Sometimes you need to know not only what lines have changed, but also who exactly changed specific lines in a file. That's when the→ command, sometimes also referred to as annotate command comes in handy.
This command lists, for every line in a file, the author and the revision the line was changed.
By default the blame file is viewed using TortoiseGitBlame, which highlights the different revisions to make it easier to read.
TortoiseGitBlame, which is included with TortoiseGit. When you hover the mouse over a line in the blame info column, all lines with the same revision are shown with a darker background. Lines from other revisions which were changed by the same author are shown with a light background. The colouring may not work as clearly if you have your display set to 256 colour mode.
If you left click on a line, all lines with the same revision are highlighted, and lines from other revisions by the same author are highlighted in a lighter colour. This highlighting is sticky, allowing you to move the mouse without losing the highlights. Click on that revision again to turn off highlighting.
The revision comments (log message) are shown in a hint box whenever the mouse hovers over the blame info column. If you want to copy the log message for that revision, use the context menu which appears when you right click on the blame info column.
You can search within the Blame report using→ . This allows you to search for revision numbers, authors and the content of the file itself. Log messages are not included in the search - you should use the Log Dialog to search those.
You can also jump to a specific line number using→ .