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patch 8.2.2289: Vim9: 'cpo' can become empty

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Problem:    Vim9: 'cpo' can become empty.
Solution:   Use empty_option instead of an empty string.  Update quickfix
            buffer after restoring 'cpo'.  (closes #7608)
This commit is contained in:
Bram Moolenaar
2021-01-03 19:52:05 +01:00
parent 5afd081cd3
commit e5a2dc87fd
10 changed files with 56 additions and 11 deletions
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4
src/syntax.c
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@@ -5670,7 +5670,7 @@ get_syn_pattern(char_u *arg, synpat_T *ci)
// Make 'cpoptions' empty, to avoid the 'l' flag
cpo_save = p_cpo;
p_cpo = (char_u *)"";
p_cpo = empty_option;
ci->sp_prog = vim_regcomp(ci->sp_pattern, RE_MAGIC);
p_cpo = cpo_save;
@@ -5858,7 +5858,7 @@ syn_cmd_sync(exarg_T *eap, int syncing UNUSED)
// Make 'cpoptions' empty, to avoid the 'l' flag
cpo_save = p_cpo;
p_cpo = (char_u *)"";
p_cpo = empty_option;
curwin->w_s->b_syn_linecont_prog =
vim_regcomp(curwin->w_s->b_syn_linecont_pat, RE_MAGIC);
p_cpo = cpo_save;