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gitk: Honor TMPDIR when viewing external diffs

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gitk fails to show diffs when browsing a read-only repository.
This is due to gitk's assumption that the current directory is always
writable.

Teach gitk to honor either the GITK_TMPDIR or TMPDIR environment
variables.  This allows users to override the default location
used when writing temporary files.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
David Aguilar 2014-06-13 14:13:37 -07:00 committed by Paul Mackerras
parent 17f9836c8a
commit c7664f1a8c
1 changed files with 9 additions and 2 deletions
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gitk
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@ -3493,10 +3493,17 @@ proc flist_hl {only} {
}
proc gitknewtmpdir {} {
global diffnum gitktmpdir gitdir
global diffnum gitktmpdir gitdir env
if {![info exists gitktmpdir]} {
set gitktmpdir [file join $gitdir [format ".gitk-tmp.%s" [pid]]]
if {[info exists env(GITK_TMPDIR)]} {
set tmpdir $env(GITK_TMPDIR)
} elseif {[info exists env(TMPDIR)]} {
set tmpdir $env(TMPDIR)
} else {
set tmpdir $gitdir
}
set gitktmpdir [file join $tmpdir [format ".gitk-tmp.%s" [pid]]]
if {[catch {file mkdir $gitktmpdir} err]} {
error_popup "[mc "Error creating temporary directory %s:" $gitktmpdir] $err"
unset gitktmpdir