Juri Linkov <juri@linkov.net> writes:

>>>> Keep in mind I was the one who, while reviewing the flymake patch adding
>>>> margins, suggested that TTY frames automatically default to using
>>>> margins.  This code exists because I requested it.  I sadly did not
>>>> realize that the behavior was implemented with a buggy default value for
>>>> flymake-indicator-type, nor was it caught before release; I only just
>>>> now have received direct user complaints about the regression.
>>>
>>> That's fine.  We all make mistakes.  But the way to correct those
>>> mistakes is not to go back, it's to go forward.
>>>
>>> So I urge you to work on a fix which doesn't disable the indicators in
>>> "emacs -nw", but instead attempts to detect the situations you
>>> describe above and adapt the indicator style to them.
>>
>> If you insist, I will develop such a fix.  It will be more complex.  But
>> can we please nevertheless backport it to Emacs 30?  I really want this
>> regression to be fixed in Emacs 30.2; I've gotten multiple user
>> complaints about it.
>
> There are many improvements developed in Emacs 31 for flymake margins
> in bug#75841 and bug#76254.  But maybe better indeed to change
> the default in Emacs 30.2 (with no merge to master).

Yes, that's what I was suggesting, not merging to master.

Anyway, how about this patch, which changes the default so that the
fringe vs margin decision is made in a per-frame way?

(Opinions welcome on what to name the new default for
flymake-indicator-type)