bug#26945: Feature request: the exclusion list used by indent-according-to-mode should be customizable

[Clément Pit--Claudel]

Hi bug-gnu-emacs,

Many programming modes don't have a single possible indentation, and instead 
use a custom indent-line-function to let users cycle through reasonable 
indentation.
When that function is exactly indent-relative or indent-relative-maybe, 
indent-according-to-mode ignores it:

> However, if the value of that variable is `indent-relative' or
> `indent-relative-maybe', handle it specially (since those functions
> are used for tabbing); in that case, indent by aligning to the
> previous non-blank line.

It would be great to make the list of ignored functions extensible — this way, 
modes that use a variant of indent-relative could recover an appropriate 
behavior for indent-according-to-mode.

Clément.

signature.asc
Description: OpenPGP digital signature