Bug: Colors disappear after sourcing a colorscheme file

[eemed]

Describe the bug Edit a vim colorscheme file with some hex color codes and use colorizer. Source the file with :so%. Colorization disappears and it cannot be re-enabled in anyway.

To Reproduce

• Goto a vim colorscheme file with hex color values
• use :ColorizerAttachToBuffer
• load colorscheme with :so%

Expected behavior Colors don't disappear. Or atleast should be able to use :ColorizerReloadAllBuffers to fix it.

Operating System: Debian 10

Neovim Version: 0.4.2

Colorizer Version: Paste the output of 35f1aad99c4d03217bcc80a2e16efe3ba74379a4

[rktjmp]

This is is because most themes include a hi clear, which cleans any colourizer_mb_.. highlights and colorizer wont re-do work it's already done.

Workaround

Remove colorizer from memory and recall setup after reloading your theme to enforce it into recreating those highlight groups.

:lua package.loaded['colorizer'] = nil; require('colorizer').setup(...); require('colorizer').attach_to_buffer(0)

(Technically this doesn't remove the two sub packages (colorizer.nvim and colorizer.trie), but those just contain helper functions, no in-memory state.)

Cause (?)

I haven't looked too hard at the code, but I believe because rehighlight_buffer calls to initialize_trie, which checks if the trie's already in memory and won't recreate it if so,

This means when colorizer is re-attached to any buffers, the trie basically says we've already made a group for these colours, so don't bother, just use the existing highlight, when infact those groups are now cleared of any styling.

Removing the groups manually (hi colorizier_mb_... NONE) doesn't solve the issue, so I don't believe there's any group look-up occurring, at least not directly. Somewhere in colorizer it's getting cached though (be that in the trie or elsewhere).

A "simple™" fix might be:

• Exposing some nuke_trie() function that users can call if they know they want to restart everything, or
• Packaging a command to clear lua's cache as above, or
• Causing any/one/some of the reload/reattach/rehighlight functions to clear the trie (or whatever is preventing highlight group recreation)

[g6ai]

@rktjmp That works really well!

:lua package.loaded['colorizer'] = nil; require('colorizer').setup(...); require('colorizer').attach_to_buffer(0)

So I tried to change require('colorizer').attach_to_buffer(0) to require('colorizer').reload_all_buffers(), as it is Shortcut for ColorizerAttachToBuffer on every buffer. But it doesn't work. So I'll use your solution for now.