patch 8.2.1535: it is not possible to specify cell widths of characters
Problem: It is not possible to specify cell widths of characters.
Solution: Add setcellwidths().
diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 459f6b0..bcd58c9 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -611,6 +611,7 @@
strchars() length of a string in characters
strwidth() size of string when displayed
strdisplaywidth() size of string when displayed, deals with tabs
+ setcellwidths() set character cell width overrides
substitute() substitute a pattern match with a string
submatch() get a specific match in ":s" and substitute()
strpart() get part of a string using byte index