patch 8.1.1723: heredoc assignment has no room for new features
Problem: Heredoc assignment has no room for new features. (FUJIWARA Takuya)
Solution: Require the marker does not start with a lower case character.
(closes #4705)
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 1fa42b3..6a44c9f 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -11386,7 +11386,8 @@
Like above, but append/add/subtract the value for each
|List| item.
- *:let=<<* *:let-heredoc* *E990* *E991*
+ *:let=<<* *:let-heredoc*
+ *E990* *E991* *E172* *E221*
:let {var-name} =<< [trim] {marker}
text...
text...
@@ -11394,11 +11395,10 @@
Set internal variable {var-name} to a List containing
the lines of text bounded by the string {marker}.
{marker} must not contain white space.
+ {marker} cannot start with a lower case character.
The last line should end only with the {marker} string
without any other character. Watch out for white
space after {marker}!
- If {marker} is not supplied, then "." is used as the
- default marker.
Without "trim" any white space characters in the lines
of text are preserved. If "trim" is specified before