- "exec_cmd.h" became unnecessary at
b931aa5a (Call builtin ls-tree
in git-cat-file -p, 2006-05-26), when it changed an earlier code
that delegated tree display to "ls-tree" via the run_command()
API (hence needing "exec_cmd.h") to call cmd_ls_tree() directly.
We should have removed the include in the same commit, but we
forgot to do so.
- "diff.h" was added at
e5fba602 (textconv: support for cat_file,
2010-06-15), together with "userdiff.h", but "userdiff.h" can be
included without including "diff.h"; the header was unnecessary
from the beginning.
- "tag.h" and "tree.h" were necessary since
8e440259 (Use blob_,
commit_, tag_, and tree_type throughout., 2006-04-02) to check
the type of object by comparing typename with tree_type and
tag_type (pointers to extern strings).
21666f1a (convert object type handling from a string to a number,
2007-02-26) made these <type>_type strings unnecessary, and it
could have switched to include "object.h", which is necessary to
use typename(), but it forgot to do so. Because "tag.h" and
"tree.h" include "object.h", it did not need to explicitly
include "object.h" in order to start using typename() itself.
We do not even have to include "object.h" after removing these
two #includes, because "builtin.h" includes "commit.h" which in
turn includes "object.h" these days. This happened at
7b9c0a69
(git-commit-tree: make it usable from other builtins,
2008-07-01).
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>