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git-gui: Use git diff --submodule when available

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Doing so is much faster and gives the same output.
Here are some numbers:

  $ time git submodule summary
  real	0m0.219s
  user	0m0.050s
  sys	0m0.111s

  $ time git diff --submodule
  real	0m0.012s
  user	0m0.003s
  sys	0m0.009s

Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Jens Lehmann 2010-01-23 23:04:12 +01:00 committed by Shawn O. Pearce
parent 87cd09f43e
commit a9ae14a1c5
1 changed files with 13 additions and 4 deletions
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17
lib/diff.tcl
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@ -281,6 +281,15 @@ proc start_show_diff {cont_info {add_opts {}}} {
}
}
if {[string match {160000 *} [lindex $s 2]]
|| [string match {160000 *} [lindex $s 3]]} {
set is_submodule_diff 1
if {[git-version >= "1.6.6"]} {
lappend cmd --submodule
}
}
lappend cmd -p
lappend cmd --no-color
if {$repo_config(gui.diffcontext) >= 1} {
@ -296,9 +305,7 @@ proc start_show_diff {cont_info {add_opts {}}} {
lappend cmd $path
}
if {[string match {160000 *} [lindex $s 2]]
|| [string match {160000 *} [lindex $s 3]]} {
set is_submodule_diff 1
if {$is_submodule_diff && [git-version < "1.6.6"]} {
if {$w eq $ui_index} {
set cmd [list submodule summary --cached -- $path]
} else {
@ -387,7 +394,9 @@ proc read_diff {fd cont_info} {
}
} elseif {$is_submodule_diff} {
if {$line == ""} continue
if {[regexp {^\* } $line]} {
if {[regexp {^Submodule } $line]} {
set tags d_@
} elseif {[regexp {^\* } $line]} {
set line [string replace $line 0 1 {Submodule }]
set tags d_@
} else {