Changes between Version 4 and Version 5 of TracLinks


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Timestamp:
Aug 2, 2024, 3:31:43 PM (5 months ago)
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trac
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  • TracLinks

    v4 v5  
    1 = Trac Links =
     1= Trac Links
     2
    23[[TracGuideToc]]
    3 
    4 TracLinks are a fundamental feature of Trac, because they allow easy hyperlinking between the various entities in the system—such as tickets, reports, changesets, Wiki pages, milestones, and source files—from anywhere WikiFormatting is used.
    5 
    6 TracLinks are generally of the form '''type:id''' (where ''id'' represents the
    7 number, name or path of the item) though some frequently used kinds of items
    8 also have short-hand notations.
    9 
    10 == Where to use TracLinks ==
     4[[PageOutline(2-5,Contents,pullout)]]
     5
     6TracLinks are a fundamental feature of Trac, allowing easy hyperlinking between the various entities in the system — such as tickets, reports, changesets, Wiki pages, milestones, and source files — from anywhere WikiFormatting is used.
     7
     8TracLinks are generally of the form '''type:id''' (where ''id'' represents the number, name or path of the item) though some frequently used kinds of items also have short-hand notations.
     9
     10== Where to use TracLinks
     11
    1112You can use TracLinks in:
    1213
     
    1718and any other text fields explicitly marked as supporting WikiFormatting.
    1819
    19 == Overview ==
     20== Overview
    2021
    2122||= Wiki Markup =||= Display =||
     
    2829 Milestones :: `milestone:1.0`
    2930 Attachment :: `attachment:example.tgz` (for current page attachment), `attachment:attachment.1073.diff:ticket:944` (absolute path)
    30  Changesets :: `r1`, `[1]`, `changeset:1` or (restricted) `[1/trunk]`, `changeset:1/trunk`
     31 Changesets :: `r1`, `[1]`, `changeset:1` or (restricted) `[1/trunk]`, `changeset:1/trunk`, `[1/repository]`
    3132 Revision log :: `r1:3`, `[1:3]` or `log:@1:3`, `log:trunk@1:3`, `[2:5/trunk]`
    3233 Diffs :: `diff:@1:3`, `diff:plugins/0.12/mercurial-plugin@9128:9953`,
    33           `diff:tags/trac-0.9.2/wiki-default//tags/trac-0.9.3/wiki-default` 
     34          `diff:tags/trac-0.9.2/wiki-default//tags/trac-0.9.3/wiki-default`
    3435          or `diff:trunk/trac@3538//sandbox/vc-refactoring@3539`
    35  Files :: `source:trunk/COPYING`, `source:/trunk/COPYING@200` (at version 200), `source:/trunk/COPYING@200#L25` (at version 200, line 25)
     36 Files :: `source:trunk/COPYING`, `source:/trunk/COPYING@200` (at version 200), `source:/trunk/COPYING@200#L25` (at version 200, line 25), `source:/trunk/COPYING@200:27-30#L25` (at version 200, line 25, highlighting lines 27-30)
    3637}}}
    3738{{{#!td
     
    3940 Parent page :: [..]
    4041 Tickets :: #1 or ticket:1
    41  Ticket comments :: comment:1:ticket:2 
     42 Ticket comments :: comment:1:ticket:2
    4243 Reports :: {1} or report:1
    4344 Milestones :: milestone:1.0
    4445 Attachment :: attachment:example.tgz (for current page attachment), attachment:attachment.1073.diff:ticket:944 (absolute path)
    45  Changesets :: r1, [1], changeset:1 or (restricted) [1/trunk], changeset:1/trunk
     46 Changesets :: r1, [1], changeset:1 or (restricted) [1/trunk], changeset:1/trunk, [1/repository]
    4647 Revision log :: r1:3, [1:3] or log:@1:3, log:trunk@1:3, [2:5/trunk]
    4748 Diffs :: diff:@1:3, diff:plugins/0.12/mercurial-plugin@9128:9953,
    48           diff:tags/trac-0.9.2/wiki-default//tags/trac-0.9.3/wiki-default 
     49          diff:tags/trac-0.9.2/wiki-default//tags/trac-0.9.3/wiki-default
    4950          or diff:trunk/trac@3538//sandbox/vc-refactoring@3539
    50  Files :: source:trunk/COPYING, source:/trunk/COPYING@200 (at version 200), source:/trunk/COPYING@200#L25 (at version 200, line 25)
    51 }}}
    52 
    53 '''Note:''' The wiki:CamelCase form is rarely used, but it can be convenient to refer to
    54 pages whose names do not follow WikiPageNames rules, i.e., single words,
    55 non-alphabetic characters, etc. See WikiPageNames for more about features specific
    56 to links to Wiki page names.
     51 Files :: source:trunk/COPYING, source:/trunk/COPYING@200 (at version 200), source:/trunk/COPYING@200#L25 (at version 200, line 25) source:/trunk/COPYING@200:28-31#L25 (at version 200, line 25, highlighting lines 28-31)
     52}}}
     53
     54'''Note:''' The wiki:CamelCase form is rarely used, but it can be convenient to refer to pages whose names do not follow WikiPageNames rules, ie single words, non-alphabetic characters, etc. See WikiPageNames for more about features specific to links to Wiki page names.
    5755
    5856
     
    8078}}}
    8179|--------------------------------------------------------------------------------------
    82 |||| `wiki` is the default if the namespace part of a full link is omitted:  || 
     80|||| `wiki` is the default if the namespace part of a full link is omitted:  ||
    8381{{{#!td
    8482{{{
     
    10199<wiki:Strange(page@!)>
    102100}}}
     101|--------------------------------------------------------------------------------------
     102|||| Quoting can be used with the full notation to allow brackets in the label. ||
     103{{{#!td
     104{{{
     105[TracIni#logging-log_type-option "[logging] log_type"]
     106}}}
     107}}}
     108{{{#!td
     109[TracIni#logging-log_type-option "[logging] log_type"]
     110}}}
    103111}}}
    104112
    105113TracLinks are a very simple idea, but actually allow quite a complex network of information. In practice, it's very intuitive and simple to use, and we've found the "link trail" extremely helpful to better understand what's happening in a project or why a particular change was made.
    106114
    107 
    108 == Advanced use of TracLinks ==
    109 
    110 === Relative links ===
     115== Advanced use of TracLinks
     116
     117=== Relative links
    111118
    112119To create a link to a [trac:SubWiki SubWiki]-page just use a '/':
     
    128135
    129136But in practice you often won't need to add the `../` prefix to link to a sibling page.
    130 For resolving the location of a wiki link, it's the target page closest in the hierarchy
    131 to the page where the link is written which will be selected. So for example, within
    132 a sub-hierarchy, a sibling page will be targeted in preference to a toplevel page.
     137For resolving the location of a wiki link, it's the target page closest in the hierarchy to the page where the link is written which will be selected. So for example, within a sub-hierarchy, a sibling page will be targeted in preference to a top-level page.
    133138This makes it easy to copy or move pages to a sub-hierarchy by [[WikiNewPage#renaming|renaming]] without having to adapt the links.
    134139
    135 In order to link explicitly to a [=#toplevel toplevel] Wiki page,
    136 use the `wiki:/` prefix.
    137 Be careful **not** to use the `/` prefix alone, as this corresponds to the
    138 [#Server-relativelinks] syntax and with such a link you will lack the `/wiki/`
    139 part in the resulting URL.
    140 
    141 ''(Changed in 0.11)'' Note that in Trac 0.10, using e.g. `[../newticket]`  may have worked for linking to the `/newticket` top-level URL, but since 0.11, such a link will stay in the wiki namespace and therefore link to a sibling page.
    142 See [#Server-relativelinks] for the new syntax.
    143 
    144 === Link anchors ===
    145 
    146 To create a link to a specific anchor in a page, use '#':
     140To link explicitly to a [=#toplevel toplevel] Wiki page, use the `wiki:/` prefix. Be careful **not** to use the `/` prefix alone, as this corresponds to the [#Server-relativelinks] syntax and with such a link you will lack the `/wiki/` part in the resulting URL. A link such as `[../newticket]` will stay in the wiki namespace and therefore link to a sibling page.
     141
     142=== Link anchors
     143
     144To create a link to a specific anchor in a page, use `#`:
    147145{{{
    148146 [#Linkanchors Link anchors] or [[#Linkanchors|Link anchors]]
     
    150148  [#Linkanchors Link anchors] or [[#Linkanchors|Link anchors]]
    151149
    152 Hint: when you move your mouse over the title of a section, a '¶' character will be displayed. This is a link to that specific section and you can use this to copy the `#...` part inside a relative link to an anchor.
    153 
    154 To create a link to the first or last occurrence of a term on a page, use a ''pseudo anchor'' starting with '#/' or '#?':
     150To create an anchor in a page, use `[=#...]`:
     151{{{
     152 [=#myanchor my anchor] or empty form [=#myanchor]
     153}}}
     154 [=#myanchor my anchor] or empty form [=#myanchor]
     155
     156Hint: when you hover your mouse over the title of a section, a '¶' character will be displayed. This is a link to that specific section and you can use this to copy the `#...` part inside a relative link to an anchor.
     157
     158To create a link to the first or last occurrence of a term on a page, use a ''pseudo anchor'' starting with `#/` or `#?`:
    155159{{{
    156160 [#/Milestone first occurrence of Milestone] or
     
    159163 [#/Milestone first occurrence of Milestone] or
    160164 [#?Milestone last occurrence of Milestone]
    161 This will also highlight all other matches on the linked page. By default only case sensitive matches are considered. To include case insensitive matches append '/i':
     165This will also highlight all other matches on the linked page. By default only case sensitive matches are considered. To include case insensitive matches append `/i`:
    162166{{{
    163167 [#/Milestone/i first occurrence of Milestone or milestone] or
     
    178182(Hint: The line numbers displayed in the source browser are links to anchors on the respective lines.)
    179183
    180 Since such links become outdated when the file changes, it can be useful to link using a '#/' pseudo anchor instead:
     184Since such links become outdated when the file changes, it can be useful to link using a `#/` pseudo anchor instead:
    181185{{{
    182186 [trac:source:trunk/trac/wiki/api.py#/IWikiSyntaxProvider IWikiSyntaxProvider] or
     
    186190 [trac:source:trunk/trac/env.py#/ISystemInfoProvider ISystemInfoProvider]
    187191
    188 === InterWiki links ===
    189 
    190 Other prefixes can be defined freely and made to point to resources in other Web applications. The definition of those prefixes as well as the URLs of the corresponding Web applications is defined in a special Wiki page, the InterMapTxt page. Note that while this could be used to create links to other Trac environments, there's a more specialized way to register other Trac environments which offers greater flexibility.
    191 
    192 === InterTrac links ===
     192=== InterWiki links
     193
     194Other prefixes can be defined freely and made to point to resources in other Web applications. The definition of those prefixes as well as the URLs of the corresponding Web applications is defined in a special Wiki page, the InterMapTxt page. Note that while this could be used to create links to other Trac environments, there is a more specialized way to register other Trac environments which offers greater flexibility.
     195
     196=== InterTrac links
    193197
    194198This can be seen as a kind of InterWiki link specialized for targeting other Trac projects.
    195199
    196 Any type of Trac link can be written in one Trac environment and actually refer to resources in another Trac environment. All that is required is to prefix the Trac link with the name of the other Trac environment followed by a colon. The other Trac environment must be registered on the InterTrac page.
    197 
    198 A distinctive advantage of InterTrac links over InterWiki links is that the shorthand form of Trac links (e.g. `{}`, `r`, `#`) can also be used. For example if T was set as an alias for Trac, links to Trac tickets can be written #T234, links to Trac changesets can be written [trac 1508].
    199 See InterTrac for the complete details.
    200 
    201 === Server-relative links ===
    202 
    203 It is often useful to be able to link to objects in your project that
    204 have no built-in Trac linking mechanism, such as static resources, `newticket`,
    205 a shared `/register` page on the server, etc.
    206 
    207 To link to resources inside the project, use either an absolute path from the project root,
    208 or a relative link from the URL of the current page (''Changed in 0.11''):
     200Any type of Trac link can be written in one Trac environment and actually refer to resources in another Trac environment. All that is required is to prefix the Trac link with the name of the other Trac environment followed by a colon. The other Trac environment must be registered on the InterTrac page.
     201
     202A distinct advantage of InterTrac links over InterWiki links is that the shorthand form of Trac links can also be used, such as `{}`, `r`, `#`. For example, if T was set as an alias for Trac, then links to Trac tickets can be written as #T234, and links to Trac changesets can be written as [trac 1508].
     203See InterTrac for the complete details.
     204
     205=== Server-relative links
     206
     207It is often useful to be able to link to objects in your project that have no built-in Trac linking mechanism, such as static resources, `newticket`, a shared `/register` page on the server, etc.
     208
     209To link to resources inside the project, use either an absolute path from the project root, or a relative link from the URL of the current page (''Changed in 0.11''):
    209210
    210211{{{
     
    224225Display: [//register Register Here] or [[//register|Register Here]]
    225226
    226 === Quoting space in TracLinks ===
    227 
    228 Immediately after a TracLinks prefix, targets containing space characters should
    229 be enclosed in a pair of quotes or double quotes.
     227=== Quoting space in TracLinks
     228
     229Immediately after a TracLinks prefix, targets containing space characters should be enclosed in a pair of quotes or double quotes.
    230230Examples:
    231231 * !wiki:"The whitespace convention"
    232232 * !attachment:'the file.txt' or
    233  * !attachment:"the file.txt" 
    234  * !attachment:"the file.txt:ticket:123" 
     233 * !attachment:"the file.txt"
     234 * !attachment:"the file.txt:ticket:123"
    235235
    236236Note that by using [trac:WikiCreole] style links, it's quite natural to write links containing spaces:
     
    238238 * ![[attachment:the file.txt]]
    239239
    240 === Escaping Links ===
     240=== Escaping Links
    241241
    242242To prevent parsing of a !TracLink, you can escape it by preceding it with a '!' (exclamation mark).
     
    250250 ![42] is not a link either.
    251251
    252 
    253 === Parameterized Trac links ===
     252=== Parameterized Trac links
    254253
    255254Many Trac resources have more than one way to be rendered, depending on some extra parameters. For example, a Wiki page can accept a `version` or a `format` parameter, a report can make use of dynamic variables, etc.
     
    261260 - `[/newticket?summary=Add+short+description+here create a ticket with URL with spaces]`
    262261
    263 
    264 == TracLinks Reference ==
     262== TracLinks Reference
     263
    265264The following sections describe the individual link types in detail, as well as notes on advanced usage of links.
    266265
    267 === attachment: links ===
     266=== attachment: links
    268267
    269268The link syntax for attachments is as follows:
    270  * !attachment:the_file.txt creates a link to the attachment the_file.txt of the current object
     269 * !attachment:the_file.txt creates a link to the attachment the_file.txt of the current page
    271270 * !attachment:the_file.txt:wiki:MyPage creates a link to the attachment the_file.txt of the !MyPage wiki page
    272271 * !attachment:the_file.txt:ticket:753 creates a link to the attachment the_file.txt of the ticket 753
    273272
    274 Note that the older way, putting the filename at the end, is still supported: !attachment:ticket:753:the_file.txt.
     273Note that the older way, putting the filename at the end, is still supported: !attachment:ticket:753:the_file.txt, but is not recommended.
    275274
    276275If you'd like to create a direct link to the content of the attached file instead of a link to the attachment page, simply use `raw-attachment:` instead of `attachment:`.
    277276
    278 This can be useful for pointing directly to an HTML document, for example. Note that for this use case, you'd have to allow the web browser to render the content by setting `[attachment] render_unsafe_content = yes` (see TracIni#attachment-section). Caveat: only do that in environments for which you're 100% confident you can trust the people who are able to attach files, as otherwise this would open up your site to [wikipedia:Cross-site_scripting cross-site scripting] attacks.
     277This can be useful for pointing directly to an HTML document, for example. Note that for this use case, you'd have to allow the web browser to render the content by setting [[TracIni#attachment-render_unsafe_content-option|"[attachment] render_unsafe_content"]] = `enabled`. Caveat: only do that in environments for which you're 100% confident you can trust the people who are able to attach files, as this opens up your site to [https://en.wikipedia.org/wiki/Cross-site_scripting cross-site scripting] attacks.
    279278
    280279See also [#export:links].
    281280
    282 === comment: links ===
     281=== comment: links
    283282
    284283When you're inside a given ticket, you can simply write e.g. !comment:3 to link to the third change comment.
    285284It is possible to link to a comment of a specific ticket from anywhere using one of the following syntax:
    286  - `comment:3:ticket:123` 
     285 - `comment:3:ticket:123`
    287286 - `ticket:123#comment:3` (note that you can't write `#123#!comment:3`!)
    288287It is also possible to link to the ticket's description using one of the following syntax:
     
    291290 - `ticket:123#comment:description`
    292291
    293 === htdocs: links ===
     292=== htdocs: links
    294293
    295294Use `htdocs:path/to/file` to reference files in the `htdocs` directory of the Trac environment, the [TracEnvironment#DirectoryStructure web resource directory].
    296295
    297 === query: links ===
     296=== query: links
    298297
    299298See TracQuery#UsingTracLinks and [#ticket:links].
    300299
    301 === search: links ===
    302 
    303 See TracSearch#SearchLinks
    304 
    305 === ticket: links ===
    306  ''alias:'' `bug:`
     300=== search: links
     301
     302See TracSearch#SearchTracLinks
     303
     304=== ticket: links
     305
     306 ''aliases:'' `bug:`, `issue:`
    307307
    308308Besides the obvious `ticket:id` form, it is also possible to specify a list of tickets or even a range of tickets instead of the `id`. This generates a link to a custom query view containing this fixed set of tickets.
    309309
    310 Example: 
     310Example:
    311311 - `ticket:5000-6000`
    312312 - `ticket:1,150`
    313313
    314 ''(since Trac 0.11)''
    315 
    316 === timeline: links ===
    317 
    318 Links to the timeline can be created by specifying a date in the ISO:8601 format. The date can be optionally followed by a time specification. The time is interpreted as being UTC time, but alternatively you can specify your local time, followed by your timezone if you don't want to compute the UTC time.
     314=== timeline: links
     315
     316Links to the timeline can be created by specifying a date in the ISO:8601 format. The date can be optionally followed by a time specification. The time is interpreted as being UTC time, but if you don't want to compute the UTC time, you can specify a local time followed by your timezone offset relative to UTC.
    319317
    320318Examples:
     
    323321 - `timeline:2008-01-29T15:48Z`
    324322 - `timeline:2008-01-29T16:48+01`
    325 
    326 ''(since Trac 0.11)''
    327 
    328 === wiki: links ===
     323 - `timeline:2008-01-29T16:48+0100`
     324 - `timeline:2008-01-29T16:48+01:00`
     325
     326=== wiki: links
    329327
    330328See WikiPageNames and [#QuotingspaceinTracLinks quoting space in TracLinks] above. It is possible to create a link to a specific page revision using the syntax WikiStart@1.
    331329
    332 === Version Control related links ===
    333 
    334 It should be noted that multiple repository support works by creating a kind of virtual namespace for versioned files in which the toplevel folders correspond to the repository names. Therefore, in presence of multiple repositories, a ''/path'' specification in the syntax of links detailed below should start with the name of the repository. If omitted, the default repository is used. In case a toplevel folder of the default repository has the same name as a repository, the latter "wins". One can always access such folder by fully qualifying it (the default repository can be an alias of a named repository, or conversely, it is always possible to create an alias for the default repository, ask your Trac administrator).
     330=== Version Control system links
     331
     332It should be noted that multiple repository support works by creating a kind of virtual namespace for versioned files in which the toplevel folders correspond to the repository names. Therefore, in presence of multiple repositories, a ''/path'' specification in the syntax of links detailed below should start with the name of the repository. If omitted, the default repository is used. In case a toplevel folder of the default repository has the same name as a repository, the link directs to the latter. One can always access such folder by fully qualifying it. The default repository can be an alias of a named repository, or conversely, there may be one or more aliases for the default repository, ask your Trac administrator.
    335333
    336334For example, `source:/trunk/COPYING` targets the path `/trunk/COPYING` in the default repository, whereas `source:/projectA/trunk/COPYING` targets the path `/trunk/COPYING` in the repository named `projectA`. This can be the same file if `'projectA'` is an alias to the default repository or if `''` (the default repository) is an alias to `'projectA'`.
    337335
    338 ==== source: links ====
     336==== source: links
     337
    339338 ''aliases:'' `browser:`, `repos:`
    340339
    341 The default behavior for a source:/some/path link is to open the browser in that directory directory
    342 if the path points to a directory or to show the latest content of the file.
     340The default behavior for a `source:/some/path link` is to open the browser in that directory directory if the path points to a directory or to show the latest content of the file.
    343341
    344342It's also possible to link directly to a specific revision of a file like this:
    345343 - `source:/some/file@123` - link to the file's revision 123
    346344 - `source:/some/file@head` - link explicitly to the latest revision of the file
     345 - `source:/some/file@named-branch` - link to latest revision of the specified file in `named-branch` (DVCS such as Git or Mercurial)
    347346
    348347If the revision is specified, one can even link to a specific line number:
    349348 - `source:/some/file@123#L10`
    350349 - `source:/tag/0.10@head#L10`
     350 - `source:/some/file@named-branch#L10`
    351351
    352352Finally, one can also highlight an arbitrary set of lines:
    353  - `source:/some/file@123:10-20,100,103#L99` - highlight lines 10 to 20, and lines 100 and 103.
    354    ''(since 0.11)''
     353 - `source:/some/file@123:10-20,100,103#L99` - highlight lines 10 to 20, and lines 100 and 103, and target line 99
     354 - or without version number (the `@` is still needed): `source:/some/file@:10-20,100,103#L99`. Version can be omitted when the path is pointing to a source file that will no longer change (like `source:/tags/...`), otherwise it's better to specify which lines of //which version// of the file you're talking about.
    355355
    356356Note that in presence of multiple repositories, the name of the repository is simply integrated in the path you specify for `source:` (e.g. `source:reponame/trunk/README`). ''(since 0.12)''
    357357
    358 ==== export: links ====
     358==== export: links
    359359
    360360To force the download of a file in the repository, as opposed to displaying it in the browser, use the `export` link.  Several forms are available:
     
    362362 * `export:123:/some/file` - get revision 123 of the specified file
    363363 * `export:/some/file@123` - get revision 123 of the specified file
    364 
    365 This can be very useful for displaying XML or HTML documentation with correct stylesheets and images, in case that has been checked in into the repository. Note that for this use case, you'd have to allow the web browser to render the content by setting `[browser] render_unsafe_content = yes` (see TracIni#browser-section), otherwise Trac will force the files to be downloaded as attachments for security concerns.
     364 * `export:/some/file@named-branch` - get latest revision of the specified file in `named-branch` (DVCS such as Git or Mercurial).
     365
     366This can be very useful for displaying XML or HTML documentation with correct stylesheets and images, in case that has been checked in into the repository. Note that for this use case, you'd have to allow the web browser to render the content by setting [[TracIni#browser-render_unsafe_content-option|"[browser] render_unsafe_content"]] = `enabled`, otherwise Trac will force the files to be downloaded as attachments for security concerns.
    366367
    367368If the path is to a directory in the repository instead of a specific file, the source browser will be used to display the directory (identical to the result of `source:/some/dir`).
    368369
    369 ==== log: links ====
     370==== log: links
    370371
    371372The `log:` links are used to display revision ranges. In its simplest form, it can link to the latest revisions of the specified path, but it can also support displaying an arbitrary set of revisions.
     
    373374 - `log:/trunk/tools` - the latest revisions in `trunk/tools`
    374375 - `log:/trunk/tools@10000` - the revisions in `trunk/tools` starting from  revision 10000
    375  - `log:@20788,20791:20795` - list revision 20788 and the revisions from 20791 to 20795 
     376 - `log:@20788,20791:20795` - list revision 20788 and the revisions from 20791 to 20795
    376377 - `log:/trunk/tools@20788,20791:20795` - list revision 20788 and the revisions from 20791 to 20795 which affect the given path
     378 - `log:/tools@named-branch` - the revisions in `tools` starting from the latest revision in `named-branch` (DVCS such as Git or Mercurial)
    377379
    378380There are short forms for revision ranges as well:
     
    383385Finally, note that in all of the above, a revision range can be written either as `x:y` or `x-y`.
    384386
    385 In the presence of multiple repositories, the name of the repository should be specified as the first part of the path, e.g. `log:repos/branches` or `[20-40/repos]`.
     387==== Multi-repository links
     388
     389In the presence of multiple repositories, the name of the repository should be specified as the first part of the path:
     390- `log:repos/branch`
     391- `[20-40/repos]`
     392- `r20/repos`
    386393
    387394----
    388395See also: WikiFormatting, TracWiki, WikiPageNames, InterTrac, InterWiki
    389