hgeditor

Move commands.forget over to using new walk code.

With no names, it now recursively forgets everything, as is the default
behaviour of other commands.  And prints the names of all files it
hasn't specifically been told to forget.

#!/bin/sh
#
# This is an example of using HGEDITOR to automate the signing of
# commits and so on.

# change this to one to turn on GPG support
SIGN=0

T1=""; T2=""
cleanup_exit() {
    rm -f "$T1" "$T2"
    exit $1
}

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

# Remove temporary files even if we get interrupted
trap "cleanup_exit 255" TERM KILL INT QUIT ABRT
T1=`mktemp`; T2=`mktemp`
(
    cd "`hg root`"
    grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
        hg diff "$changed" >> "$T2"
    done
)

echo > "$T1"
if [ "$SIGN" == "1" ]; then
    MANIFEST=`grep '^HG: manifest hash' "$1" | cut -b 19-`
    echo -e "\nmanifest hash: $MANIFEST" >> "$T1"
fi
grep -vE '^(HG: manifest hash .*)?$' "$1" >> "$T1"

CHECKSUM=`md5sum "$T1"`
$EDITOR "$T1" "$T2" || cleanup_exit $?
echo "$CHECKSUM" | md5sum -c >/dev/null 2>&1 && cleanup_exit 13

if [ "$SIGN" == "1" ]; then
    {
        head -n 1 "$T1"
        echo
        grep -v "^HG:" "$T1" | gpg -t -a -u "${HGUSER}" --clearsign
    } > "$T2" && mv "$T2" "$1"
else
    mv "$T1" "$1"
fi

cleanup_exit $?