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vi: use basic regular expressions for search

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Both traditional vi and vim use basic regular expressions for
search.  Also, they don't allow matches to extend across line
endings.  Thus with the file:

   123
   234

the search '/2.*4$' should find the second '2', not the first.

Make BusyBox vi do the same.

Whether or not VI_REGEX_SEARCH is enabled:

function                                             old     new   delta
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/0 up/down: 0/0)                 Total: 0 bytes

Signed-off-by: Andrey Dobrovolsky <andrey.dobrovolsky.odessa@gmail.com>
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Ron Yorston 2021-07-02 08:23:06 +01:00 committed by Denys Vlasenko
parent b50ac07cba
commit 2916443ab6
1 changed files with 2 additions and 2 deletions
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4
editors/vi.c
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@ -2378,9 +2378,9 @@ static char *char_search(char *p, const char *pat, int dir_and_range)
char *q;
int i, size, range, start;
re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
re_syntax_options = RE_SYNTAX_POSIX_BASIC & (~RE_DOT_NEWLINE);
if (ignorecase)
re_syntax_options = RE_SYNTAX_POSIX_EXTENDED | RE_ICASE;
re_syntax_options |= RE_ICASE;
memset(&preg, 0, sizeof(preg));
err = re_compile_pattern(pat, strlen(pat), &preg);