On Mon, Nov 19, 2018 at 12:42 PM Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> wrote: > > > On Sun, Nov 18 2018, Nguyễn Thái Ngọc Duy wrote: > > > When :(attr) was added, it supported one of the two main pathspec > > matching functions, the one that works on a list of paths. The other > > one works on a tree, tree_entry_interesting(), which gets :(attr) > > support in this series. > > > > With this, "git grep <pattern> <tree> -- :(attr)" or "git log :(attr)" > > will not abort with BUG() anymore. > > > > But this also reveals an interesting thing: even though we walk on a > > tree, we check attributes from _worktree_ (and optionally fall back to > > the index). This is how attributes are implemented since forever. I > > think this is not a big deal if we communicate clearly with the user. > > But otherwise, this series can be scraped, as reading attributes from > > a specific tree could be a lot of work. > > > > The main patch is the last one. The others are just to open a path to > > pass "struct index_state *" down to tree_entry_interesting(). This may > > become standard procedure because we don't want to stick the_index (or > > the_repository) here and there. > > Another side-note (this thread is turning into my personal blog at this > point...) I found an old related thread: > https://public-inbox.org/git/20170509225219.GB106700@xxxxxxxxxx/ > > So this series fixes 1/2 of the issues noted there, but git-ls-tree will > still die with the same error. If you mean BUG(), not it does not. There are just a couple more places besides tree_entry_interesting() and match_pathspec() that need to be aware of all the magic things. ls-tree is one of those but it's well guarded and will display this instead $ git ls-tree HEAD ':(attr:abc=def)' fatal: :(attr:abc=def): pathspec magic not supported by this command: 'attr' If you mean making ls-tree support :(attr) and other stuff, it's not going to happen in near future. It may be nice to switch to tree_entry_interesting() in this command, but if it was easy to do I would have done it years ago :P -- Duy
