This refactor is about improving how Emacs deals with errors.
A large net is now cast at startup to catch possible errors, produce
more helpful error messages, and localize the damage. Significantly
reducing the risk of later modules not loading (and leaving you
stranded in a half-broken Emacs session).
The DOOM core files are an exception. If something messes up in there,
it *should* choke.
+ use-package will now report missing packages or slow-loading/broken
def-package! configurations.
+ Persp-mode no longer (inadvertantly) hides buffers that pop up at
startup, like the *Warnings*, *Backtrace* or debugger buffers.
+ `make autoloads` (or doom/reload-autoloads) now produces a slightly
more informative error message if an error occurs while building the
autoloads file.
+ Error handling for package management is *slightly* better now; error
messages now include the type of error; this needs work.
+ enable lexical-scope everywhere (lexical-binding = t): ~5-10% faster
startup; ~5-20% general boost
+ reduce consing, function calls & garbage collection by preferring
cl-loop & dolist over lambda closures (for mapc[ar], add-hook, and
various cl-lib filter/map/reduce functions) -- where possible
+ prefer functions with dedicated opcodes, like assq (see byte-defop's
in bytecomp.el for more)
+ prefer pcase & cond (faster) over cl-case
+ general refactor for code readability
+ ensure naming & style conventions are adhered to
+ appease byte-compiler by marking unused variables with underscore
+ defer minor mode activation to after-init, emacs-startup or
window-setup hooks; a customization opportunity for users + ensures
custom functionality won't interfere with startup.
