feat: make temporary scrollback buffer columns configurable (#343)

* feat: make temporary scrollback buffer columns configurable

---------

Co-authored-by: Mike Smith <10135646+mikesmithgh@users.noreply.github.com>

Author: happenslol

README.md

@@ -653,6 +653,8 @@ The configuration precedence is `default` > `global` > `builtin` > `user` where
   checkhealth = false,
   -- string? Sets the mode for coloring the Visual highlight group in the scrollback buffer window. darken uses a darkened version of the Normal highlight group to improve readability. kitty uses the colors defined for selection_foreground and selection_background in your Kitty configuration. nvim uses the default colors defined in the Visual highlight group. reverse reverses the foreground and background colors of the visual selection.
   visual_selection_highlight_mode = 'darken',
+  -- integer? Temporary column width during get-text operation to avoid hard wrapping (larger values may impact performance), see :h columns
+  scrollback_columns = 300,
 }
 ```
 

lua/kitty-scrollback/configs/defaults.lua

@@ -57,6 +57,7 @@
 ---@field kitty_get_text KsbKittyGetText|nil options passed to get-text when reading scrollback buffer, see `kitty @ get-text --help`
 ---@field checkhealth boolean|nil if true execute :checkhealth kitty-scrollback and skip setup
 ---@field visual_selection_highlight_mode string | 'darken' | 'kitty' | 'nvim' | 'reverse' | nil
+---@field scrollback_columns integer|nil temporary column width during get-text operation to avoid hard wrapping (larger values may impact performance), see :h columns
 local default_opts = {
   callbacks = nil,
   keymaps_enabled = true,
@@ -90,6 +91,7 @@ local default_opts = {
   },
   checkhealth = false,
   visual_selection_highlight_mode = 'darken',
+  scrollback_columns = 300,
 }
 
 return default_opts

lua/kitty-scrollback/kitty_commands.lua

@@ -78,7 +78,7 @@ M.get_text_term = function(get_text_opts, on_exit_cb)
   -- current window size. Note: a larger min_cols appears to impact performance
   -- defer is used as a timing workaround because this is expected to be called right before
   -- opening the terminal
-  p.orig_columns = defer_resize_term(300)
+  p.orig_columns = defer_resize_term(opts.scrollback_columns)
 
   -- set the shell used to sh to avoid imcompatabiliies with other shells (e.g., nushell, fish, etc)
   vim.o.shell = 'sh'