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merge script: --ff-only to disallow true merge
Port v1.6.6-rc0~62^2 (Teach 'git merge' and 'git pull' the option --ff-only, 2009-10-29) to the old merge script. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -15,6 +15,7 @@ log add list of one-line log to merge commit message
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squash create a single commit instead of doing a merge
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commit perform a commit if the merge succeeds (default)
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ff allow fast-forward (default)
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ff-only abort if fast-forward is not possible
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s,strategy= merge strategy to use
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X= option for selected merge strategy
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m,message= message to be used for the merge commit (if any)
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@ -45,6 +46,7 @@ use_strategies=
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xopt=
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allow_fast_forward=t
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fast_forward_only=
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allow_trivial_merge=t
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squash= no_commit= log_arg=
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@ -189,7 +191,13 @@ parse_config () {
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--no-ff)
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test "$squash" != t ||
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die "You cannot combine --squash with --no-ff."
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test "$fast_forward_only" != t ||
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die "You cannot combine --ff-only with --no-ff."
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allow_fast_forward=f ;;
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--ff-only)
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test "$allow_fast_forward" != f ||
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die "You cannot combine --ff-only with --no-ff."
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fast_forward_only=t ;;
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-s|--strategy)
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shift
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case " $all_strategies " in
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@ -412,8 +420,8 @@ t,1,"$head",*)
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# We are not doing octopus, not fast-forward, and have only
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# one common.
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git update-index --refresh 2>/dev/null
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case "$allow_trivial_merge" in
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t)
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case "$allow_trivial_merge,$fast_forward_only" in
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t,)
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# See if it is really trivial.
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git var GIT_COMMITTER_IDENT >/dev/null || exit
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echo "Trying really trivial in-index merge..."
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@ -452,6 +460,11 @@ t,1,"$head",*)
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;;
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esac
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if test "$fast_forward_only" = t
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then
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die "Not possible to fast-forward, aborting."
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fi
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# We are going to make a new commit.
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git var GIT_COMMITTER_IDENT >/dev/null || exit
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