+gui.fastcopyblame::
+ If true, 'git gui blame' uses '-C' instead of '-C -C' for original
+ location detection. It makes blame significantly faster on huge
+ repositories at the expense of less thorough copy detection.
+
+gui.copyblamethreshold::
+ Specifies the theshold to use in 'git gui blame' original location
+ detection, measured in alphanumeric characters. See the
+ linkgit:git-blame[1] manual for more information on copy detection.
+
+gui.blamehistoryctx::
+ Specifies the radius of history context in days to show in
+ linkgit:gitk[1] for the selected commit, when the `Show History
+ Context` menu item is invoked from 'git gui blame'. If this
+ variable is set to zero, the whole history is shown.
+