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ed93b449c5
The three-way merge complained unconditionally when a path that does not exist in the index is involved in a merge when it existed in the working tree. If we are merging an old version that had that path tracked, but the path is not tracked anymore, and if we are merging that old version in, the result will be that the path is not tracked. In that case we should not complain. Signed-off-by: Junio C Hamano <junkio@cox.net>
135 lines
3.1 KiB
Bash
Executable File
135 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) Linus Torvalds, 2005
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#
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# This is the git per-file merge script, called with
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#
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# $1 - original file SHA1 (or empty)
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# $2 - file in branch1 SHA1 (or empty)
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# $3 - file in branch2 SHA1 (or empty)
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# $4 - pathname in repository
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# $5 - original file mode (or empty)
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# $6 - file in branch1 mode (or empty)
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# $7 - file in branch2 mode (or empty)
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#
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# Handle some trivial cases.. The _really_ trivial cases have
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# been handled already by git-read-tree, but that one doesn't
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# do any merges that might change the tree layout.
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case "${1:-.}${2:-.}${3:-.}" in
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#
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# Deleted in both or deleted in one and unchanged in the other
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#
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"$1.." | "$1.$1" | "$1$1.")
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if [ "$2" ]; then
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echo "Removing $4"
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else
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# read-tree checked that index matches HEAD already,
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# so we know we do not have this path tracked.
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# there may be an unrelated working tree file here,
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# which we should just leave unmolested.
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exit 0
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fi
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if test -f "$4"; then
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rm -f -- "$4" &&
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rmdir -p "$(expr "z$4" : 'z\(.*\)/')" 2>/dev/null || :
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fi &&
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exec git-update-index --remove -- "$4"
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;;
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#
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# Added in one.
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#
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".$2.")
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# the other side did not add and we added so there is nothing
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# to be done.
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;;
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"..$3")
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echo "Adding $4"
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test -f "$4" || {
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echo "ERROR: untracked $4 is overwritten by the merge."
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exit 1
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}
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git-update-index --add --cacheinfo "$6$7" "$2$3" "$4" &&
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exec git-checkout-index -u -f -- "$4"
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;;
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#
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# Added in both, identically (check for same permissions).
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#
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".$3$2")
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if [ "$6" != "$7" ]; then
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echo "ERROR: File $4 added identically in both branches,"
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echo "ERROR: but permissions conflict $6->$7."
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exit 1
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fi
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echo "Adding $4"
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git-update-index --add --cacheinfo "$6" "$2" "$4" &&
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exec git-checkout-index -u -f -- "$4"
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;;
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#
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# Modified in both, but differently.
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#
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"$1$2$3" | ".$2$3")
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case ",$6,$7," in
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*,120000,*)
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echo "ERROR: $4: Not merging symbolic link changes."
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exit 1
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;;
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esac
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src2=`git-unpack-file $3`
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case "$1" in
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'')
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echo "Added $4 in both, but differently."
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# This extracts OUR file in $orig, and uses git-apply to
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# remove lines that are unique to ours.
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orig=`git-unpack-file $2`
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sz0=`wc -c <"$orig"`
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diff -u -La/$orig -Lb/$orig $orig $src2 | git-apply --no-add
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sz1=`wc -c <"$orig"`
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# If we do not have enough common material, it is not
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# worth trying two-file merge using common subsections.
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expr "$sz0" \< "$sz1" \* 2 >/dev/null || : >$orig
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;;
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*)
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echo "Auto-merging $4"
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orig=`git-unpack-file $1`
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;;
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esac
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# Be careful for funny filename such as "-L" in "$4", which
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# would confuse "merge" greatly.
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src1=`git-unpack-file $2`
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merge "$src1" "$orig" "$src2"
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ret=$?
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# Create the working tree file, using "our tree" version from the
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# index, and then store the result of the merge.
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git-checkout-index -f --stage=2 -- "$4" && cat "$src1" >"$4"
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rm -f -- "$orig" "$src1" "$src2"
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if [ "$6" != "$7" ]; then
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echo "ERROR: Permissions conflict: $5->$6,$7."
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ret=1
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fi
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if [ "$1" = '' ]; then
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ret=1
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fi
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if [ $ret -ne 0 ]; then
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echo "ERROR: Merge conflict in $4"
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exit 1
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fi
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exec git-update-index -- "$4"
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;;
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*)
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echo "ERROR: $4: Not handling case $1 -> $2 -> $3"
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;;
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esac
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exit 1
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