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Re: 31395511: "Don’t attempt to modify constant strings"


From: Paul Eggert
Subject: Re: 31395511: "Don’t attempt to modify constant strings"
Date: Wed, 3 Jun 2020 18:19:54 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0

On 6/3/20 5:43 PM, Paul Eggert wrote:
> On 6/3/20 4:48 PM, João Távora wrote:
>> I think I'd rather this previous behavior were retained, or at least
>> achievable by request.
> 
> It's tricky, as make-text-button in emacs-27 (and earlier) modifies its string
> argument, which is buggy because string constants are not always unique.

On second thought, I'll work on coming up with a better workaround for the
problem along the lines I suggested in my previous message: make-text-button can
copy the button label string only if the string's not mutable. I hope this helps
with SLY (as I hope SLY is not trying to modify string literals...). In the
meantime I've reverted the change by installing the attached patch; this means
the bug I mentioned in my previous message remains unfixed.

Attachment: 0001-Revert-make-text-button-string-copy.patch
Description: Text Data


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