commit | 5c387428f10c27c24d3adb890cd466e2300518fa | [log] [tgz] |
---|---|---|
author | Nguyễn Thái Ngọc Duy <pclouds@gmail.com> | Mon Apr 29 17:05:25 2019 +0700 |
committer | Junio C Hamano <gitster@pobox.com> | Tue May 07 12:23:22 2019 +0900 |
tree | dfe83739e3ed8989f54a6dc58222a51959534c99 | |
parent | 83232e38648b51abbcbdb56c94632b6906cc85a6 [diff] |
parse-options: don't emit "ambiguous option" for aliases Change the option parsing machinery so that e.g. "clone --recurs ..." doesn't error out because "clone" understands both "--recursive" and "--recurse-submodules" to mean the same thing. Initially "clone" just understood --recursive until the --recurses-submodules alias was added in ccdd3da652 ("clone: Add the --recurse-submodules option as alias for --recursive", 2010-11-04). Since bb62e0a99f ("clone: teach --recurse-submodules to optionally take a pathspec", 2017-03-17) the longer form has been promoted to the default. But due to the way the options parsing machinery works this resulted in the rather absurd situation of: $ git clone --recurs [...] error: ambiguous option: recurs (could be --recursive or --recurse-submodules) Add OPT_ALIAS() to express this link between two or more options and use it in git-clone. Multiple aliases of an option could be written as OPT_ALIAS(0, "alias1", "original-name"), OPT_ALIAS(0, "alias2", "original-name"), ... The current implementation is not exactly optimal in this case. But we can optimize it when it becomes a problem. So far we don't even have two aliases of any option. A big chunk of code is actually from Junio C Hamano. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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