Re: Issues with history substitution and its documentation

From	Chet Ramey <chet.ramey@case.edu>
Newsgroups	gnu.bash.bug
Subject	Re: Issues with history substitution and its documentation
Date	2019-11-18 11:14 -0500
Message-ID	<mailman.1859.1574093680.13325.bug-bash@gnu.org> (permalink)
References	<CA+VKLw-WX8zUz06MZ9ThuMhUuW97aJ5ted8oSfJSvrVJBLW3hA@mail.gmail.com> <CA+VKLw_XMx1xjiFt-Tio8S+Mdt_AeS9v64SuMYYMdDdDnJFSBQ@mail.gmail.com> <CA+VKLw_hceb_xzu7kzTJAVuegWzqxJDa8xw4ja5TOBPpOWvRDQ@mail.gmail.com> <643b95db-ca1f-98ff-e8c5-c79581d909d4@case.edu>

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On 11/3/19 9:18 AM, Jim Monte wrote:
> Two more documentation issues I have found are below.
> 
> It appears that an empty substring event designator uses the string of the
> previous substring event designator if none is provided and does not find
> the event if there is no previous string.

Thanks for the report. I'll add text documenting the behavior. (FWIW, csh
doesn't document it, either.)


> An empty "old" string in a substitute word modifier uses the previous "old"
> if none is given, but uses an empty string if new is empty. If there was no
> previous "old" string, an error is reported.

As I said in a previous message, this is documented in the man page but
omitted in the texinfo manual.


-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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Re: Issues with history substitution and its documentation Chet Ramey <chet.ramey@case.edu> - 2019-11-18 11:14 -0500

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