view tests/test-rebase-check-restore @ 8849:80cc4b1a62d0

compare grep result between target and its parent

I found that typical case is that grep target is added at (*) revision
in the tree shown below.

     +--- 1(*) --- 3
     0
     +--- 2 ------ 4

Now, I expect 'hg grep --all' to show only rev:1 which is first
appearance of target line.

But 'hg grep --all' will tell:

  target line dis-appeared at 3 => 4
  target line     appeared at 2 => 3
  target line dis-appeared at 1 => 2
  target line     appeared at 0 => 1

because current 'hg grep' implementation compares not between target
revision and its parent, but between neighbor revisions in walkthrough
order.

I checked performance of this patch by "hg grep --follow --all
walkchangerevs" on whole Mercurial repo, and patched version could
complete as fast as un-patched one.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "graphlog=" >> $HGRCPATH
echo "rebase=" >> $HGRCPATH

BASE=`pwd`

addcommit () {
    echo $1 > $1
    hg add $1
    hg commit -d "${2} 0" -m $1
}

commit () {
    hg commit -d "${2} 0" -m $1
}

createrepo () {
    cd $BASE
    rm -rf a
    hg init a
    cd a
    addcommit "A" 0
    addcommit "B" 1
    echo "C" >> A
    commit "C" 2

    hg update -C 0
    echo "D" >> A
    commit "D" 3
    addcommit "E" 4

    hg update -C 0
    hg branch 'notdefault'
    echo "F" >> A
    commit "F" 5
}

echo
echo "% - Rebasing B onto E - check keep"
createrepo > /dev/null 2>&1
hg glog  --template '{rev}:{desc}:{branches}\n'
hg rebase -s 1 -d 4 --keep 2>&1 | sed 's/\(saving bundle to \).*/\1/'

echo
echo "% - Solve the conflict and go on"
echo 'conflict solved' > A
rm A.orig
hg resolve -m A
hg rebase --continue 2>&1 | sed 's/\(saving bundle to \).*/\1/'
hg glog  --template '{rev}:{desc}:{branches}\n'

echo
echo "% - Rebase F onto E - check keepbranches"
createrepo > /dev/null 2>&1
hg glog  --template '{rev}:{desc}:{branches}\n'
hg rebase -s 5 -d 4 --keepbranches 2>&1 | sed 's/\(saving bundle to \).*/\1/'

echo
echo "% - Solve the conflict and go on"
echo 'conflict solved' > A
rm A.orig
hg resolve -m A
hg rebase --continue 2>&1 | sed 's/\(saving bundle to \).*/\1/'
hg glog  --template '{rev}:{desc}:{branches}\n'

exit 0