Add support for Alaccrity terminal

[khughitt]

Currently, colorizer does not appear to be loaded at all when running (Neo)vim inside an Alacritty term.

[lilydjwg]

It works for me with vim 8.1.1933 and alacrity 0.3.3.

Try :echo &t_Co and see if you get 256.

[khughitt]

Good catch! That indeed appears to be the issue..

I'm not sure why t_Co is set to "16" (in my nvim config, I check to make sure $TERM != "linux", and if so, do set t_Co = 256.. TERM is not "linux" (I checked), so something else is keeping it from being set properly. I'll do a bit more digging around.

Also, apologies for not providing any version info in the original issue description! For clarification, I am testing this on:

neovim:

NVIM v0.4.0-1750-gce9367c25
Build type: RelWithDebInfo
LuaJIT 2.0.5
Compilation: /usr/bin/cc -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -O2 -g -DMIN_LOG_LEVEL=3 -Og -g -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fdiagnostics-color=auto -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -I/home/keith/.cache/yay/neovim-git/src/neovim-git/build/config -I/home/keith/.cache/yay/neovim-git/src/neovim-git/src -I/usr/include -I/home/keith/.cache/yay/neovim-git/src/neovim-git/build/src/nvim/auto -I/home/keith/.cache/yay/neovim-git/src/neovim-git/build/include
Compiled by keith@titan

Features: +acl +iconv +tui
See ":help feature-compile"

alaccrity: v0.3.3