hgeditor

[PATCH] /dev/null for other OS

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[PATCH] /dev/null for other OS

From: K Thananchayan <[e-mail]>

Null device name is platform dependent. Introduce util.nulldev
- - platform dependent constant and use it instead of '/dev/null'

manifest hash: 95a1bfdb712c53ef97aaff73f7f4c87e9299cf59
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#!/bin/bash
#
# This is an example of using HGEDITOR to automate the signing of
# commits and so on.

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

case "${EDITOR:=vi}" in
    emacs)
        EDITOR="$EDITOR -nw"
        ;;
    gvim|vim)
        EDITOR="$EDITOR -f -o"
        ;;
esac

if grep -q "^HG: merge resolve" "$1" ; then
    # we don't sign merges
    exec $EDITOR "$1"
else
    T1=`mktemp`; T2=`mktemp`
    MANIFEST=`grep '^HG: manifest hash' "$1" | cut -b 19-`

    echo -e "\n\nmanifest hash: $MANIFEST" >> "$T1"
    grep -vE '^(HG: manifest hash .*)?$' "$1" >> "$T1"
    hg diff >> "$T2"

    CHECKSUM=`md5sum "$T1"`
    $EDITOR "$T1" "$T2" || cleanup_exit $?
    echo "$CHECKSUM" | md5sum -c 2>/dev/null && cleanup_exit 0
    {
        head -1 "$T1"
        echo
        grep -v "^HG:" "$T1" | gpg -a -u "${HGUSER:-$EMAIL}" --clearsign
    } > "$T2" && mv "$T2" "$1"
    cleanup_exit $?
fi