Trac has a built-in functionality for visualizing "diffs", or changes to files.
Trac has a built-in functionality for visualizing "diffs", or changes to files.
There are different kinds of ''change sets''. Some correspond to revisions made in the repositories, others aggregate changes made in several revisions. Ultimately, any kind of difference can be shown.
There are different kinds of _change sets_. Some correspond to revisions made in the repositories, others aggregate changes made in several revisions. Ultimately, any kind of difference can be shown.
The changeset view consists of two parts, the ''header'' and the ''diff views''.
The changeset view consists of two parts, the _header_ and the _diff views_.
== Changeset Header
== Changeset Header
...
@@ -20,53 +20,53 @@ Here you will find information such as:
...
@@ -20,53 +20,53 @@ Here you will find information such as:
* Location — Parent directory of all files affected by this changeset
* Location — Parent directory of all files affected by this changeset
* Files — A list of files affected by this changeset
* Files — A list of files affected by this changeset
If more than one revision is involved in the set of changes being displayed, the ''Timestamp'', ''Author'' and ''Message'' fields will not be shown.
If more than one revision is involved in the set of changes being displayed, the _Timestamp_, _Author_ and _Message_ fields will not be shown.
A colored rectangle indicates how the file is affected by the changeset:
A colored rectangle indicates how the file is affected by the changeset:
[[span(style=background:#ccc;border:1px solid #999;font-size:80%;margin-right:.5em,'' '')]] Gray: Moved \\
[[span(style=background:#ccc;border:1px solid #999;font-size:80%;margin-right:.5em,_ _)]] Gray: Moved \\
The color legend is located below the header as a reminder.
The color legend is located below the header as a reminder.
== Diff Views
== Diff Views
Below the header is the main part of the changeset, the diff view. Each file is shown in a separate section, each of which contains only the regions of the file that are affected by the changeset. There are two different styles to display the diffs: ''inline'' or ''side-by-side''. You can switch between the styles using the preferences form:
Below the header is the main part of the changeset, the diff view. Each file is shown in a separate section, each of which contains only the regions of the file that are affected by the changeset. There are two different styles to display the diffs: _inline_ or _side-by-side_. You can switch between the styles using the preferences form:
* The ''inline'' style shows the changed regions of a file underneath each other. A region removed from the file will be colored red, an added region will be colored green. If a region was modified, the old version is displayed above the new version. Line numbers indicate the exact position of the change in both the old and the new version of the file.
* The _inline_ style shows the changed regions of a file underneath each other. A region removed from the file will be colored red, an added region will be colored green. If a region was modified, the old version is displayed above the new version. Line numbers indicate the exact position of the change in both the old and the new version of the file.
* The ''side-by-side'' style shows the old version on the left and the new version on the right and this will typically require more screen width than the inline style. Added and removed regions will be colored in the same way as with the inline style (green and red), and modified regions will have a yellow background.
* The _side-by-side_ style shows the old version on the left and the new version on the right and this will typically require more screen width than the inline style. Added and removed regions will be colored in the same way as with the inline style (green and red), and modified regions will have a yellow background.
In addition, various advanced options are available in the preferences form for adjusting the display of the diffs:
In addition, various advanced options are available in the preferences form for adjusting the display of the diffs:
* You can set how many lines are displayed before and after every change; if the value ''all'' is used, then the full file will be shown.
* You can set how many lines are displayed before and after every change; if the value _all_ is used, then the full file will be shown.
* You can toggle whether blank lines, case changes and white space changes are ignored, thereby letting you find the functional changes more quickly.
* You can toggle whether blank lines, case changes and white space changes are ignored, thereby letting you find the functional changes more quickly.
== The Different Ways to Get a Diff
== The Different Ways to Get a Diff
=== Examining a Changeset
=== Examining a Changeset
When viewing a repository check-in, such as when following a changeset [wiki:TracLinks link] or a changeset event in the [wiki:TracTimeline timeline], Trac will display the exact changes made by the check-in.
When viewing a repository check-in, such as when following a changeset [link](./TracLinks) or a changeset event in the [timeline](./TracTimeline), Trac will display the exact changes made by the check-in.
There will be also navigation links to the ''Previous Changeset'' to and ''Next Changeset''.
There will be also navigation links to the _Previous Changeset_ to and _Next Changeset_.
=== Examining Differences Between Revisions
=== Examining Differences Between Revisions
Often you want to look at changes made on a file or on a directory spanning multiple revisions. The easiest way to get there is from the TracRevisionLog, where you can select the ''old'' and the ''new'' revisions of the file or directory, and then click the ''View changes'' button.
Often you want to look at changes made on a file or on a directory spanning multiple revisions. The easiest way to get there is from the TracRevisionLog, where you can select the _old_ and the _new_ revisions of the file or directory, and then click the _View changes_ button.
=== Examining Differences Between Branches
=== Examining Differences Between Branches
One of the core features of version control systems is the possibility to work simultaneously on different ''Lines of Developments'', commonly called "branches". Trac enables you to examine the exact differences between such branches.
One of the core features of version control systems is the possibility to work simultaneously on different _Lines of Developments_, commonly called "branches". Trac enables you to examine the exact differences between such branches.
Using the '''View changes ...''' button in the TracBrowser allows you to enter ''From:'' and ''To:'' path/revision pairs. The resulting set of differences consist of the changes that should be applied to the ''From:'' content to get to the ''To:'' content.
Using the **View changes ...** button in the TracBrowser allows you to enter _From:_ and _To:_ path/revision pairs. The resulting set of differences consist of the changes that should be applied to the _From:_ content to get to the _To:_ content.
For convenience, it is possible to invert the roles of the ''old'' and the ''new'' path/revision pairs by clicking the ''Reverse Diff'' link on the changeset page.
For convenience, it is possible to invert the roles of the _old_ and the _new_ path/revision pairs by clicking the _Reverse Diff_ link on the changeset page.
=== Checking the Last Change
=== Checking the Last Change
Another way to examine changes is to use the ''Last Change'' link provided by the TracBrowser.
Another way to examine changes is to use the _Last Change_ link provided by the TracBrowser.
This link will take you to the last change that was made on that path. From there, you can use the ''Previous Change'' and ''Next Change'' links to traverse the change history of the file or directory.
This link will take you to the last change that was made on that path. From there, you can use the _Previous Change_ and _Next Change_ links to traverse the change history of the file or directory.
