add wrap config option, default to false

Default to not wrapping long function names etc that are too big for the window.

If wrap=true is set, use some sane linebreak/breakindent/showbreak
options to wrap with an indent at the current indent level of the UI
tree, instead of just wrapping back to the far left side of the window.

lua/symbols-outline/config.lua

@@ -19,6 +19,7 @@ M.defaults = {
   autofold_depth = nil,
   auto_unfold_hover = true,
   fold_markers = { '', '' },
+  wrap = true,
   keymaps = { -- These keymaps can be a string or a table for multiple keys
     close = { '<Esc>', 'q' },
     goto_location = '<Cr>',

lua/symbols-outline/view.lua

@@ -27,6 +27,14 @@ function View:setup_view()
   vim.api.nvim_win_set_option(self.winnr, 'relativenumber', false)
   vim.api.nvim_win_set_option(self.winnr, 'winfixwidth', true)
   vim.api.nvim_win_set_option(self.winnr, 'list', false)
+  vim.api.nvim_win_set_option(self.winnr, 'wrap', config.options.wrap)
+  vim.api.nvim_win_set_option(self.winnr, 'linebreak', true) -- only has effect when wrap=true
+  vim.api.nvim_win_set_option(self.winnr, 'breakindent', true) -- only has effect when wrap=true
+  --  Would be nice to use ui.markers.vertical as part of showbreak to keep
+  --  continuity of the tree UI, but there's currently no way to style the
+  --  color, apart from globally overriding hl-NonText, which will potentially
+  --  mess with other theme/user settings. So just use empty spaces for now.
+  vim.api.nvim_win_set_option(self.winnr, 'showbreak', '      ') -- only has effect when wrap=true.
   -- buffer stuff
   vim.api.nvim_buf_set_name(self.bufnr, 'OUTLINE')
   vim.api.nvim_buf_set_option(self.bufnr, 'filetype', 'Outline')