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patch 8.2.5034: there is no way to get the byte index from a virtual column

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Problem:    There is no way to get the byte index from a virtual column.
Solution:   Add virtcol2col(). (Yegappan Lakshmanan, closes #10477,
            closes #10098)
This commit is contained in:
Bram Moolenaar
2022-05-27 21:58:00 +01:00
parent 968443efb5
commit 5a6ec10cc8
7 changed files with 89 additions and 0 deletions
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33
src/move.c
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@@ -1322,6 +1322,39 @@ f_screenpos(typval_T *argvars UNUSED, typval_T *rettv)
dict_add_number(dict, "curscol", ccol);
dict_add_number(dict, "endcol", ecol);
}
/*
* "virtcol2col({winid}, {lnum}, {col})" function
*/
void
f_virtcol2col(typval_T *argvars UNUSED, typval_T *rettv)
{
win_T *wp;
linenr_T lnum;
int screencol;
int error = FALSE;
rettv->vval.v_number = -1;
if (check_for_number_arg(argvars, 0) == FAIL
|| check_for_number_arg(argvars, 1) == FAIL
|| check_for_number_arg(argvars, 2) == FAIL)
return;
wp = find_win_by_nr_or_id(&argvars[0]);
if (wp == NULL)
return;
lnum = tv_get_number_chk(&argvars[1], &error);
if (error || lnum < 0 || lnum > wp->w_buffer->b_ml.ml_line_count)
return;
screencol = tv_get_number_chk(&argvars[2], &error);
if (error || screencol < 0)
return;
rettv->vval.v_number = vcol2col(wp, lnum, screencol);
}
#endif
/*