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bug#21391: 24.5; `thing-at-point' should return a string

From: Dmitry Gutov
Subject: bug#21391: 24.5; `thing-at-point' should return a string
Date: Mon, 7 Nov 2016 21:51:23 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:50.0) Gecko/20100101 Thunderbird/50.0

On 07.11.2016 21:47, Eli Zaretskii wrote:

When thing is a number? Maybe. I don't imagine it's used very often.

But previously it could be used.  After this change, it would be

The callers will need to switch to `number-at-point', probably. The resulting code will work with both new and older versions of Emacs.

It's pretty clearly a bug: most other "things" behave otherwise (list,
sexp, symbol). I'd very much rather we didn't retain conceptual problems
like that just for the sake of compatibility.

Not sure which behavior you have in mind.  The removal of properties?
Or something else?

Returning something other than a string or nil from thing-at-point.

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