Re: [RFC] git --trace: trace command execution

[Matthias Lederhofer <matled@gmx.net>]

> Interesting.  Debugging one's alias entries would be helped with
> this I would imagine, and for that you would want something like
> this:
> 
> > Example:
> > % git showtag v1.4.1-rc1 > /dev/null
> > trace: exec: /home/matled/local/stow/git/bin/git-showtag v1.4.1-rc1
> > trace: exec failed: No such file or directory
> * trace: expanded alias "showtag" => "cat-file tag"
That's a good idea, I'll integrate that.

> By the way "git cat-file -p" or "git verify-tag -v" might be
> more pleasant to view a tag since they make the tagger timestamp
> human readable.
Ok, yesterday I was searching for something to see the annotation of a
tag. verify-tag -v looks quite much like that, is there any other way
to read this? Or in general: how do I work with tags? I want to build
a version tagged as v1.2 so currently I'll do
> git checkout -b 1.2 v1.2
and built it. But then I've to type the version number twice (typing
it once is annoying enough :)) and I've to type it once more to get
the tag annotation.

> Might be worth reusing quote.c::sq_quote(), perhaps?
Oh, sure, did not know about this. This would result in a loop of
malloc'ing memory for the buffer. Is this ok? Or should I add a
function like sq_quote which takes a stream and writes to it?

So for the --trace part I think an environment variable GIT_TRACE is
more suitable for this because children inherit this. So running git
status will show what internal commands the shell script uses.
Otherwise I see no way to pass the --trace option down because an
extern program like git-status, git-annotate etc will not accept
parameters which can be passed to `git'.