Re: Two problems on alias of git

From: Kana Natsuno <kana@whileimautomaton.net>
Date: May 5, 2009, 16:25 UTC
Message-ID: <op.utgs86ta6f2obg@i220-99-253-139.s27.a098.ap.plala.or.jp>
In-Reply-To: <200905051742.51163.jnareb@gmail.com>

On Wed, 06 May 2009 00:42:49 +0900, Jakub Narebski <jnareb@gmail.com> wrote:

Show 16 quoted lines

> By the way, you can use continuation-of-line character (end line
> with '\') and/or can embed newlines using C escape sequence, i.e. "\n".
>
> So your code can look like this (although I am not sure it is worth it):
>
>   [alias]
>         lr = "!$SHELL -c '                               \n\
>                 n=10;                                    \n\
>                 1=\"${1:-$n}\";                          \n\
>                 if ! [ \"${1##[0-9]*}\" = \"\" ]; then   \n\
>                   t=\"$1\";                              \n\
>                   1=\"${2:-$n}\";                        \n\
>                   2=\"$t\";                              \n\
>                 fi;                                      \n\
>                 git --no-pager l1 --reverse -\"$1\" \"${2:-HEAD}\" \n\
>               ' __dummy__"

Thank you again, I didn't know that.  It is better than what I wrote.

> BTW. you need to quote value because it contains comment character '#'
> in 4th line of script.

Really? As far as I read the code of git, especially parse_value() in config.c, it is not necessary to escape '#'s because they are inside of the outermost doublequotes and they should not be escaped, because \# is an unknown escape sequence and git rejects them. If #s are escaped, it causes an error as follows:

$ git config --get alias.lr fatal: bad config file line 29 in /Users/kana/.gitconfig

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