hgeditor

run-tests: show scheduling with --showchannels

This gives one line of output per second with one column per -j level
that allows analyzing test scheduling problems. First 24 seconds of
output at -j 30 looks like this:

  0                                                                .
  1  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =   s.
  2  c c o c r l g r s s = c p = c h c a h c g c h c b c c l l c   ss
  3  h o b o e a e u u u c o a h o e o c g o l h g h u o = a o =   s
  4  e n s n b r n n b b   m t g n l n l w n o e w e n n e r g i   .
  5  c t o = a g d - r r = m c w v p v . e v g c e c d v x g . m
  6  k r l r s e o t e e b a h e e . e . b e . k b k l e t e . p
  7  - i e e e f c e p p u n b b r . r . - r . - - - e r e f . o   .
  8  p b t v - i . s o o n d o d t . t . c t . c s = 2 t n i . r
  9  y - e s c l . t - . d - m i - . - . o - . o y r - - s l . t
 10  3 p - e h e . s s . l t b r s . s . m s . d m e f s i e . .
 11  - e c t e s . . v . e e . . v . v . m v . e r n o v o s . .
 12  c r h . c - . . n . 2 m . . n . n . a n . . e a r n n . . .
 13  o f e . k u . . . . - p . . - . - . n - . . v m m - . . . .
 14  m . c . - p . . . . e l . . s . m . d s . . . e a e . . . .
 15  p . k . r d . . . . x a . . i . o . s o . . . - t n . . . .
 16  a . h . e a . . . . c t . . n . v . . u . . . m . c . . . .
 17  t . e . s t . . . . h e . . k . e . . r . . . e . o . . . .
 18  . . a . t e . . . . a . . . . . . . . c . . . r . d . . . .
 19  . . d . o . . . . . n . . . . . . . . e . . . g . i . . . .
 20  . . s . r . . . . . g . . . . . . . . . . . . e . n . . . .
 21  . . . . e . . . . . e . . . . . . . . . . . . 2 . g . . . .
 22  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 23  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   .
 24  . . . . . . . . . . . . . . . . . . . . . . . . . = . . . .   ^C

Test names read off vertically, beginning with '='. Idle time (not
shown) appears as blank space.

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

# 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 $?