Nguyễn Thái Ngọc Duy 202fbb3315 parse-options: add one-shot mode ...

This is to help reimplement diff_opt_parse() using parse_options().
The behavior of parse_options() is changed to be the same as the
other:

- no argv0 in argv[], everything can be processed
- argv[] must not be updated, it's the caller's job to do that
- return the number of arguments processed
- leave all unknown options / non-options alone (this one can already
  be achieved with PARSE_OPT_KEEP_UNKNOWN and
  PARSE_OPT_STOP_AT_NON_OPTION)

This mode is NOT supposed to stay here for long. It's to help
converting diff/rev option parsing. Once that work is over and we can
just use parse_options() throughout the code base, this will be
deleted.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2019-01-27 16:28:17 -08:00

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