Re: Check for ANSI compliance

[Ludovic Courtès]

Hi,

Christian Miller <christian.miller@dadoes.de> skribis:

> I use the Emacs compilation mode (M-x compile).
>
> For example, the following "M-x compile RET guix build does-not-exist
> RET" would result to the following:
>
> -*- mode: compilation; default-directory: "~/" -*-
> Compilation started at Wed Jan 17 19:18:57
>
> guix build does-not-exist
> guix build: error: does-not-exist: unknown package
>
> Compilation exited abnormally with code 1 at Wed Jan 17 19:18:57
>
> It is not only visually, but it actually breaks a feature of the mode,
> too.  The unknown package error is not detected as an error by the
> mode.  I also had a case where it detected warnings as errors.
>
> Could we check for ANSI compliance instead of assuming it's presence?

That used to be the case until commit
672d3d4a87839b0692c307df0edb66cd16bcbf1a, which enabled colors even when
‘INSIDE_EMACS’ is set.

Pierre, do you remember what the rationale was?

Ludo’.