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git/merge: correctly preserve permissions when merging

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when doing a 3 way merge of a file, we also need to do a
merge of the permission bits to avoid clobberign them.
This commit is contained in:
Ori Bernstein 2022-05-15 16:29:48 +00:00
parent 1470d22cdb
commit 5dd9b370a0
1 changed files with 14 additions and 4 deletions
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18
sys/lib/git/common.rc
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@ -29,13 +29,23 @@ fn drop {
' $* ' $*
} }
fn present { fn mergeperm {
if(~ $1 /dev/null && cmp $2 $3>/dev/null) if(~ $1 /dev/null && cmp $2 $3>/dev/null)
status=gone status=gone
if not if (~ $3 /dev/null && cmp $1 $2>/dev/null) if not if (~ $3 /dev/null && cmp $1 $2>/dev/null)
status=gone status=gone
if not if not {
mergedperms='-x'
if(test -x $2){
if(test -x $1 -a -x $3)
mergedperms='+x'
}
if not{
if(test -x $1 -o -x $3)
mergedperms='+x'
}
status=() status=()
}
} }
fn whoami{ fn whoami{
@ -73,13 +83,13 @@ fn merge1 {@{
base=/dev/null base=/dev/null
if(! test -f $theirs) if(! test -f $theirs)
theirs=/dev/null theirs=/dev/null
mkdir -p `{basename -d $tmp}
if(! ape/diff3 -3 -m $ours $base $theirs > $tmp) if(! ape/diff3 -3 -m $ours $base $theirs > $tmp)
echo merge needed: $out >[1=2] echo merge needed: $out >[1=2]
if(present $ours $base $theirs){ if(mergeperm $ours $base $theirs){
mv $tmp $out mv $tmp $out
git/add $out git/add $out
chmod $mergedperms $out
} }
if not { if not {
rm -f $tmp $out rm -f $tmp $out