Mercurial > vim
diff src/regexp.c @ 23471:a7cdfc8e4b6e v8.2.2278
patch 8.2.2278: falling back to old regexp engine can some patterns
Commit: https://github.com/vim/vim/commit/66c50c565321d4d49d8d5620912e5e8fe4825644
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Jan 2 17:43:49 2021 +0100
patch 8.2.2278: falling back to old regexp engine can some patterns
Problem: Falling back to old regexp engine can some patterns.
Solution: Do not fall back once [[:lower:]] or [[:upper:]] is used.
(Christian Brabandt, closes #7572)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sat, 02 Jan 2021 17:45:03 +0100 |
| parents | 740b16b3c80b |
| children | bb29b09902d5 |
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--- a/src/regexp.c +++ b/src/regexp.c @@ -294,6 +294,7 @@ init_class_tab(void) static char_u *regparse; // Input-scan pointer. static int regnpar; // () count. +static int wants_nfa; // regex should use NFA engine #ifdef FEAT_SYN_HL static int regnzpar; // \z() count. static int re_has_z; // \z item detected @@ -381,6 +382,9 @@ static int cstrncmp(char_u *s1, char_u * static char_u *cstrchr(char_u *, int); static int re_mult_next(char *what); static int reg_iswordc(int); +#ifdef FEAT_EVAL +static void report_re_switch(char_u *pat); +#endif static regengine_T bt_regengine; static regengine_T nfa_regengine; @@ -2662,7 +2666,7 @@ vim_regcomp(char_u *expr_arg, int re_fla if (prog == NULL) { #ifdef BT_REGEXP_DEBUG_LOG - if (regexp_engine != BACKTRACKING_ENGINE) // debugging log for NFA + if (regexp_engine == BACKTRACKING_ENGINE) // debugging log for BT engine { FILE *f; f = fopen(BT_REGEXP_DEBUG_LOG_NAME, "a"); @@ -2686,6 +2690,9 @@ vim_regcomp(char_u *expr_arg, int re_fla && called_emsg == called_emsg_before) { regexp_engine = BACKTRACKING_ENGINE; +#ifdef FEAT_EVAL + report_re_switch(expr); +#endif prog = bt_regengine.regcomp(expr, re_flags); } }