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vim-patch:8.1.0998: getcurpos() unexpectedly changes "curswant"

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Problem:    getcurpos() unexpectedly changes "curswant".
Solution:   Save and restore "curswant". (closes vim/vim#4069)
19a66858a5
This commit is contained in:
Jan Edmund Lazo
2019-03-07 22:11:26 -05:00
parent 5f84b1dc41
commit 72e304c349
2 changed files with 24 additions and 4 deletions
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13
src/nvim/eval.c
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@@ -10086,10 +10086,23 @@ static void getpos_both(typval_T *argvars, typval_T *rettv, bool getcurpos)
tv_list_append_number(
l, (fp != NULL) ? (varnumber_T)fp->coladd : (varnumber_T)0);
if (getcurpos) {
const int save_set_curswant = curwin->w_set_curswant;
const colnr_T save_curswant = curwin->w_curswant;
const colnr_T save_virtcol = curwin->w_virtcol;
update_curswant();
tv_list_append_number(l, (curwin->w_curswant == MAXCOL
? (varnumber_T)MAXCOL
: (varnumber_T)curwin->w_curswant + 1));
// Do not change "curswant", as it is unexpected that a get
// function has a side effect.
if (save_set_curswant) {
curwin->w_set_curswant = save_set_curswant;
curwin->w_curswant = save_curswant;
curwin->w_virtcol = save_virtcol;
curwin->w_valid &= ~VALID_VIRTCOL;
}
}
}