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  • Alexander Miloslavskiy's avatar
    rm: support the --pathspec-from-file option · 5f393dc3
    Alexander Miloslavskiy authored and Junio C Hamano's avatar Junio C Hamano committed
    Decisions taken for simplicity:
    1) It is not allowed to pass pathspec in both args and file.
    
    Adjustments were needed for `if (!argc)` block:
    
    This code actually means "pathspec is not present". Previously, pathspec
    could only come from commandline arguments, so testing for `argc` was a
    valid way of testing for the presence of pathspec. But this is no longer
    true with `--pathspec-from-file`.
    
    During the entire `--pathspec-from-file` story, I tried to keep its
    behavior very close to giving pathspec on commandline, so that switching
    from one to another doesn't involve any surprises.
    
    However, throwing usage at user in the case of empty
    `--pathspec-from-file` would puzzle because there's nothing wrong with
    "usage" (that is, argc/argv array).
    
    On the other hand, throwing usage in the old case also feels bad to me.
    While it's less of a puzzle, I (as user) never liked the experience of
    comparing my commandline to "usage", trying to spot a difference. Since
    it's already known what the error is, it feels a lot better to give that
    specific error to user.
    
    Judging from [1] it doesn't seem that showing usage in this case was
    important (the patch was to avoid segfault), and it doesn't fit into how
    other commands react to empty pathspec (see for example `git add` with a
    custom message).
    
    Therefore, I decided to show new error text in both cases. In order to
    continue testing for error early, I moved `parse_pathspec()` higher. Now
    it happens before `read_cache()` / `hold_locked_index()` /
    `setup_work_tree()`, which shouldn't cause any issues.
    
    [1] Commit 7612a1ef
    
     ("git-rm: honor -n flag" 2006-06-09)
    
    Signed-off-by: default avatarAlexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
    Signed-off-by: default avatarJunio C Hamano <gitster@pobox.com>
    5f393dc3