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-rwxr-xr-xgitk91
1 files changed, 84 insertions, 7 deletions
diff --git a/gitk b/gitk
index dd8f1f1..2aa970d 100755
--- a/gitk
+++ b/gitk
@@ -2054,7 +2054,6 @@ proc processgroup {} {
set pnum 0
foreach p $parents($id) {
set startline [expr {$grouplinestart + $diffoffset($p)}]
- set offset($p) $diffoffset($p)
set ol $startline
set nl $grouplinestart
if {[info exists grouphunks($p)]} {
@@ -2098,9 +2097,8 @@ proc processgroup {} {
set events [lsort -integer -index 0 $events]
set nevents [llength $events]
set nmerge $nparents($diffmergeid)
- set i 0
set l $grouplinestart
- while {$i < $nevents} {
+ for {set i 0} {$i < $nevents} {set i $j} {
set nl [lindex $events $i 0]
while {$l < $nl} {
$ctext insert end " $filelines($id,$f,$l)\n"
@@ -2129,7 +2127,9 @@ proc processgroup {} {
}
set nlc [expr {$enl - $l}]
set ncol mresult
+ set bestpn -1
if {[llength $active] == $nmerge - 1} {
+ # no diff for one of the parents, i.e. it's identical
for {set pnum 0} {$pnum < $nmerge} {incr pnum} {
if {![info exists delta($pnum)]} {
if {$pnum < $mergemax} {
@@ -2140,11 +2140,25 @@ proc processgroup {} {
break
}
}
+ } elseif {[llength $active] == $nmerge} {
+ # all parents are different, see if one is very similar
+ set bestsim 30
+ for {set pnum 0} {$pnum < $nmerge} {incr pnum} {
+ set sim [similarity $pnum $l $nlc $f \
+ [lrange $events $i [expr {$j-1}]]]
+ if {$sim > $bestsim} {
+ set bestsim $sim
+ set bestpn $pnum
+ }
+ }
+ if {$bestpn >= 0} {
+ lappend ncol m$bestpn
+ }
}
set pnum -1
foreach p $parents($id) {
incr pnum
- if {![info exists delta($pnum)]} continue
+ if {![info exists delta($pnum)] || $pnum == $bestpn} continue
set olc [expr {$nlc + $delta($pnum)}]
set ol [expr {$l + $diffoffset($p)}]
incr diffoffset($p) $delta($pnum)
@@ -2154,11 +2168,35 @@ proc processgroup {} {
incr ol
}
}
- for {} {$nlc > 0} {incr nlc -1} {
+ set endl [expr {$l + $nlc}]
+ if {$bestpn >= 0} {
+ # show this pretty much as a normal diff
+ set p [lindex $parents($id) $bestpn]
+ set ol [expr {$l + $diffoffset($p)}]
+ incr diffoffset($p) $delta($bestpn)
+ unset delta($bestpn)
+ for {set k $i} {$k < $j} {incr k} {
+ set e [lindex $events $k]
+ if {[lindex $e 2] != $bestpn} continue
+ set nl [lindex $e 0]
+ set ol [expr {$ol + $nl - $l}]
+ for {} {$l < $nl} {incr l} {
+ $ctext insert end "+$filelines($id,$f,$l)\n" $ncol
+ }
+ set c [lindex $e 3]
+ for {} {$c > 0} {incr c -1} {
+ $ctext insert end "-$filelines($p,$f,$ol)\n" m$bestpn
+ incr ol
+ }
+ set nl [lindex $e 1]
+ for {} {$l < $nl} {incr l} {
+ $ctext insert end "+$filelines($id,$f,$l)\n" mresult
+ }
+ }
+ }
+ for {} {$l < $endl} {incr l} {
$ctext insert end "+$filelines($id,$f,$l)\n" $ncol
- incr l
}
- set i $j
}
while {$l < $grouplineend} {
$ctext insert end " $filelines($id,$f,$l)\n"
@@ -2167,6 +2205,45 @@ proc processgroup {} {
$ctext conf -state disabled
}
+proc similarity {pnum l nlc f events} {
+ global diffmergeid parents diffoffset filelines
+
+ set id $diffmergeid
+ set p [lindex $parents($id) $pnum]
+ set ol [expr {$l + $diffoffset($p)}]
+ set endl [expr {$l + $nlc}]
+ set same 0
+ set diff 0
+ foreach e $events {
+ if {[lindex $e 2] != $pnum} continue
+ set nl [lindex $e 0]
+ set ol [expr {$ol + $nl - $l}]
+ for {} {$l < $nl} {incr l} {
+ incr same [string length $filelines($id,$f,$l)]
+ incr same
+ }
+ set oc [lindex $e 3]
+ for {} {$oc > 0} {incr oc -1} {
+ incr diff [string length $filelines($p,$f,$ol)]
+ incr diff
+ incr ol
+ }
+ set nl [lindex $e 1]
+ for {} {$l < $nl} {incr l} {
+ incr diff [string length $filelines($id,$f,$l)]
+ incr diff
+ }
+ }
+ for {} {$l < $endl} {incr l} {
+ incr same [string length $filelines($id,$f,$l)]
+ incr same
+ }
+ if {$same == 0} {
+ return 0
+ }
+ return [expr {200 * $same / (2 * $same + $diff)}]
+}
+
proc startdiff {ids} {
global treediffs diffids treepending diffmergeid