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perf: remove redundant strlen in skipwhite (#26177)

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skipwhite was iterating over the input twice and scanning for the null
byte character with strlen. this is redundant, because it's already
covered by ascii_iswhite that accepts only space or tab character.

Co-authored-by: ii14 <ii14@users.noreply.github.com>
This commit is contained in:
ii14 2023-11-23 22:26:33 +01:00 committed by GitHub
parent df399ea0d2
commit 32a4c9f4f9
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1 changed files with 5 additions and 2 deletions
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7
src/nvim/charset.c
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@ -903,11 +903,14 @@ bool vim_isprintc_strict(int c)
/// @param[in] p String to skip in.
///
/// @return Pointer to character after the skipped whitespace.
char *skipwhite(const char *const p)
char *skipwhite(const char *p)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL
FUNC_ATTR_NONNULL_RET
{
return skipwhite_len(p, strlen(p));
while (ascii_iswhite(*p)) {
p++;
}
return (char *)p;
}
/// Like `skipwhite`, but skip up to `len` characters.