bash hang question

[ERIC HO]

I reported a bash hang issue a few months ago. When in bash, after enter ESC 2 4
the prompt looks like this:
(arg: 24)
Pressing ';' at this point causes bash to hang.

Someone indicated it is a missed degenerate case in Readline.
 I contacted the GNU Readline maintainer who said he could
not duplicate the problem. But he does not use cygwin. Not sure whether this is cygwin
specific or not.
Thanks.

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