view hgeditor @ 17242:336121088ef1 stable

histedit: fix new nodes computation with --continue (issue3534)

When running the following actions:

  pick 617f94f13c0f 1 +4
  drop 888f9082bf99 2 +5
  fold 251d831eeec5 3 +6

if the fold fails, is fixed by the user with a new changeset, --continue
will ignore the new revision when generating the fold changelog. This
was caused by --continue detecting new changesets as descendants of the
parent not descendants of changesets in the initial list. In this case,
dropped changesets must be ignored.

Even with the computation fixed, the 'newchildren' list was always
emptied by the filtering loop and passed empty to finishfold().

Note that changesets dropped and recreated identically will still be
missed. This probably cannot be solved but is unlikely to happen.

Other things, like 'newchildren' having multiple heads, should be
checked as well.

#!/bin/sh
#
# This is an example of using HGEDITOR to create of diff to review the
# changes while commiting.

# If you want to pass your favourite editor some other parameters
# only for Mercurial, modify this:
case "${EDITOR}" in
    "")
        EDITOR="vi"
        ;;
    emacs)
        EDITOR="$EDITOR -nw"
        ;;
    gvim|vim)
        EDITOR="$EDITOR -f -o"
        ;;
esac


HGTMP=""
cleanup_exit() {
    rm -rf "$HGTMP"
}

# Remove temporary files even if we get interrupted
trap "cleanup_exit" 0 # normal exit
trap "exit 255" HUP INT QUIT ABRT TERM

HGTMP=$(mktemp -d ${TMPDIR-/tmp}/hgeditor.XXXXXX)
[ x$HGTMP != x -a -d $HGTMP ] || {
  echo "Could not create temporary directory! Exiting." 1>&2
  exit 1
}

(
    grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
        "$HG" diff "$changed" >> "$HGTMP/diff"
    done
)

cat "$1" > "$HGTMP/msg"

MD5=$(which md5sum 2>/dev/null) || \
    MD5=$(which md5 2>/dev/null)
[ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg"`
if [ -s "$HGTMP/diff" ]; then
    $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $?
else
    $EDITOR "$HGTMP/msg" || exit $?
fi
[ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)

mv "$HGTMP/msg" "$1"

exit $?