view hgeditor @ 23700:a4958cdb2202

context: cache self._status correctly at workingctx.status

Before this patch, "workingctx.status" always replaces "self._status"
by the recent result, even though:

  - status isn't calculated against the parent of the working directory, or

  - specified "match" isn't "always" one
    (status is only visible partially)

If "workingctx" object is shared between some procedures indirectly
referring "ctx._status", this incorrect caching may cause unexpected
result: for example, "ctx._status" is used via "manifest()", "files()"
and so on.

To cache "self._status" correctly at "workingctx.status", this patch
overwrites "self._status" in "workingctx._buildstatus" only when:

  - status is calculated against the parent of the working directory, and
  - specified "match" is "always" one

This patch can be applied (and effective) only on default branch,
because procedure around "basectx.status" is much different between
stable and default: for example, overwriting "self._status" itself is
executed not in "workingctx._buildstatus" but in
"workingctx._poststatus", on stable branch.

#!/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 $?