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| H A D | kernel-doc | diff e334f873eb4e1638dd0b45200d2d8838a13b0cac Thu Feb 24 14:02:46 CET 2022 Akira Yokosawa <akiyks@gmail.com> docs: scripts/kernel-doc: Detect absence of FILE arg
Currently, when there is no FILE argument following a switch such
as -man, -rst, or -none, kernel-doc exits with a warning from perl
(long msg folded):
Use of uninitialized value $ARGV[0] in pattern match (m//)
at ./scripts/kernel-doc line 438.
, which is unhelpful.
Improve the behavior by adding a check at the bottom of parsing
loop.
If the argument is absent, display help text and exit with
the code of 1 (via usage()).
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/7b136049-a3ba-0eb5-8717-364d773ff914@gmail.com
[jc: reworked to fix conflict with pod patches]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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