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Re: [PATCH] Add git-filter-branch

From
Junio C Hamano <gitster@pobox.com>
Date
Jun 5, 2007, 10:30 UTC
Message-ID
<7vzm3ebsnk.fsf@assigned-by-dhcp.cox.net>
In-Reply-To
<20070605101845.GA16160@diku.dk>
Jonas Fonseca <fonseca@diku.dk> writes:
Show 16 quoted lines
> $ git filter-branch H2
> /home/fonseca/bin/git-filter-branch: 386: arith: syntax error: "i+1"
> $
>
> A possible fix that makes the test pass for me.
>
> diff --git a/git-filter-branch.sh b/git-filter-branch.sh
> index 0c8a7df..5cf9d3c 100644
> --- a/git-filter-branch.sh
> +++ b/git-filter-branch.sh
> @@ -339,7 +339,7 @@ test $commits -eq 0 && die "Found nothing to rewrite"
>  
>  i=0
>  while read commit; do
> -	i=$((i+1))
> +	i=$(echo i+1 | bc)
Are you sure this is not "echo $i+1"???

There are quite a few $((arithmetic)) already in our shell code, so I was initially a bit surprised. However, upon closer inspection, this particular use is not kosher at all.

The portable ones we already have in the code say things like:
	msgnum=$(($msgnum+1))

The one in filter-branch that bit you does not dereference 'i'. I am reasonably sure if you fix it to read:

	i=$(( $i+1 ))
dash would grok it.
Previous: David KastrupNext: Jonas Fonseca
Message 9 of 27 in “Add git-filter-branch”
  1. Add git-filter-branchJohannes Schindelin, Jun 3, 2007
  2. Jakub NarebskiJun 3, 2007
  3. Johannes SchindelinJun 3, 2007
  4. Jakub NarebskiJun 3, 2007
  5. Steven GrimmJun 3, 2007
  6. Johannes SchindelinJun 3, 2007
  7. Jonas FonsecaJun 5, 2007
  8. David KastrupJun 5, 2007
  9. Junio C HamanoJun 5, 2007
  10. Jonas FonsecaJun 5, 2007
  11. Johannes SchindelinJun 5, 2007
  12. filter-branch: use $(($i+1)) instead of $((i+1))Johannes Schindelin, Jun 6, 2007
  13. Johannes SixtJun 4, 2007
  14. Johannes SixtJun 4, 2007
  15. Johannes SchindelinJun 4, 2007
  16. Johannes SixtJun 4, 2007
  17. Johannes SchindelinJun 4, 2007
  18. Johannes SixtJun 5, 2007
  19. Johannes SchindelinJun 5, 2007
  20. Johannes SixtJun 6, 2007
  21. Junio C HamanoJun 6, 2007
  22. Johannes SchindelinJun 6, 2007
  23. Johannes SixtJun 6, 2007
  24. Johannes SchindelinJun 6, 2007
  25. filter-branch: also don't fail in map() if a commit cannot be mappedJohannes Sixt, Jun 6, 2007
  26. Johannes SchindelinJun 6, 2007
  27. filter-branch: also don't fail in map() if a commit cannot be mappedJohannes Sixt, Jun 6, 2007

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