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unpack-trees: introduce preserve_ignored to unpack_trees_options

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Currently, every caller of unpack_trees() that wants to ensure ignored
files are overwritten by default needs to:
   * allocate unpack_trees_options.dir
   * flip the DIR_SHOW_IGNORED flag in unpack_trees_options.dir->flags
   * call setup_standard_excludes
AND then after the call to unpack_trees() needs to
   * call dir_clear()
   * deallocate unpack_trees_options.dir
That's a fair amount of boilerplate, and every caller uses identical
code.  Make this easier by instead introducing a new boolean value where
the default value (0) does what we want so that new callers of
unpack_trees() automatically get the appropriate behavior.  And move all
the handling of unpack_trees_options.dir into unpack_trees() itself.

While preserve_ignored = 0 is the behavior we feel is the appropriate
default, we defer fixing commands to use the appropriate default until a
later commit.  So, this commit introduces several locations where we
manually set preserve_ignored=1.  This makes it clear where code paths
were previously preserving ignored files when they should not have been;
a future commit will flip these to instead use a value of 0 to get the
behavior we want.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren
2021-09-27 16:33:41 +00:00
committed by Junio C Hamano
parent 491a7575f1
commit 04988c8d18
14 changed files with 35 additions and 40 deletions
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2
reset.c
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@ -56,6 +56,8 @@ int reset_head(struct repository *r, struct object_id *oid, const char *action,
unpack_tree_opts.fn = reset_hard ? oneway_merge : twoway_merge;
unpack_tree_opts.update = 1;
unpack_tree_opts.merge = 1;
/* FIXME: Default should be to remove ignored files */
unpack_tree_opts.preserve_ignored = 1;
init_checkout_metadata(&unpack_tree_opts.meta, switch_to_branch, oid, NULL);
if (!detach_head)
unpack_tree_opts.reset = 1;