum number of modified files for which the changeset view will attempt to show the diffs inlined (since 0.10).
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.

[datefield]

first_day	First day of the week. 0 == Sunday.
format	The format to use for dates. Valid values are dmy, mdy, and ymd.
separator	The separator character to use for dates.

[discussion]

default_display	Default display mode of topic message list.
forum_sort	Column by which will be sorted forum lists. Possible values are: id group name subject time moderators description topics replies lasttopic lastreply
forum_sort_direction	Direction of forum lists sorting. Possible values are: asc desc.
title	Main navigation bar button title.
topic_sort	Column by which will be sorted topic lists. Possible values are: id forum subject time author body replies lastreply.
topic_sort_direction	Direction of topic lists sorting. Possible values are: asc desc.

[downloads]

ext	List of file extensions allowed to upload.
path	Directory to store uploaded downloads.
title	Main navigation bar button title.
unique_filename	If enabled checks if uploaded file has unique name.
visible_fields	List of downloads table fields that should be visible to users on Downloads section.

[doxygen]

default_documentation	Default documentation project, relative to [doxygen] path. When no explicit path is given in a documentation request, this path will be prepended to the request before looking for documentation files.
default_namespace	Default namespace to search for named objects in.
encoding	Default encoding used by the generated documentation files.
ext	Space separated list of extensions for doxygen managed files.
html_output	Default documentation project suffix, as generated by Doxygen using the HTML_OUTPUT Doxygen configuration setting.
index	Default index page to pick in the generated documentation.
path	Directory containing doxygen generated files.
source_ext	Space separated list of source files extensions
title	Title to use for the main navigation tab.
wiki_index	Wiki page to use as the default page for the Doxygen main page. If set, supersedes the [doxygen] index option.

[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
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
num_items_front	Option to specify how many recent posts to display on the front page of the Blog (and RSS feeds).
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.

[fullblog-notification]

always_notify_author	Always notify the author of a blog change Defaults to false
from_email	Sender address to use in notification emails.
from_name	Sender name to use in notification emails. Defaults to project name.
smtp_always_cc	Comma separated list of email address(es) to always send notifications to. Addresses can be seen by all recipients (Cc:).
subject_template	A Genshi text template snippet used to get the notification subject.

[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.
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.
cache_max_count	The maximum number of files that the cache should contain. This is the high watermark for the directory entry count.
cache_max_size	The maximum size in bytes that the cache should consume. This is the high watermark for disk space used.
cache_min_count	The minimum number of files that the cache should contain. This is the low watermark for the directory entry count.
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.
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.
default_graph_dpi	Default dpi setting for graphviz, used during SVG to PNG rasterization.
encoding	The encoding which should be used for communicating with Graphviz (should match -Gcharset if given).
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_antialias	If this entry exists in the configuration file, then PNG outputs will be antialiased. Note that this requires rsvg to be installed.
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.
rsvg_path	Full path to the rsvg program (including the filename). The default is <cmd_path>/rsvg.

[header_logo]

alt	Alternative text for the header logo.
height	Height of the header logo image in pixels.
link	URL to link to from header logo.
src	URL of the image to use as header logo.
width	Width of the header logo image in pixels.

[httpauth]

formats	Request formats to force HTTP authentication on
paths	Paths to force HTTP authentication on.

[hudson]

alternate_success_icon	Use an alternate success icon (green ball instead of blue)
display_build_descriptions	Whether to display the build descriptions for each build instead of the canned "Build finished successfully" etc messages.
display_in_new_tab	Open hudson page in new tab/window
display_modules	Display status of modules in the timeline too. Note: enabling this may slow down the timeline retrieval significantly
job_url	The url of the top-level hudson page if you want to display all jobs, or a job or module url (such as  http://localhost/hudson/job/build_foo/) if you want only display builds from a single job or module. This must be an absolute url.
main_page	The url of the hudson main page to which the trac nav entry should link; if empty, no entry is created in the nav bar. This may be a relative url.
password	The password to use to access hudson
username	The username to use to access hudson

[inherit]

plugins_dir	Path of the directory containing additional plugins. 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)
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)

[iniadmin]

excludes	Excludes this options. Comma separated list as section:name.
passwords	Show input-type as password instead of text. Comma separated list as section:name.

[logging]

log_file	If log_type is file, this should be a path to the log-file.
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 library (see  http://docs.python.org/lib/node422.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)
log_level	Level of verbosity in log. Should be one of (CRITICAL, ERROR, WARN, INFO, DEBUG).
log_type	Logging facility to use. Should be one of (none, file, stderr, syslog, winlog).

[logviewer]

autolevel	Which log level shall be used on autoload (only applies when autoload is enabled). This integer value defaults to 3 (warnings). Possible values: 1=critical, 2=error, 3=warning, 4=info, 5=debug
autoload	Whether the log file content should be automatically loaded when the module is called, i.e. even before the form was submitted. This is a boolean option (true/false), and defaults to false.
autotail	Only applies to autoload: Restrict the evaluated lines to the last N lines. Defaults to 1000.
autoup	Include log events of higher levels than autolevel on autoload? This boolean option defaults to true - and only applies on autoload
defaultlevel	Preset for the log level dropdown (if autoload is disabled). This integer value defaults to 3 (warnings). Possible values: 1=critical, 2=error, 3=warning, 4=info, 5=debug
defaulttail	Preset for the Tail input (restrict query to the last N lines of the logfile to load). This must be a number (integer), and by default is empty (not set)
defaultup	Check the box to include log events of higher levels when autoload is disabled? This boolean option defaults to true.

[mastertickets]

dot_path	Path to the dot executable.
gs_path	Path to the ghostscript executable.
use_gs	If enabled, use ghostscript to produce nicer output.

[mdashboard]

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. (Since 0.11)
default_daysback	Default number of days displayed in the Timeline, in days. (since 0.9.)
stats_provider	Name of the component implementing ITicketGroupStatsProvider, which is used to collect statistics on groups of tickets for display in the milestone views.
tickettype_stats_provider	Name of the component implementing ITicketGroupStatsProvider, which is used to collect statistics on groups of tickets for display in the milestone views.

[menu-custom]

managed_menus	List of menus to be controlled by the Menu Manager
serve_ui_files

[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.

[mimeviewer]

enscript_modes	List of additional MIME types known by Enscript. For each, a tuple mimetype:mode:quality has to be specified, where mimetype is the MIME type, mode is the corresponding Enscript 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 Enscript render, which is 2 (since 0.10).
enscript_path	Path to the Enscript executable.
max_preview_size	Maximum file size for HTML preview. (since 0.9)
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)
php_path	Path to the PHP executable (since 0.9).
pygments_default_style	The default style to use for Pygments syntax highlighting.
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.
tab_width	Displayed tab width in file preview. (since 0.9)
treat_as_binary	Comma-separated list of MIME types that should be treated as binary data. (since 0.11.5)

[navcontrol]

labels	Labels to assign to navigation items. They should be specified as navitem:label e.g wiki:My Wiki,browser:Code
mainnav	Items to remove from the mainnav bar
mainnav_to_metanav	Items to shift from mainnav to metanav bar
metanav	Items to remove from the metanav bar
metanav_to_mainnav	Items to shift from metanav to mainnav bar

[notification]

admit_domains	Comma-separated list of domains that should be considered as valid for email addresses (such as localdomain)
always_notify_owner	Always send notifications to the ticket owner (since 0.9).
always_notify_reporter	Always send notifications to any address in the reporter field.
always_notify_updater	Always send notifications to the person who causes the ticket property change and to any previous updater of that ticket.
ignore_domains	Comma-separated list of domains that should not be considered part of email addresses (for usernames with Kerberos domains)
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)
notify_on_failed_build	Notify if bitten build fails.
notify_on_successful_build	Notify if bitten build succeeds.
smtp_always_bcc	Email address(es) to always send notifications to, addresses do not appear publicly (Bcc:). (since 0.10).
smtp_always_cc	Email address(es) to always send notifications to, addresses can be seen by all recipients (Cc:).
smtp_default_domain	Default host/domain to append to address that do not specify one
smtp_enabled	Enable SMTP (email) notification.
smtp_from	Sender address to use in notification emails.
smtp_from_name	Sender name to use in notification emails.
smtp_password	Password for SMTP server. (since 0.9).
smtp_port	SMTP server port to use for email notification.
smtp_replyto	Reply-To address to use in notification emails.
smtp_server	SMTP server hostname to use for email notifications.
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).
smtp_user	Username for SMTP server. (since 0.9).
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)
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).
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).
use_tls	Use SSL/TLS to send notifications (since 0.10).

[numberedheadlines]

numbered_outline	Whether or not to number the headlines in an outline (e.g. TOC)
numbering_starts_at_level_two	Whether or not to start the numbering at level two instead at level one.

[pdashboard]

stats_provider

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

[privatetickets]

group_blacklist

Groups that do not affect the common membership check.

[progressmeter]

stats_provider

Name of the component implementing ITicketGroupStatsProvider, which is used to collect statistics on groups of tickets for meters generated by the ProgressMeterMacro plugin.

[project]

admin	E-Mail address of the project's administrator.
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.
footer	Page footer text (right-aligned).
icon	URL of the icon of the project.
name	Name of the project.
url	URL of the main project web site, usually the website in which the base_url resides.

[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)
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)
items_per_page	Number of tickets displayed per page in ticket queries, by default (since 0.11)

[report]

items_per_page	Number of tickets displayed per page in ticket reports, by default (since 0.11)
items_per_page_rss	Number of tickets displayed in the rss feeds for reports (since 0.11)

[revisionlog]

default_log_limit

Default value for the limit argument in the TracRevisionLog (since 0.11).

[revtree]

abstime	Timeline filters start on absolute time or on the youngest revision.
branch_re	Regular expression to extract branches from paths
contexts	Navigation contexts where the Revtree item appears. If empty, the Revtree item appears in the main navigation bar.
optimizer	Name of the component implementing IRevtreeOptimizer, which is used for optimizing revtree element placements.
revbase	Oldest revision to consider (older revisions are ignored)
scale	Default rendering scale for the SVG graph
style	Revtree style, 'compact' or 'timeline'
trunks	Branches that are considered as trunks

[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.

[search]

min_query_length

Minimum length of query string allowed when performing a search.

[section-edit]

preview_whole_page
serve_ui_files

[sequencediagram]

style

Diagram style

[spam-filter]

akismet_api_key	Wordpress key required to use the Akismet API.
akismet_api_url	URL of the Akismet service.
akismet_karma	By how many points an Akismet reject impacts the overall karma of a submission.
attachment_sample_size	The number of bytes from an attachment to pass through the spam filters.
authenticated_karma	The karma given to authenticated users, in case trust_authenticated is false.
bayes_karma	By what factor Bayesian spam probability score affects the overall karma of a submission.
bayes_min_training	The minimum number of submissions in the training database required for the filter to start impacting the karma of submissions.
captcha	CAPTCHA method to use for verifying humans.
captcha_expression_ceiling	Maximum value of individual terms in numeric CAPTCHA expression.
captcha_expression_terms	Number of terms in numeric CAPTCHA expression.
captcha_image_alphabet	Alphabet to choose image CAPTCHA challenge from.
captcha_image_font_size	Font size to use in image CAPTCHA.
captcha_image_fonts	Set of fonts to choose from when generating image CAPTCHA.
captcha_image_letters	Number of letters to use in image CAPTCHA challenge.
captcha_karma	By how many points a successful CAPTCHA response increases the overall score.
captcha_karma_lifetime	Time in seconds that a successful CAPTCHA response increases karma.
extlinks_karma	By how many points too many external links in a submission impact the overall score.
httpbl_api_key	Http:BL API key required for use.
httpbl_spammer_karma	By how many points listing as "comment spammer" impacts the overall karma of a submission.
ip_blacklist_karma	By how many points blacklisting by a single server impacts the overall karma of a submission.
ip_blacklist_servers	Servers used for IP blacklisting.
ip_throttle_karma	By how many points exceeding the configured maximum number of posts per hour impacts the overall score.
is_forwarded	Interpret X-Forwarded-For header for IP checks.
logging_enabled	Whether all content submissions and spam filtering activity should be logged to the database.
max_external_links	The maximum number of external links allowed in a submission until that submission gets negative karma.
max_posts_by_ip	The maximum allowed number of submissions per hour form a single IP address. If this limit is exceeded, subsequent permissions get negative karma.
min_karma	The minimum score required for a submission to be allowed.
purge_age	The number of days after which log entries should be purged.
regex_karma	By how many points a match with a pattern on the BadContent page impacts the overall karma of a submission.
reject_handler	The handler used to reject content.
session_karma	By how many points an existing and configured session improves the overall karma of the submission. A third of the points is granted for having an existing session at all, the other two thirds are granted when the user has his name and/or email address set in the session, respectively.
trust_authenticated	Whether content submissions by authenticated users should be trusted without checking for potential spam or other abuse.

[svn]

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/*
repository_url	base URL of svn repository
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]

ignore_closed_tickets	Do not collect tags from closed tickets.
ticket_fields	List of ticket fields to expose as tags.

[theme]

enable_css	Enable or disable custom CSS from theme.
theme	The theme to use to style this Trac.

[ticket]

default_cc	Default cc: list for newly created tickets.
default_component	Default component for newly created tickets.
default_description	Default description for newly created tickets.
default_keywords	Default keywords for newly created tickets.
default_milestone	Default milestone for newly created tickets.
default_owner	Default owner for newly created tickets.
default_priority	Default priority for newly created tickets.
default_resolution	Default resolution for resolving (closing) tickets (since 0.11).
default_severity	Default severity for newly created tickets.
default_summary	Default summary (title) for newly created tickets.
default_type	Default type for newly created tickets (since 0.9).
default_version	Default version for newly created tickets.
max_comment_size	Don't accept tickets with a too big comment. (since 0.11.2)
max_description_size	Don't accept tickets with a too big description. (since 0.11).
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).
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 (since 0.9).
workflow	Ordered list of workflow controllers to use for ticket actions (since 0.11).

[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. (Since 0.11)
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. (since 0.11)
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).
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. (since 0.11).
default_daysback	Default number of days displayed in the Timeline, in days. (since 0.9.)
max_daysback	Maximum number of days (-1 for unlimited) displayable in the Timeline. (since 0.11)
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. (since 0.11).
ticket_show_details	Enable the display of all ticket changes in the timeline, not only open / close operations (since 0.9).

[trac]

authz_file	Path to Subversion  authorization (authz) file
authz_module_name	The module prefix used in the authz_file.
auto_reload	Automatically reload template files after modification.
backup_dir	Database backup location
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.
check_auth_ip	Whether the IP address of the user should be checked for authentication (since 0.9).
database	Database connection string for this project
debug_sql	Show the SQL queries in the Trac log, at DEBUG level. (Since 0.11.5)
default_charset	Charset to be used when in doubt.
default_handler	Name of the component that handles requests to the base URL. Options include TimelineModule, RoadmapModule, BrowserModule, QueryModule, ReportModule, TicketModule and WikiModule. The default is WikiModule. (since 0.9)
default_timezone	The default timezone to use
htdocs_location	Base URL of the core static resources.
ignore_auth_case	Whether login names should be converted to lower case (since 0.9).
mainnav	Order of the items to display in the mainnav navigation bar, listed by IDs. See also TracNavigation.
metanav	Order of the items to display in the metanav navigation bar, listed by IDs. See also TracNavigation.
mysqldump_path	Location of mysqldump for MySQL database backups
never_obfuscate_mailto	Never obfuscate mailto: links explicitly written in the wiki, even if show_email_addresses is false or the user has not the EMAIL_VIEW permission (since 0.11.6).
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. Defaults to the DefaultPermissionPolicy (pre-0.11 behavior) and LegacyAttachmentPolicy (map ATTACHMENT_* permissions to realm specific ones)
permission_store	Name of the component implementing IPermissionStore, which is used for managing user and group permissions.
pg_dump_path	Location of pg_dump for Postgres database backups
repository_dir	Path to local repository. This can also be a relative path (since 0.11).
repository_type	Repository connector type. (since 0.10)
request_filters	Ordered list of filters to apply to all requests (since 0.10).
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. (since 0.11.2)
show_email_addresses	Show email addresses instead of usernames. If false, we obfuscate email addresses (since 0.11).
show_ip_addresses	Show IP addresses for resource edits (e.g. wiki). (since 0.11.3).
timeout	Timeout value for database connection, in seconds. Use '0' to specify no timeout. (Since 0.11)
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. (since 0.10.5)

[wiki]

ignore_missing_pages	Enable/disable highlighting CamelCase links to missing pages (since 0.9).
max_size	Maximum allowed wiki page size in bytes. (since 0.11.2)
render_unsafe_content	Enable/disable the use of unsafe HTML tags such as <script> or <embed> with the HTML WikiProcessor (since 0.10.4). For public sites where anonymous users can edit the wiki it is recommended to leave this option disabled (which is the default).
split_page_names	Enable/disable splitting the WikiPageNames with space characters (since 0.10).

[wiki-notification]

attach_diff	Send diff's as an attachment instead of inline in email body.
banned_addresses	A comma separated list of email addresses that should never be sent a notification email.
from_name	Sender name to use in notification emails. Defaults to project name.
redirect_time	The default seconds a redirect should take when watching/un-watching a wiki page
smtp_always_bcc	Comma separated list of email address(es) to always send notifications to. Addresses do not appear publicly (Bcc:).
smtp_always_cc	Comma separated list of email address(es) to always send notifications to. Addresses can be seen by all recipients (Cc:).
smtp_from	Sender address to use in notification emails.
subject_template	A Genshi text template snippet used to get the notification subject.
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. (values: 1, on, enabled, true or 0, off, disabled, false)

[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.

See the Plugins page on About Trac to get the list of active components (requires CONFIG_VIEW permissions.)

See also: TracPlugins

[ticket-custom]

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

[ticket-workflow]

(since 0.11)

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.

[milestone-groups]

(since 0.11)

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.

Example configuration (which is also the default):

closed = closed
closed.order = 0                     # sequence number in the progress bar
closed.query_args = group=resolution # optional extra param for the query
closed.overall_completion = true     # count for overall completion

active = *                           # one catch-all group is allowed
active.order = 1
active.css_class = open              # CSS class for this interval
active.label = in progress           # Displayed label for this group

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). New styles can easily be added using the following selector: table.progress td.<class>

[svn:externals]

(since 0.11)

The TracBrowser for Subversion can interpret the svn:externals property of folders out of the box. However, if those externals are not using the http: protocol, or if a link to a different repository browser (such another Trac or  ViewVC) is desired, then Trac needs to be able to map an external prefix to this other 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/$path/?pathrev=25914
4 = svn://anotherserver.com/tools_repository  http://ourserver/trac/support/browser/$path?rev=$rev

With the above, the svn://anotherserver.com/tools_repository/tags/1.1/tools external will be mapped to http://ourserver/trac/support/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.

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See also: TracGuide, TracAdmin, TracEnvironment