patch 9.0.1212: cannot read back what setcellwidths() has done
Problem: Cannot read back what setcellwidths() has done.
Solution: Add getcellwidths(). (Kota Kato, closes #11837)
diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 5597077..7a706af 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -757,6 +757,7 @@
strwidth() size of string when displayed
strdisplaywidth() size of string when displayed, deals with tabs
setcellwidths() set character cell width overrides
+ getcellwidths() get 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