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update-bash: fix revision variable setting

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* only set HOMEBREW_UPDATE_BEFORE inside pull instead of fetch.
* fix HOMEBREW_UPDATE_BEFORE/AFTER variable settings. They should be set
  to INITIAL_REVISION and CURRENT_REVISION correspondingly.
* avoid unnecessary duplicated shellout.
* remove unused variable.
This commit is contained in:
Xu Cheng 2016-01-21 13:58:54 +08:00
parent 2f52ca9ded
commit f7c276a0be
1 changed files with 5 additions and 6 deletions
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11
Library/Homebrew/cmd/update-bash.sh
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@ -176,9 +176,10 @@ pull() {
# "brew update --simulate-from-current-branch"
if [[ -n "$HOMEBREW_SIMULATE_FROM_CURRENT_BRANCH" ]]
then
INITIAL_REVISION="$(git rev-parse -q --verify "$(upstream_branch)")"
INITIAL_REVISION="$(git rev-parse -q --verify "$UPSTREAM_BRANCH")"
CURRENT_REVISION="$(read_current_revision)"
export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$(git rev-parse "$UPSTREAM_BRANCH")"
export HOMEBREW_UPDATE_BEFORE"$TAP_VAR"="$INITIAL_REVISION"
export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$CURRENT_REVISION"
if ! git merge-base --is-ancestor "$INITIAL_REVISION" "$CURRENT_REVISION"
then
odie "Your HEAD is not a descendant of $UPSTREAM_BRANCH!"
@ -199,6 +200,7 @@ pull() {
fi
INITIAL_REVISION="$(read_current_revision)"
export HOMEBREW_UPDATE_BEFORE"$TAP_VAR"="$INITIAL_REVISION"
# ensure we don't munge line endings on checkout
git config core.autocrlf false
@ -210,8 +212,7 @@ pull() {
git merge --no-edit --ff $QUIET_ARGS "origin/$UPSTREAM_BRANCH"
fi
CURRENT_REVISION="$(read_current_revision)"
export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$(git rev-parse "$UPSTREAM_BRANCH")"
export HOMEBREW_UPDATE_AFTER"$TAP_VAR"="$(read_current_revision)"
trap '' SIGINT
@ -300,8 +301,6 @@ EOS
do
[[ -d "$DIR/.git" ]] || continue
cd "$DIR" || continue
TAP_VAR=$(repo_var "$DIR")
export HOMEBREW_UPDATE_BEFORE"$TAP_VAR"="$(git rev-parse "$(upstream_branch)")"
UPSTREAM_BRANCH="$(upstream_branch)"
# the refspec ensures that the default upstream branch gets updated
git fetch $QUIET_ARGS origin \