Re: Use of ly:expect-warning in regtests

[Dan Eble]

On Oct 2, 2020, at 08:24, Michael Käppler <xmichael-k@web.de> wrote:
> 
> Other regtests, however, use ly:expect-warning to suppress these
> warnings and output a new warning instead, if
> the expected warning is missing.
...
> Some use ly:expect-warning in combination with ly:set-option
> 'warning-as-error.
...
> But some set it to #t:
> git grep "(ly:set-option 'warning-as-error #t" input/regression/* | wc -l
> 9

That is how to test an expected warning.

> Mostly they set it to #f:
> 
> git grep "(ly:set-option 'warning-as-error #f" input/regression/* | wc -l
> 39

I don't know the history behind that, but it doesn't seem useful.  It could be 
a mistake.
— 
Dan