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patch 8.0.1817: a timer may change v:count unexpectedly

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Problem:    A timer may change v:count unexpectedly.
Solution:   Save and restore v:count and similar variables when a timer
            callback is invoked. (closes #2897)
This commit is contained in:
Bram Moolenaar
2018-05-12 15:38:26 +02:00
parent ff3be4fe1e
commit b0f42ba60d
6 changed files with 70 additions and 0 deletions
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23
src/eval.c
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@@ -6461,6 +6461,29 @@ set_vcount(
vimvars[VV_COUNT1].vv_nr = count1;
}
/*
* Save variables that might be changed as a side effect. Used when executing
* a timer callback.
*/
void
save_vimvars(vimvars_save_T *vvsave)
{
vvsave->vv_prevcount = vimvars[VV_PREVCOUNT].vv_nr;
vvsave->vv_count = vimvars[VV_COUNT].vv_nr;
vvsave->vv_count1 = vimvars[VV_COUNT1].vv_nr;
}
/*
* Restore variables saved by save_vimvars().
*/
void
restore_vimvars(vimvars_save_T *vvsave)
{
vimvars[VV_PREVCOUNT].vv_nr = vvsave->vv_prevcount;
vimvars[VV_COUNT].vv_nr = vvsave->vv_count;
vimvars[VV_COUNT1].vv_nr = vvsave->vv_count1;
}
/*
* Set string v: variable to a copy of "val".
*/