When first doing a merge in git-gui, the "Visualize Merge" button is
quite helpful to visualize the changes due to a merge.
But once the merge is complete, there's not a similarly convenient
way to recreate that merge view in gitk.
This commit adds to gitk the ability to right-click on a merge commit and
bring up a new gitk window displaying only those commits involved in
the merge.
When right-clicking on a non-merge commit, this option is grayed out. This
patch also supports correct visualization of octopus merges
Signed-off-by: Jason Holden <jason.k.holden.swdev@xxxxxxxxx>
---
gitk | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/gitk b/gitk
index 379582a..17e1fcb 100755
--- a/gitk
+++ b/gitk
@@ -2551,6 +2551,7 @@ proc makewindow {} {
{mc "Compare with marked commit" command compare_commits}
{mc "Diff this -> marked commit" command {diffvsmark 0}}
{mc "Diff marked commit -> this" command {diffvsmark 1}}
+ {mc "Visualize this merge" command visualize_merge}
}
$rowctxmenu configure -tearoff 0
@@ -2590,6 +2591,31 @@ proc makewindow {} {
$diff_menu configure -tearoff 0
}
+# Return the number of parents for a given sha1 id
+proc get_numparents_from_id {id} {
+ global parentlist
+ set row [rowofcommit $id]
+ return [llength [lindex $parentlist $row]]
+}
+
+proc visualize_merge {} {
+ global parents currentid parentlist
+ global rowmenuid
+
+ set num_parents [get_numparents_from_id $rowmenuid]
+ set row [rowofcommit $rowmenuid]
+
+ if {$num_parents >= 2} {
+ set revlist $rowmenuid
+ for { set i 1 } {$i < $num_parents} {incr i} {
+
+ set revlist "$revlist [lindex $parentlist $row 0]..[lindex $parentlist $row $i] $rowmenuid"
+ }
+
+ eval exec gitk $revlist
+ }
+}
+
# Windows sends all mouse wheel events to the current focused window, not
# the one where the mouse hovers, so bind those events here and redirect
# to the correct window
@@ -8577,6 +8603,13 @@ proc rowmenu {x y id} {
$menu entryconfigure 9 -state $mstate
$menu entryconfigure 10 -state $mstate
$menu entryconfigure 11 -state $mstate
+
+ # Disable visualize-merge on only one parent
+ if {[get_numparents_from_id $id] == 1} {
+ $menu entryconfigure 15 -state disabled
+ } else {
+ $menu entryconfigure 15 -state normal
+ }
} else {
set menu $fakerowmenu
}
--
1.8.1.rc3.28.g0ab5d1f
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