#14804: Remove [] around optional arguments with default values
Mostly just mechanical removal of []. In some rare cases I've pulled the
default value up into the argument list.
diff --git a/Doc/library/parser.rst b/Doc/library/parser.rst
index 554229f..e2d4523 100644
--- a/Doc/library/parser.rst
+++ b/Doc/library/parser.rst
@@ -200,7 +200,7 @@
information is omitted if the flag is false or omitted.
-.. function:: compilest(ast[, filename='<syntax-tree>'])
+.. function:: compilest(ast, filename='<syntax-tree>')
.. index:: builtin: eval