feat(previewer): improve bat theme

[linrongbin16]

The tmTheme

1. the .tmTheme: https://www.sublimetext.com/docs/color_schemes_tmtheme.html
2. convert tmTheme to vim:
   1. https://github.com/ku1ik/coloration/blob/eca9d85b4df41dd2399e0065714fc8715306f591/lib/coloration/writers/vim_theme_writer.rb
   2. https://gist.github.com/jojonas/fb7a26ccdaa721afa3fe
3. convert vim syntax to tmTheme: https://stackoverflow.com/questions/28592093/converting-emacs-vim-highlighting-to-textmate-for-sublimetext
4. sublime tmTheme:
   1. globals: https://www.sublimetext.com/docs/color_schemes.html#global-settings
   2. minimal coverage: https://www.sublimetext.com/docs/scope_naming.html#minimal-scope-coverage

Theme Implementations

1. base16 theme:
   1. bat base16 theme: https://github.com/sharkdp/bat/blob/master/assets/themes/base16.tmTheme
   2. vim-base16: https://github.com/chriskempson/base16-vim/
   3. textmate-base16: https://github.com/chriskempson/base16-textmate/blob/master/Themes/base16-default-dark.tmTheme
2. dracula theme:
   1. tmTheme: https://github.com/dracula/sublime/blob/09faa29057c3c39e9a45f3a51a5e262375e3bf9f/Dracula.tmTheme
   2. vim:
      • https://github.com/dracula/vim/blob/master/colors/dracula.vim
      • https://github.com/dracula/vim/blob/master/autoload/dracula.vim
3. rose-pine theme:
   1. sublime: https://github.com/rose-pine/sublime-text/blob/main/rose-pine.sublime-color-scheme
   2. vim: https://github.com/rose-pine/vim/blob/main/colors/rosepine.vim
4. catppuccin theme:
   1. sublime: https://github.com/catppuccin/sublime-text/blob/main/Catppuccin%20Mocha.sublime-color-scheme
   2. vim: https://github.com/catppuccin/vim/blob/main/colors/catppuccin_mocha.vim

Regresion test

Platforms

• windows
• macOS
• linux

Tasks

• FzfxFiles
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-R to switch between restricted/unrestricted mode, and the lines count is consistent when press multiple times.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file, and open the test/hello world.txt, test/goodbye world/goodbye.lua files.
  • Both fd and find works.
• FzfxLiveGrep
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-R to switch between restricted/unrestricted mode, and the lines count is consistent when press multiple times.
  • Use -w to match word only, use -g *.lua to search only lua files.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file, and open the test/hello world.txt, test/goodbye world/goodbye.lua files.
  • Both rg and grep works.
• FzfxBuffers
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-D to delete buffers, and delete the test/hello world.txt, test/goodbye world/goodbye.lua buffers.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file.
• FzfxGFiles
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-W to switch between workspace/current folder mode.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file.
• FzfxGLiveGrep
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file.
• FzfxGStatus
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-W to switch between workspace/current folder mode.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file.
  • Both with/without delta works.
• FzfxGBranches
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-R/CTRL-O to switch between local/remote branches.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to checkout branch.
• FzfxGCommits
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-A to switch between git repo commits/current buffer commits.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to copy commit hash.
  • Both with/without delta works.
• FzfxGBlame
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to copy commit hash.
  • Both with/without delta works.
• FzfxLspDiagnostics
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-W to switch between workspace/current buffer diagnostics.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file.
• FzfxLspDefinitions, FzfxLspTypeDefinitions, FzfxLspReferences, FzfxLspImplementations
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Go to definitions/references (this is the most 2 easiest use case when developing this lua plugin with lua_ls).
  • Press ESC to quit, ENTER to open file.
• FzfxLspIncomingCalls, FzfxLspOutgoingCalls
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Go to incoming/outgoing calls.
  • Press ESC to quit, ENTER to open file.
• FzfxCommands
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-E/CTRL-A to switch between user/ex/all vim commands.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to feed vim command.
• FzfxKeyMaps
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-O/CTRL-I/CTRL-A/CTRL-V to switch between normal/insert/visual/all vim key mappings.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to feed vim keys.
• FzfxFileExplorer
  • Press CTRL-J/CTRL-K to move down/up and preview contents.
  • Press CTRL-U/CTRL-R to switch between filter/include hidden files mode.
  • Press ALT-L/ALT-H to cd into folder and cd upper folder.
  • Use V/W/P/R variants (visual selection, cursor word, yank text, resume last).
  • Press ESC to quit, ENTER to open file, and open the test/hello world.txt, test/goodbye world/goodbye.lua files.
  • All eza/lsd/ls works.

[codecov]

Codecov Report

Attention: 134 lines in your changes are missing coverage. Please review.

Comparison is base (e5df3c5) 77.19% compared to head (4fa4ee2) 76.23%.

Files	Patch %	Lines
lua/fzfx/lib/bat_themes.lua	61.95%	113 Missing ⚠️
lua/fzfx/detail/bat_helpers.lua	47.05%	18 Missing ⚠️
lua/fzfx/helper/previewers.lua	66.66%	2 Missing ⚠️
lua/fzfx/detail/fzf_helpers.lua	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #557      +/-   ##
==========================================
- Coverage   77.19%   76.23%   -0.96%     
==========================================
  Files          48       50       +2     
  Lines        5512     5850     +338     
==========================================
+ Hits         4255     4460     +205     
- Misses       1257     1390     +133     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[savchenko]

that's exactly I am doing in this PR.
For now it looks 85% close to nvim highlighting.

This would be huge! Please keep it, at least as a function that user can call independently to generate a bat theme from their nVim colourscheme. Happy to test on my heavily modified Kanagawa theme.

[linrongbin16]

Hope there's experts who knows well on both tmTheme and Neovim highlights and save me.

I will merge this into main branch now. it's so difficult to make the highlights 100% same between nvim and bat previewer.