Re: difftool, open all diff files immediately, not in serial

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Seba Illingworth wrote:
> The default git diff behavior is to open each diff file in serial 
> (wait for previous file to be closed before opening next file).
> 
> I'm looking for a way to open all the files at once - in BeyondCompare 
> for example this would open all the files in tabs within the same BC window.

I posted the script below on IRC the other week[1] in reply to someone
looking for a way to do this for 'meld'.  I'm not sure this is the
*fastest* way to do this, but I'm at least trying to take a few
shortcuts ;-)

Since this is now the second request for such a tool, it would be nice
if you could at least shape this as a contrib/ patch (if it fits your
needs, of course).

[1] http://colabti.org/irclogger/irclogger_log/git?date=2009-07-14#l2180

-- 8< --
#!/bin/sh

. "$(git --exec-path)/git-sh-setup"
cd_to_toplevel # for the tar below

pre="${1-HEAD}"
post="$2"

tmp="$(mktemp -d)"

cleanup () {
	rm -rf $tmp
}

trap cleanup EXIT

mkdir "$tmp"/a "$tmp"/b

if [ -n "$post" ]; then
	git diff --name-only "$pre" "$post" > "$tmp"/filelist
	while read name; do
		mkdir -p "$tmp"/b/"$(dirname "$name")"
		git show "$post":"$name" > "$tmp"/b/"$name"
	done < "$tmp"/filelist
else
	git diff --name-only "$pre" > "$tmp"/filelist
	tar -c -T "$tmp"/filelist | (cd "$tmp"/b && tar -x)
fi

while read name; do
	mkdir -p "$tmp"/a/"$(dirname "$name")"
	git show "$pre":"$name" > "$tmp"/a/"$name"
done < "$tmp"/filelist

cd "$tmp"
#meld a b
diff -ur a b
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