Allow preview width to be configured

lua/telescope/config.lua

@@ -80,6 +80,10 @@ local layout_config_defaults = {
  center = {
  preview_cutoff = 40,
  },
+
+ cursor = {
+ preview_cutoff = 40,
+ }
 }
 
 local layout_config_description = string.format([[

lua/telescope/pickers/layout_strategies.lua

@@ -413,6 +413,8 @@ end)
 --- └──────────────────────────────────────────────────┘
 --- </pre>
 layout_strategies.cursor = make_documented_layout("cursor", vim.tbl_extend("error", shared_options, {
+ preview_width = { "Change the width of Telescope's preview window", "See |resolver.resolve_width()|", },
+ preview_cutoff = "When columns are less than this value, the preview will be disabled",
 }), function(self, max_columns, max_lines, layout_config)
  local initial_options = p_window.get_initial_window_options(self)
  local preview = initial_options.preview
@@ -433,11 +435,17 @@ layout_strategies.cursor = make_documented_layout("cursor", vim.tbl_extend("erro
  results.height = height
  preview.height = results.height + prompt.height + bs
 
- -- If previewer is activated, it should take 2/3 of the space (width)
- local width_left = self.previewer and math.floor(max_width / 3) or max_width
- prompt.width = width_left
+ if self.previewer and max_columns >= layout_config.preview_cutoff then
+ preview.width = resolve.resolve_width(if_nil(layout_config.preview_width, function(_, cols)
+ -- By default, previewer takes 2/3 of the layout
+ return 2 * math.floor(max_width / 3)
+ end))(self, max_width, max_lines)
+ else
+ preview.width = 0
+ end
+
+ prompt.width = max_width - preview.width
  results.width = prompt.width
- preview.width = self.previewer and (2*width_left) or 0
 
  local total_height = preview.height + (bs*2)
  local total_width = prompt.width + (bs*2) + preview.width + bs