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#!/bin/sh
GIT_DIR="$(git rev-parse --absolute-git-dir)"
dotest="$GIT_DIR/rebase-apply"
prec=4 &&
this=$(cat 2>/dev/null "$dotest/next") &&
msgnum=$(printf "%0${prec}d" $this) &&
test -f "$dotest/$msgnum" &&
message_id=$(sed -ne '
/^[ ]/{
# Append continuation line to hold space
H
# Swap hold and pattern
x
# Remove the LF, making it a single line
s/\n//
# Swap hold and pattern back
x
# Discard the pattern and go on
n
}
# Hold this new line, and look at what is in the hold space
x
# Is it the Message-ID line? If so, spit it out and finish.
/^[Mm][Ee][Ss][Ss][Aa][Gg][Ee]-[Ii][Dd]:[ ]*/{
s///p
q
}
# Otherwise, check if this new line is empty
x
# Is it? Then we are done with the header
/^$/b end
# Otherwise we need to hold onto this header line
x
# And start the next cycle
b
: end
# ??? do we want to check if we held onto the last message-id line
# and process it here if we did???
q
' "$dotest/$msgnum") &&
if test -n "$message_id" &&
head=$(git rev-parse --verify HEAD 2>/dev/null)
then
echo "$head $message_id" >>"$GIT_DIR"/am.log &&
(
git show --format="%B" --no-patch HEAD |
git interpret-trailers --no-divider \
--trailer "Message-Id: $message_id" |
git commit --amend --file -
)
fi
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