Emacs 26.1 will introduce a new native line numbers feature:
"display-line-numbers". It includes relative line numbers, is faster than
current linum-mode, and doesn't use the margin area (it has its own area). So
yeah, we want to use the new feature when possible.
No changes are required on the user side, except for Emacs 26 users are
recommended to remove nlinum layer from their configuration (if they have
enabled it).
With this change:
- Emacs 26:
- uses display-line-numbers by default.
- linum and linum-relative packages are excluded.
- Emacs 25:
- does NOT use display-line-numbers.
- continues to use linum and linum-relative.
- nlinum layer:
- can still be used as before in Emacs 25.
- is NOT recommended in Emacs 26, but can be used.
- when enabled, excludes display-line-numbers.
Also contains some bug fixes:
Fixes a bug where setting `dostpacemacs-line-numbers` to `t` or `relative`
enabled line numbers in every buffer, instead of only in buffers that derive
from prog-mode and text-mode.
Likewise fixes a bug where specifying `:enabled-for-modes nil` (or not
specifying `:enabled-for-modes` at all) in `dotspacemacs-line-numbers` settings
meant "enable in all modes" instead of "enable in modes derived from prog-mode
or text-mode".
Because of this change, also adds a way for users to enable line numbers
in *all* buffers.
Removes check for special buffer. All our current checks should be enough to
enable line numbers only where it makes sense. Disabling in all special buffers
is not necessary.
This reverts commit 29c78ce841 and all other fixes
that have been made afterwards.
The motivation is that use-package is seen by many as a replacement for
`require`. Is use-package always defer the loading of packages then is breaks
this use case, this does not respect POLA so even if it was making Spacemacs
loading faster (up to 3s faster on some startup on my machine) we just cannot
use it, it would be irresponsible. Spacemacs should be easy to use, loading
performance will come with time but it is not a priority.
To use nlinum + nlinum-relative add the nlinum layer
Note: there are still work to do on nlinum-relative, at some point we
may replace linum by nlinum completely.
