patch 8.2.1517: cannot easily get the character under the cursor
Problem: Cannot easily get the character under the cursor.
Solution: Add the {chars} argument to strpart().
diff --git a/src/evalfunc.c b/src/evalfunc.c
index c8747e2..fcfd4b1 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -950,7 +950,7 @@
{"stridx", 2, 3, FEARG_1, ret_number, f_stridx},
{"string", 1, 1, FEARG_1, ret_string, f_string},
{"strlen", 1, 1, FEARG_1, ret_number, f_strlen},
- {"strpart", 2, 3, FEARG_1, ret_string, f_strpart},
+ {"strpart", 2, 4, FEARG_1, ret_string, f_strpart},
{"strptime", 2, 2, FEARG_1, ret_number,
#ifdef HAVE_STRPTIME
f_strptime
@@ -8270,10 +8270,8 @@
else
len = slen - n; // default len: all bytes that are available.
- /*
- * Only return the overlap between the specified part and the actual
- * string.
- */
+ // Only return the overlap between the specified part and the actual
+ // string.
if (n < 0)
{
len += n;
@@ -8286,6 +8284,16 @@
else if (n + len > slen)
len = slen - n;
+ if (argvars[2].v_type != VAR_UNKNOWN && argvars[3].v_type != VAR_UNKNOWN)
+ {
+ int off;
+
+ // length in characters
+ for (off = n; off < slen && len > 0; --len)
+ off += mb_ptr2len(p + off);
+ len = off - n;
+ }
+
rettv->v_type = VAR_STRING;
rettv->vval.v_string = vim_strnsave(p + n, len);
}