Re: Problem creating commits/trees with commit-tree/mktree

Gavin Beatty [off-list ref] wrote:

I want to write commits to a branch without touching the index or
having a checkout (for a git subcommand I'm writing).

I can create new blobs and trees but can't figure out how to commit a
new tree/blob _with_ the old tree.

Currently, I do something a lot like:

objsha=$(echo 'contents' | git hash-object -w --stdin)
objtreesha=$(printf "100644 blob $objsha\tfile.txt\000" | git mktree -z)
newtreesha=$(printf "040000 tree $objtreesha\ttreefileisin\000" | git mktree -z)

You aren't feeding in the old tree contents as part of this command.

If you are really doing this via a script, you should look at
git-fast-import.  Its faster, and its language better supports
this notion of editing an existing tree.

-- 
Shawn.