bpo-314777: IDLE - improve rstrip entry in doc (#3602)
'Strip trailing whitespace' is not limited to spaces. Wording caters to beginners who
do know know the meaning of 'whitespace'. Multiline string literals are not skipped.
* News blurb.
diff --git a/Lib/idlelib/help.html b/Lib/idlelib/help.html
index 9005157..33ae884 100644
--- a/Lib/idlelib/help.html
+++ b/Lib/idlelib/help.html
@@ -227,7 +227,9 @@
multiline string or selected line in a string. All lines in the
paragraph will be formatted to less than N columns, where N defaults to 72.</dd>
<dt>Strip trailing whitespace</dt>
-<dd>Remove any space characters after the last non-space character of a line.</dd>
+<dd>Remove trailing space and other whitespace characters after the last
+non-whitespace character of a line by applying str.rstrip to each line,
+including lines within multiline strings.</dd>
</dl>
</div>
<div class="section" id="run-menu-editor-window-only">
@@ -779,7 +781,7 @@
The Python Software Foundation is a non-profit corporation.
<a href="https://www.python.org/psf/donations/">Please donate.</a>
<br />
- Last updated on Sep 12, 2017.
+ Last updated on Sep 15, 2017.
<a href="../bugs.html">Found a bug</a>?
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