fix(formatter): strip ansi from bash/code blocks

Author: cameronr

lua/opencode/ui/formatter.lua

@@ -620,7 +620,7 @@ end
 function M._format_code(output, lines, language)
   output:add_empty_line()
   output:add_line('```' .. (language or ''))
-  output:add_lines(lines)
+  output:add_lines(util.strip_ansi_lines(lines))
   output:add_line('```')
 end
 

lua/opencode/ui/output_window.lua

@@ -48,6 +48,7 @@ function M.setup(windows)
   vim.api.nvim_set_option_value('winfixheight', true, { win = windows.output_win })
   vim.api.nvim_set_option_value('winfixwidth', true, { win = windows.output_win })
   vim.api.nvim_set_option_value('signcolumn', 'yes', { scope = 'local', win = windows.output_win })
+  vim.api.nvim_set_option_value('list', false, { scope = 'local', win = windows.output_win })
 
   M.update_dimensions(windows)
   M.setup_keymaps(windows)

lua/opencode/util.lua

@@ -133,10 +133,23 @@ function M.ansi_reset()
   return '\27[0m'
 end
 
--- Remove ANSI escape sequences
---- @param str string: Input string containing ANSI escape codes
+---Remove ANSI escape sequences
+---@param str string: Input string containing ANSI escape codes
+---@return string stripped_str
 function M.strip_ansi(str)
-  return str:gsub('\27%[[%d;]*m', '')
+  return (str:gsub('\27%[[%d;]*m', ''))
+end
+
+---Strip ANSI escape sequences from all lines
+---@param lines table
+---@return table stripped_lines
+function M.strip_ansi_lines(lines)
+  local stripped_lines = {}
+  for _, line in pairs(lines) do
+    table.insert(stripped_lines, M.strip_ansi(line))
+  end
+
+  return stripped_lines
 end
 
 --- Convert a datetime to a human-readable "time ago" format