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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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15
src/quickfix.c
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@@ -8099,6 +8099,7 @@ ex_helpgrep(exarg_T *eap)
int new_qi = FALSE;
char_u *au_name = NULL;
char_u *lang = NULL;
int updated = FALSE;
switch (eap->cmdidx)
{
@@ -8150,14 +8151,24 @@ ex_helpgrep(exarg_T *eap)
qfl->qf_ptr = qfl->qf_start;
qfl->qf_index = 1;
qf_list_changed(qfl);
qf_update_buffer(qi, NULL);
updated = TRUE;
}
if (p_cpo == empty_option)
p_cpo = save_cpo;
else
// Darn, some plugin changed the value.
{
// Darn, some plugin changed the value. If it's still empty it was
// changed and restored, need to restore in the complicated way.
if (*p_cpo == NUL)
set_option_value((char_u *)"cpo", 0L, save_cpo, 0);
free_string_option(save_cpo);
}
if (updated)
// This may open a window and source scripts, do this after 'cpo' was
// restored.
qf_update_buffer(qi, NULL);
if (au_name != NULL)
{