1 #!/bin/sh

     2 #

     3 # This is an example of using HGEDITOR to create of diff to review the

     4 # changes while commiting.

     5 

     6 # If you want to pass your favourite editor some other parameters

     7 # only for Mercurial, modify this:

     8 case "${EDITOR}" in

     9     "")

    10         EDITOR="vi"

    11         ;;

    12     emacs)

    13         EDITOR="$EDITOR -nw"

    14         ;;

    15     gvim|vim)

    16         EDITOR="$EDITOR -f -o"

    17         ;;

    18 esac

    19 

    20 

    21 HGTMP=""

    22 cleanup_exit() {

    23     rm -rf "$HGTMP"

    24 }

    25 

    26 # Remove temporary files even if we get interrupted

    27 trap "cleanup_exit" 0 # normal exit

    28 trap "exit 255" HUP INT QUIT ABRT TERM

    29 

    30 HGTMP=$(mktemp -d ${TMPDIR-/tmp}/hgeditor.XXXXXX)

    31 [ x$HGTMP != x -a -d $HGTMP ] || {

    32   echo "Could not create temporary directory! Exiting." 1>&2

    33   exit 1

    34 }

    35 

    36 (

    37     grep '^HG: changed' "$1" | cut -b 13- | while read changed; do

    38         "$HG" diff "$changed" >> "$HGTMP/diff"

    39     done

    40 )

    41 

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

    43 

    44 MD5=$(which md5sum 2>/dev/null) || \

    45     MD5=$(which md5 2>/dev/null)

    46 [ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg"`

    47 if [ -s "$HGTMP/diff" ]; then

    48     $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $?

    49 else

    50     $EDITOR "$HGTMP/msg" || exit $?

    51 fi

    52 [ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)

    53 

    54 mv "$HGTMP/msg" "$1"

    55 

    56 exit $?