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Add prepare-patch for helping to generate patches for git project
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.bin/prepare-patch.sh
Executable file
230
.bin/prepare-patch.sh
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#!/usr/bin/env bash
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#
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# Prepare patches for submission to the Git mailing list.
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#
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# Usage: prepare-patch.sh [BASE-COMMIT-ISH] [PATCH-VERSION]
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#
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# ---
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#
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# Make sure that `git send-email` is configured properly in your Git config.
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#
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# Here is an example config for Gmail:
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#
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# [sendemail]
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# smtpencryption = tls
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# smtpserver = smtp.gmail.com
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# smtpuser = your-user@gmail.com
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# smtpserverport = 587
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# from = Firstname Lastname <your-user@gmail.com>
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#
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# In addition you need to enable "less securs apps" in Gmail:
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# https://gist.github.com/jasonkarns/4354421
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# https://support.google.com/accounts/answer/6010255?hl=en
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#
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#
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# This script is originaly from here
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# https://github.com/larsxschneider/git-list-helper/blob/master/prepare-patch.sh
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#
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set -e
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EMAIL=arti.zirk@gmail.com
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UPSTREAM_REMOTE=upstream
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DEFAULT_UPSTREAM_BRANCH=maint
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PATCH_TEMP_DIR=~/tmp/patches
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INTERDIFF="$PATCH_TEMP_DIR/interdiff.tmp"
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function msg () {
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echo -e "$(tput setaf 2)$1$(tput sgr 0)\n"
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}
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function warning () {
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echo -e "\n$(tput setaf 3)###\n### WARNING\n###\n> $(tput sgr 0)$1\n" >&2
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}
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git fetch $UPSTREAM_REMOTE
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BASE_BRANCH=$UPSTREAM_REMOTE/$DEFAULT_UPSTREAM_BRANCH
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PATCH_VERSION=1
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if [ $# -ge 1 ]; then
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BASE_BRANCH=$1
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fi
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if [ $# -eq 2 ]; then
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PATCH_VERSION=$2
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fi
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BASE_HASH=$(git rev-parse $BASE_BRANCH)
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HEAD_HASH=$(git rev-parse HEAD)
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TOPIC_NAME=$(git rev-parse --abbrev-ref HEAD)
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if [ $PATCH_VERSION -ge 2 ]; then
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LAST_PATCH_VERSION=$(($PATCH_VERSION - 1))
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LAST_TAG_NAME="$TOPIC_NAME-v$LAST_PATCH_VERSION"
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LAST_TAG_HASH=$(git ls-remote --tags origin | grep refs/tags/$LAST_TAG_NAME | cut -f 1)
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fi
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# Generate tag
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TAG_NAME="$TOPIC_NAME-v$PATCH_VERSION"
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git tag --force $TAG_NAME
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########################################################################
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msg "Checking commits..."
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set +e
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git --no-pager diff --check $BASE_HASH...$HEAD_HASH
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set -e
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# Check committer and author email
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AUTHORS=$(git --no-pager log --format="%ae" $BASE_HASH...$HEAD_HASH | uniq)
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[ "$AUTHORS" != "$EMAIL" ] && warning "Authors: $AUTHORS"
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COMMITTERS=$(git --no-pager log --format="%ce" $BASE_HASH...$HEAD_HASH | uniq)
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[ "$COMMITTERS" != "$EMAIL" ] && warning "Committers: $COMMITTERS"
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# Check the test cases for spaces after ">"
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set +e
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git --no-pager diff $BASE_HASH..$HEAD_HASH t | grep "\+.*> .*"
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GREP_RETURN_CODE=$?
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set -e
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if [ $GREP_RETURN_CODE -eq 0 ]; then
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warning "Spaces after '>' detected!"
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fi
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# Check for non-ASCII characters in commit messages
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NON_ASCII=$(git --no-pager log --pretty=format:"%B" $BASE_HASH...$HEAD_HASH | tr -d "\000-\177")
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if [ "$NON_ASCII" != "" ]; then
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git --no-pager log --pretty=format:"%B" $BASE_HASH...$HEAD_HASH
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warning "Non ASCII characters in commit message detected!"
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warning "---$NON_ASCII---"
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fi
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########################################################################
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msg "Compiling patches..."
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# git rebase $BASE_HASH -x 'make --quiet -j8;'
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########################################################################
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msg "Generating patches..."
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FORMAT_PATCH_FLAGS="--quiet --notes --find-renames --reroll-count=$PATCH_VERSION --base=$BASE_HASH"
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COMMIT_COUNT=$(git --no-pager rev-list $BASE_HASH...$HEAD_HASH --count)
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BASE_REF=$(git tag --points-at $BASE_HASH)
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test $BASE_REF || BASE_REF=$(git branch -a --contains $BASE_HASH | grep $UPSTREAM_REMOTE | sed 's/.*\///' | head -n1)
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read -r -d '\0' URLS <<EOM
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Base Ref: $BASE_REF
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Web-Diff: https://github.com/artizirk/git/commit/${HEAD_HASH:0:10}
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Checkout: git fetch https://github.com/artizirk/git $TAG_NAME && git checkout ${HEAD_HASH:0:10}
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\0
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EOM
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if [ $PATCH_VERSION -ge 2 ]
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then
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# The interdiff can contain "\" which causes problems in BASH
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# variables. I assume it would need to be escaped somehow...
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cat <<EOM > "$INTERDIFF"
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### Interdiff (v$LAST_PATCH_VERSION..v$PATCH_VERSION):
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$(git --no-pager diff -w $LAST_TAG_HASH $HEAD_HASH)
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### Patches
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EOM
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fi
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if [ $COMMIT_COUNT -eq "1" ]
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then
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git notes add -f --message="$URLS"
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! [ -e "$INTERDIFF" ] || git notes append -F "$INTERDIFF"
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else
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FORMAT_PATCH_FLAGS="$FORMAT_PATCH_FLAGS --cover-letter"
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fi
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PATCH_DIR=$PATCH_TEMP_DIR/$TOPIC_NAME
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rm -rf $PATCH_DIR
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mkdir -p $PATCH_DIR
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git format-patch $FORMAT_PATCH_FLAGS $BASE_HASH --output-directory $PATCH_DIR/
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if [ $COMMIT_COUNT -ne "1" ]
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then
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COVER_LETTER="$PATCH_DIR/v$PATCH_VERSION-0000-cover-letter.patch"
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split -p 'BLURB HERE' "$COVER_LETTER"
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cat xaa > $COVER_LETTER
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rm xaa
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printf "$URLS\n" >> $COVER_LETTER
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! [ -e "$INTERDIFF" ] || cat "$INTERDIFF" >> $COVER_LETTER
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tail -n +2 xab >> $COVER_LETTER
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rm xab
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fi
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! [ -e "$INTERDIFF" ] || rm "$INTERDIFF"
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########################################################################
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msg "Looking for potential reviewers..."
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# Based on Alek Storm's script:
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# https://gist.github.com/alekstorm/4949628
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function createBlameParts {
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awk -v commit="$BASE_HASH" '{
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if ($1 == "@@") {
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sub(",", ",+", $2)
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# -MC: Detect moved/copied lines across files
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# -w : Ignore whitespace changes
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# -L : Range
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print "git blame --line-porcelain -MCw -L " substr($2,2) " " commit
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}
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else
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print "-- " substr($3,3)
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}'
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}
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function concatBlameParts {
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awk '{
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if (match($0, /^--/) == 1)
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file=$0
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else
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print $0 " " file
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}'
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}
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function execBlame {
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while read COMMAND; do
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$COMMAND | sed -n "s/^author-mail <\([^>]*\)>$/\1/p"
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done
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}
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ELEVATE_RECENT_CONTRIBUTORS=$(
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git log --all --since="52 weeks ago" --pretty=format:%ae |
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sort |
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uniq |
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awk '{printf "-e /%s/s/^[[:space:]]*/9999999/ ",$0}'
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)
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REVIEWERS=$(
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git diff --diff-filter=DM "$BASE_HASH..$HEAD_HASH" |
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egrep '^@|^diff' |
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createBlameParts |
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concatBlameParts |
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execBlame |
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sort |
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uniq -c |
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grep -v $EMAIL |
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sed $ELEVATE_RECENT_CONTRIBUTORS |
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sort -nr |
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head -n 5 |
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awk '{printf "--cc="$2" ",$0}'
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)
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########################################################################
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$(git config core.editor) $PATCH_DIR &
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echo ""
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echo "Send patch with:"
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echo "git push origin $TAG_NAME && git send-email $PATCH_DIR/* --to=git@vger.kernel.org $REVIEWERS --in-reply-to="
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