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Re: [PATCH 0/2] read-tree: improve untracked file support

On 01/05/2019 11:31, Duy Nguyen wrote:
On Wed, May 1, 2019 at 5:14 PM Phillip Wood <phillip.wood123@xxxxxxxxx> wrote:

From: Phillip Wood <phillip.wood@xxxxxxxxxxxxx>

These two patches teach read-tree how to avoid overwriting untracked
files when doing '--reset -u' and also how to respect all of git's
standard excludes files. I'd like to see the porcelain commands stop
overwriting untracked files, this is a first step on the way. I'm not
sure if we want to add options to the porcelain commands to protect
untracked files or just change their behavior and add an option to
override that. I'm leaning towards the latter but I'd be interested to
hear what others think.

For new commands like git-restore, it's definitely a good thing to not
overwrite untracked files.

I agree, unfortunately this series does not help with git-restore, only git-switch. For restore on an index without conflicts I think it could just use the pathspec in struct unpack_trees_options and set opts.rest = UNPACK_RESET_PROTECT_UNTRACKED but that does not help if we want to handle conflicted paths differently to non-conflicted paths.

For existing commands I guess we have to go
over them one by one. For "git reset --hard", it should really just
overwrite whatever needed to get back to the known good state. "git
checkout -f" , not so sure (seems weird that we need force-level-two
option to override the protection provided by -f, if we change default

I think it's fine for "checkout -f" to overwrite untracked files (and if "switch --discard-changes" does not then there is no pressing need to add such a mode to checkout), --force is a good name for an option that nukes everything that gets in it's way. For "reset --hard" I'm not so sure, if I have changes to an untracked file I don't wont them overwritten by default. There is no porcelain equivalent to "read-tree --reset --protect-untracked -u" and I was hoping "reset --hard" may become that porcelain equivalent with a new --force or --overwrite-untracked option.

For the various "foo --abort" some (most?) are using "reset --merge" which I think declines to overwrite untracked files but rebase uses "reset --hard" which I'd like to change to protect untracked files in the same way that rebase does for the initial checkout and when picking commits. I haven't thought about stash.

Best Wishes