Applied PR390

.gitignore

@@ -7,3 +7,5 @@ build*
 subprojects/lua
 subprojects/libagg
 sybprojects/lua
+lite
+.config/

Makefile.os4

@@ -0,0 +1,25 @@
+#
+# Project: Lite XL
+#
+# Created on: 26-12-2021 
+#
+.PHONY: build release
+
+default: build
+
+build:
+	@sh os4build.sh
+
+release:
+	mkdir -p release/LiteXL
+	cp release_files/* release/LiteXL/ -r
+	mv release/LiteXL/LiteXL.info release/
+	cp data release/LiteXL/ -r
+	cp doc release/LiteXL/ -r
+	cp lite release/LiteXL/
+	strip release/LiteXL/lite
+	cp README.md release/LiteXL/
+	cp README_OS4.md release/LiteXL/
+	cp LICENSE release/LiteXL/
+	lha -aeqr3 a LiteXL.lha release/
+

README_OS4.md

@@ -0,0 +1,93 @@
+# Lite XL for AmigaOS 4.1 FE
+
+Lite XL is coming to AmigaOS 4.1.
+
+A few things are not quite working. Please have a look at the "Known issues" 
+section below.
+
+## Installation
+You can extract the Lite XL archive wherever you want and run the *lite* 
+editor.
+
+## Configuration folder
+This editor creates a `.config` folder where the configuration is saved, as 
+well as plugins, themes etc.. By default this AmigaOS 4.1 FE version uses the
+executable folder, but if you want to ovveride it, create an ENV variable 
+named `HOME` and set there your path. 
+
+You can check if there is one already set by executing the following command
+in a shell
+```
+GetEnv HOME
+```
+If there is one set, then you will see the path at the output.
+
+Otherwise, you can set your home path be executing the following command. 
+Change the path to the one of your preference.
+```
+SetEnv SAVE HOME "Sys:home/"
+```
+
+
+## Know issues
+You can find the known issues at 
+https://git.walkero.gr/walkero/lite-xl/issues
+
+
+# Changelog
+
+## [1.16.12.7] - future
+## Added
+- Added config.scroll_past_end that when its true lets the user scroll
+  further than the end of the file. By default is set to true.
+- Added "SDL_RENDERER_ACCELERATED" and "SDL_RENDERER_PRESENTVSYNC" on 
+  SDL_CreateRenderer() since this reduces the CPU usage when the user
+  scrolls and seems to work pretty good on my systems (X5000, A1222 and 
+  microAmigaOne). This is exeprimental. If this brings problems on your
+  system, you can disable them using SDL ENV variable, like below:
+  setenv SDL_RENDER_VSYNC 0
+  setenv SDL_RENDER_DRIVER "software"
+
+## [1.16.12.6] - 2022-01-04
+### Fixed
+- Fixed a problem introduced in previous version when LiteXL was executed 
+  from the root path of a partition or from ram disk (#13)
+
+## [1.16.12.5] - 2022-01-03
+### Changed
+- Changed the Gfx memory leak solution to a fix that was applied by the
+  editor development team on Lua scripts at a later version. Less custom
+  code for AmigaOS 4 port.
+- Now, when return from fullscreen, there is no extra header visible
+  at the top of the window content
+
+### Fixed
+- Fixed the assertion error and crash when the window is resized (#2)
+- Fixed the resolution on fullscreen toggle to be like the workbench (#4)
+- Fixed loading the current folder from terminal using the dot, like 
+  `lite .` or without it (#3)
+
+## [1.16.12.4] - 2021-12-31
+### Fixed
+- Fixed the Gfx memory leak. Now LiteXL frees the reserved memory from the
+  gfx card.
+
+## [1.16.12.3] - 2021-12-29
+### Changed
+- Compiled with an experimental version of the latest Anti-Grain Geometry
+  library. This is might have issues and crash LiteXL
+
+## [1.16.12.2] - 2021-12-26
+### Added
+- Added Amiga version. This version of LiteXL is based on v1.16.12 source code 
+  which will not change. I will use the fourth digit to distinguish different 
+  AmigaOS 4 releases, until a new port of the latest available source (v2.x) 
+  is made.
+
+### Fixed
+- The keyboard shortcuts are now working
+
+### Changed
+- Now the `HOME` ENV variable is optional. If this is not set, the LiteXL 
+  folder will be used to create user's `.config` folder
+

data/core/commands/core.lua

@@ -6,6 +6,7 @@ local LogView = require "core.logview"
 
 
 local fullscreen = false
+local restore_title_view = false
 
 local function suggest_directory(text)
   text = common.home_expand(text)
@@ -27,9 +28,12 @@ command.add(nil, {
 
   ["core:toggle-fullscreen"] = function()
     fullscreen = not fullscreen
+    if fullscreen then
+      restore_title_view = core.title_view.visible
+    end
     system.set_window_mode(fullscreen and "fullscreen" or "normal")
-    core.show_title_bar(not fullscreen)
-    core.title_view:configure_hit_test(not fullscreen)
+    core.show_title_bar(not fullscreen and restore_title_view)
+    core.title_view:configure_hit_test(not fullscreen and restore_title_view)
   end,
 
   ["core:reload-module"] = function()

data/core/commands/doc.lua

@@ -24,13 +24,16 @@ local function get_indent_string()
 end
 
 
-local function doc_multiline_selection(sort)
-  local line1, col1, line2, col2, swap = doc():get_selection(sort)
-  if line2 > line1 and col2 == 1 then
+local function doc_multiline_selections(sort)
+  local iter, state, idx, line1, col1, line2, col2 = doc():get_selections(sort)
+  return function() 
+    idx, line1, col1, line2, col2 = iter(state, idx)
+    if idx and line2 > line1 and col2 == 1 then
       line2 = line2 - 1
       col2 = #doc().lines[line2]
     end
-  return line1, col1, line2, col2, swap
+    return idx, line1, col1, line2, col2
+  end
 end
 
 local function append_line_if_last_line(line)
@@ -39,7 +42,6 @@ local function append_line_if_last_line(line)
   end
 end
 
-
 local function save(filename)
   doc():save(filename and core.normalize_to_project_dir(filename))
   local saved_filename = doc().filename
@@ -47,55 +49,31 @@ local function save(filename)
   core.log("Saved \"%s\"", saved_filename)
 end
 
--- returns the size of the original indent, and the indent
--- in your config format, rounded either up or down
-local function get_line_indent(line, rnd_up)
-  local _, e = line:find("^[ \t]+")
-  local soft_tab = string.rep(" ", config.indent_size)
-  if config.tab_type == "hard" then
-    local indent = e and line:sub(1, e):gsub(soft_tab, "\t") or ""
-    return e, indent:gsub(" +", rnd_up and "\t" or "")
-  else
-    local indent = e and line:sub(1, e):gsub("\t", soft_tab) or ""
-    local number = #indent / #soft_tab
-    return e, indent:sub(1,
-      (rnd_up and math.ceil(number) or math.floor(number))*#soft_tab)
+local function cut_or_copy(delete)
+  local full_text = ""
+  for idx, line1, col1, line2, col2 in doc():get_selections() do
+    if line1 ~= line2 or col1 ~= col2 then
+      local text = doc():get_text(line1, col1, line2, col2)
+      if delete then
+        doc():delete_to_cursor(idx, 0)
       end
+      full_text = full_text == "" and text or (full_text .. "\n" .. text)
+      doc().cursor_clipboard[idx] = text
+    else
+      doc().cursor_clipboard[idx] = ""
+    end
+  end
+  system.set_clipboard(full_text)
 end
 
--- un/indents text; behaviour varies based on selection and un/indent.
--- * if there's a selection, it will stay static around the
---   text for both indenting and unindenting.
--- * if you are in the beginning whitespace of a line, and are indenting, the
---   cursor will insert the exactly appropriate amount of spaces, and jump the
---   cursor to the beginning of first non whitespace characters
--- * if you are not in the beginning whitespace of a line, and you indent, it
---   inserts the appropriate whitespace, as if you typed them normally.
--- * if you are unindenting, the cursor will jump to the start of the line,
---   and remove the appropriate amount of spaces (or a tab).
-local function indent_text(unindent)
-  local text = get_indent_string()
-  local line1, col1, line2, col2, swap = doc_multiline_selection(true)
-  local _, se = doc().lines[line1]:find("^[ \t]+")
-  local in_beginning_whitespace = col1 == 1 or (se and col1 <= se + 1)
-  if unindent or doc():has_selection() or in_beginning_whitespace then
-    local l1d, l2d = #doc().lines[line1], #doc().lines[line2]
-    for line = line1, line2 do
-      local e, rnded = get_line_indent(doc().lines[line], unindent)
-      doc():remove(line, 1, line, (e or 0) + 1)
-      doc():insert(line, 1,
-        unindent and rnded:sub(1, #rnded - #text) or rnded .. text)
+local function split_cursor(direction)
+  local new_cursors = {}
+  for _, line1, col1 in doc():get_selections() do
+    if line1 + direction >= 1 and line1 + direction <= #doc().lines then
+      table.insert(new_cursors, { line1 + direction, col1 })
     end
-    l1d, l2d = #doc().lines[line1] - l1d, #doc().lines[line2] - l2d
-    if (unindent or in_beginning_whitespace) and not doc():has_selection() then
-      local start_cursor = (se and se + 1 or 1) + l1d or #(doc().lines[line1])
-      doc():set_selection(line1, start_cursor, line2, start_cursor, swap)
-    else
-      doc():set_selection(line1, col1 + l1d, line2, col2 + l2d, swap)
-    end
-  else
-    doc():text_input(text)
   end
+  for i,v in ipairs(new_cursors) do doc():add_selection(v[1], v[2]) end
 end
 
 local commands = {
@@ -108,65 +86,66 @@ local commands = {
   end,
 
   ["doc:cut"] = function()
-    if doc():has_selection() then
-      local text = doc():get_text(doc():get_selection())
-      system.set_clipboard(text)
-      doc():delete_to(0)
-    end
+    cut_or_copy(true)
   end,
 
   ["doc:copy"] = function()
-    if doc():has_selection() then
-      local text = doc():get_text(doc():get_selection())
-      system.set_clipboard(text)
-    end
+    cut_or_copy(false)
   end,
 
   ["doc:paste"] = function()
-    doc():text_input(system.get_clipboard():gsub("\r", ""))
+    for idx, line1, col1, line2, col2 in doc():get_selections() do
+      local value = doc().cursor_clipboard[idx] or system.get_clipboard()
+      doc():text_input(value:gsub("\r", ""), idx)
+    end
   end,
 
   ["doc:newline"] = function()
-    local line, col = doc():get_selection()
+    for idx, line, col in doc():get_selections(false, true) do
       local indent = doc().lines[line]:match("^[\t ]*")
       if col <= #indent then
         indent = indent:sub(#indent + 2 - col)
       end
-    doc():text_input("\n" .. indent)
+      doc():text_input("\n" .. indent, idx)
+    end
   end,
 
   ["doc:newline-below"] = function()
-    local line = doc():get_selection()
+    for idx, line in doc():get_selections(false, true) do
       local indent = doc().lines[line]:match("^[\t ]*")
       doc():insert(line, math.huge, "\n" .. indent)
-    doc():set_selection(line + 1, math.huge)
+      doc():set_selections(idx, line + 1, math.huge)
+    end
   end,
 
   ["doc:newline-above"] = function()
-    local line = doc():get_selection()
+    for idx, line in doc():get_selections(false, true) do
       local indent = doc().lines[line]:match("^[\t ]*")
       doc():insert(line, 1, indent .. "\n")
-    doc():set_selection(line, math.huge)
+      doc():set_selections(idx, line, math.huge)
+    end
   end,
 
   ["doc:delete"] = function()
-    local line, col = doc():get_selection()
-    if not doc():has_selection() and doc().lines[line]:find("^%s*$", col) then
-      doc():remove(line, col, line, math.huge)
+    for idx, line1, col1, line2, col2 in doc():get_selections() do
+      if line1 == line2 and col1 == col2 and doc().lines[line1]:find("^%s*$", col1) then
+        doc():remove(line1, col1, line1, math.huge)
+      end
+      doc():delete_to_cursor(idx, translate.next_char)
     end
-    doc():delete_to(translate.next_char)
   end,
 
   ["doc:backspace"] = function()
-    local line, col = doc():get_selection()
-    if not doc():has_selection() then
-      local text = doc():get_text(line, 1, line, col)
+    for idx, line1, col1, line2, col2 in doc():get_selections() do
+      if line1 == line2 and col1 == col2 then
+        local text = doc():get_text(line1, 1, line1, col1)
         if #text >= config.indent_size and text:find("^ *$") then
-        doc():delete_to(0, -config.indent_size)
+          doc():delete_to_cursor(idx, 0, -config.indent_size)
           return
         end
       end
-    doc():delete_to(translate.previous_char)
+      doc():delete_to_cursor(idx, translate.previous_char)
+    end
   end,
 
   ["doc:select-all"] = function()
@@ -178,21 +157,33 @@ local commands = {
     doc():set_selection(line, col)
   end,
   
+  
+  ["doc:indent"] = function()
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
+      local l1, c1, l2, c2 = doc():indent_text(false, line1, col1, line2, col2)
+      if l1 then
+        doc():set_selections(idx, l1, c1, l2, c2)
+      end
+    end
+  end,
+
   ["doc:select-lines"] = function()
-    local line1, _, line2, _, swap = doc():get_selection(true)
+    for idx, line1, _, line2 in doc():get_selections(true) do
       append_line_if_last_line(line2)
-    doc():set_selection(line1, 1, line2 + 1, 1, swap)
+      doc():set_selections(idx, line1, 1, line2 + 1, 1, swap)
+    end
   end,
 
   ["doc:select-word"] = function()
-    local line1, col1 = doc():get_selection(true)
+    for idx, line1, col1 in doc():get_selections(true) do
       local line1, col1 = translate.start_of_word(doc(), line1, col1)
       local line2, col2 = translate.end_of_word(doc(), line1, col1)
-    doc():set_selection(line2, col2, line1, col1)
+      doc():set_selections(idx, line2, col2, line1, col1)
+    end
   end,
 
   ["doc:join-lines"] = function()
-    local line1, _, line2 = doc():get_selection(true)
+    for idx, line1, col1, line2, col2 in doc():get_selections(true) do
       if line1 == line2 then line2 = line2 + 1 end
       local text = doc():get_text(line1, 1, line2, math.huge)
       text = text:gsub("(.-)\n[\t ]*", function(x)
@@ -200,54 +191,69 @@ local commands = {
       end)
       doc():insert(line1, 1, text)
       doc():remove(line1, #text + 1, line2, math.huge)
-    if doc():has_selection() then
-      doc():set_selection(line1, math.huge)
+      if line1 ~= line2 or col1 ~= col2 then
+        doc():set_selections(idx, line1, math.huge)
+      end
     end
   end,
 
   ["doc:indent"] = function()
-    indent_text()
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
+      local l1, c1, l2, c2 = doc():indent_text(false, line1, col1, line2, col2)
+      if l1 then
+        doc():set_selections(idx, l1, c1, l2, c2)
+      end
+    end
   end,
 
   ["doc:unindent"] = function()
-    indent_text(true)
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
+      local l1, c1, l2, c2 = doc():indent_text(true, line1, col1, line2, col2)
+      if l1 then
+        doc():set_selections(idx, l1, c1, l2, c2)
+      end
+    end
   end,
 
   ["doc:duplicate-lines"] = function()
-    local line1, col1, line2, col2, swap = doc_multiline_selection(true)
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
       append_line_if_last_line(line2)
       local text = doc():get_text(line1, 1, line2 + 1, 1)
       doc():insert(line2 + 1, 1, text)
       local n = line2 - line1 + 1
-    doc():set_selection(line1 + n, col1, line2 + n, col2, swap)
+      doc():set_selections(idx, line1 + n, col1, line2 + n, col2, swap)
+    end
   end,
 
   ["doc:delete-lines"] = function()
-    local line1, col1, line2 = doc_multiline_selection(true)
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
       append_line_if_last_line(line2)
       doc():remove(line1, 1, line2 + 1, 1)
-    doc():set_selection(line1, col1)
+      doc():set_selections(idx, line1, col1)
+    end
   end,
 
   ["doc:move-lines-up"] = function()
-    local line1, col1, line2, col2, swap = doc_multiline_selection(true)
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
       append_line_if_last_line(line2)
       if line1 > 1 then
         local text = doc().lines[line1 - 1]
         doc():insert(line2 + 1, 1, text)
         doc():remove(line1 - 1, 1, line1, 1)
-      doc():set_selection(line1 - 1, col1, line2 - 1, col2, swap)
+        doc():set_selections(idx, line1 - 1, col1, line2 - 1, col2)
+      end
     end
   end,
 
   ["doc:move-lines-down"] = function()
-    local line1, col1, line2, col2, swap = doc_multiline_selection(true)
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
       append_line_if_last_line(line2 + 1)
       if line2 < #doc().lines then
         local text = doc().lines[line2 + 1]
         doc():remove(line2 + 1, 1, line2 + 2, 1)
         doc():insert(line1, 1, text)
-      doc():set_selection(line1 + 1, col1, line2 + 1, col2, swap)
+        doc():set_selections(idx, line1 + 1, col1, line2 + 1, col2)
+      end
     end
   end,
 
@@ -256,7 +262,7 @@ local commands = {
     if not comment then return end
     local indentation = get_indent_string()
     local comment_text = comment .. " "
-    local line1, _, line2 = doc_multiline_selection(true)
+    for idx, line1, _, line2 in doc_multiline_selections(true) do
       local uncomment = true
       local start_offset = math.huge
       for line = line1, line2 do
@@ -280,6 +286,7 @@ local commands = {
           doc():insert(line, start_offset, comment_text)
         end
       end
+    end
   end,
 
   ["doc:upper-case"] = function()
@@ -363,6 +370,32 @@ local commands = {
       end
     end, common.path_suggest)
   end,
+  
+
+  ["file:delete"] = function()
+    local filename = doc().abs_filename
+    if not filename then
+      core.error("Cannot remove unsaved doc")
+      return
+    end
+    for i,docview in ipairs(core.get_views_referencing_doc(doc())) do
+      local node = core.root_view.root_node:get_node_for_view(docview)
+      node:close_view(core.root_view, docview)
+    end
+    os.remove(filename)
+    core.log("Removed \"%s\"", filename)
+  end,
+
+  ["doc:create-cursor-previous-line"] = function()
+    split_cursor(-1)
+    doc():merge_cursors()
+  end,
+  
+  ["doc:create-cursor-next-line"] = function()
+    split_cursor(1)
+    doc():merge_cursors()
+  end
+
 }
 
 
@@ -392,21 +425,21 @@ for name, fn in pairs(translations) do
 end
 
 commands["doc:move-to-previous-char"] = function()
-  if doc():has_selection() then
-    local line, col = doc():get_selection(true)
-    doc():set_selection(line, col)
-  else
-    doc():move_to(translate.previous_char)
+  for idx, line1, col1, line2, col2 in doc():get_selections(true) do
+    if line1 ~= line2 or col1 ~= col2 then
+      doc():set_selections(idx, line1, col1)
     end
+  end
+  doc():move_to(translate.previous_char)
 end
 
 commands["doc:move-to-next-char"] = function()
-  if doc():has_selection() then
-    local _, _, line, col = doc():get_selection(true)
-    doc():set_selection(line, col)
-  else
-    doc():move_to(translate.next_char)
+  for idx, line1, col1, line2, col2 in doc():get_selections(true) do
+    if line1 ~= line2 or col1 ~= col2 then
+      doc():set_selections(idx, line2, col2)
     end
+  end
+  doc():move_to(translate.next_char)
 end
 
 command.add("core.docview", commands)

data/core/common.lua

@@ -54,6 +54,26 @@ function common.color(str)
 end
 
 
+function common.splice(t, at, remove, insert)
+  insert = insert or {}
+  local offset = #insert - remove
+  local old_len = #t
+  if offset < 0 then
+    for i = at - offset, old_len - offset do
+      t[i + offset] = t[i]
+    end
+  elseif offset > 0 then
+    for i = old_len, at, -1 do
+      t[i + offset] = t[i]
+    end
+  end
+  for i, item in ipairs(insert) do
+    t[at + i - 1] = item
+  end
+end
+
+
+
 local function compare_score(a, b)
   return a.score > b.score
 end

data/core/config.lua

@@ -6,6 +6,7 @@ config.max_log_items = 80
 config.message_timeout = 5
 config.mouse_wheel_scroll = 50 * SCALE
 config.file_size_limit = 10
+config.scroll_past_end = true
 config.ignore_files = "^%."
 config.symbol_pattern = "[%a_][%w_]*"
 config.non_word_chars = " \t\n/\\()\"':,.;<>~!@#$%^&*|+=[]{}`?-"

data/core/doc/init.lua

@@ -16,26 +16,6 @@ local function split_lines(text)
   return res
 end
 
-
-local function splice(t, at, remove, insert)
-  insert = insert or {}
-  local offset = #insert - remove
-  local old_len = #t
-  if offset < 0 then
-    for i = at - offset, old_len - offset do
-      t[i + offset] = t[i]
-    end
-  elseif offset > 0 then
-    for i = old_len, at, -1 do
-      t[i + offset] = t[i]
-    end
-  end
-  for i, item in ipairs(insert) do
-    t[at + i - 1] = item
-  end
-end
-
-
 function Doc:new(filename)
   self:reset()
   if filename then
@@ -46,7 +26,8 @@ end
 
 function Doc:reset()
   self.lines = { "\n" }
-  self.selection = { a = { line=1, col=1 }, b = { line=1, col=1 } }
+  self.selections = { 1, 1, 1, 1 }
+  self.cursor_clipboard = {}
   self.undo_stack = { idx = 1 }
   self.redo_stack = { idx = 1 }
   self.clean_change_id = 1
@@ -126,45 +107,87 @@ function Doc:get_change_id()
   return self.undo_stack.idx
 end
 
+-- Cursor section. Cursor indices are *only* valid during a get_selections() call.
+-- Cursors will always be iterated in order from top to bottom. Through normal operation
+-- curors can never swap positions; only merge or split, or change their position in cursor
+-- order.
+function Doc:get_selection(sort)
+  local idx, line1, col1, line2, col2 = self:get_selections(sort)({ self.selections, sort }, 0)
+  return line1, col1, line2, col2, sort
+end
 
-function Doc:set_selection(line1, col1, line2, col2, swap)
-  assert(not line2 == not col2, "expected 2 or 4 arguments")
+function Doc:has_selection()
+  local line1, col1, line2, col2 = self:get_selection(false)
+  return line1 ~= line2 or col1 ~= col2
+end
+
+function Doc:sanitize_selection()
+  for idx, line1, col1, line2, col2 in self:get_selections() do
+    self:set_selections(idx, line1, col1, line2, col2)
+  end
+end
+
+local function sort_positions(line1, col1, line2, col2)
+  if line1 > line2 or line1 == line2 and col1 > col2 then
+    return line2, col2, line1, col1
+  end
+  return line1, col1, line2, col2
+end
+
+function Doc:set_selections(idx, line1, col1, line2, col2, swap, rm)
+  assert(not line2 == not col2, "expected 3 or 5 arguments")
   if swap then line1, col1, line2, col2 = line2, col2, line1, col1 end
   line1, col1 = self:sanitize_position(line1, col1)
   line2, col2 = self:sanitize_position(line2 or line1, col2 or col1)
-  self.selection.a.line, self.selection.a.col = line1, col1
-  self.selection.b.line, self.selection.b.col = line2, col2
+  common.splice(self.selections, (idx - 1)*4 + 1, rm == nil and 4 or rm, { line1, col1, line2, col2 })
 end
 
-
-local function sort_positions(line1, col1, line2, col2)
-  if line1 > line2
-  or line1 == line2 and col1 > col2 then
-    return line2, col2, line1, col1, true
+function Doc:add_selection(line1, col1, line2, col2, swap)
+  local l1, c1 = sort_positions(line1, col1, line2 or line1, col2 or col1)
+  local target = #self.selections / 4 + 1
+  for idx, tl1, tc1 in self:get_selections(true) do
+    if l1 < tl1 or l1 == tl1 and c1 < tc1 then
+      target = idx
+      break
     end
-  return line1, col1, line2, col2, false
-end
-
-
-function Doc:get_selection(sort)
-  local a, b = self.selection.a, self.selection.b
-  if sort then
-    return sort_positions(a.line, a.col, b.line, b.col)
   end
-  return a.line, a.col, b.line, b.col
+  self:set_selections(target, line1, col1, line2, col2, swap, 0)
 end
 
-
-function Doc:has_selection()
-  local a, b = self.selection.a, self.selection.b
-  return not (a.line == b.line and a.col == b.col)
+function Doc:set_selection(line1, col1, line2, col2, swap)
+  self.selections, self.cursor_clipboard = {}, {}
+  self:set_selections(1, line1, col1, line2, col2, swap)
 end
 
-
-function Doc:sanitize_selection()
-  self:set_selection(self:get_selection())
+function Doc:merge_cursors(idx)
+  for i = (idx or (#self.selections - 3)), (idx or 5), -4 do
+    for j = 1, i - 4, 4 do
+      if self.selections[i] == self.selections[j] and
+        self.selections[i+1] == self.selections[j+1] then
+          common.splice(self.selections, i, 4)
+          break
+      end
+    end
+  end
 end
 
+local function selection_iterator(invariant, idx)
+  local target = invariant[3] and (idx*4 - 7) or (idx*4 + 1)
+  if target > #invariant[1] or target <= 0 or (type(invariant[3]) == "number" and invariant[3] ~= idx - 1) then return end
+  if invariant[2] then
+    return idx+(invariant[3] and -1 or 1), sort_positions(unpack(invariant[1], target, target+4))
+  else
+    return idx+(invariant[3] and -1 or 1), unpack(invariant[1], target, target+4)
+  end
+end
+
+-- If idx_reverse is true, it'll reverse iterate. If nil, or false, regular iterate. 
+-- If a number, runs for exactly that iteration.
+function Doc:get_selections(sort_intra, idx_reverse)
+  return selection_iterator, { self.selections, sort_intra, idx_reverse }, 
+    idx_reverse == true and ((#self.selections / 4) + 1) or ((idx_reverse or -1)+1)
+end
+-- End of cursor seciton.
 
 function Doc:sanitize_position(line, col)
   line = common.clamp(line, 1, #self.lines)
@@ -251,14 +274,11 @@ local function pop_undo(self, undo_stack, redo_stack, modified)
   if cmd.type == "insert" then
     local line, col, text = table.unpack(cmd)
     self:raw_insert(line, col, text, redo_stack, cmd.time)
-
   elseif cmd.type == "remove" then
     local line1, col1, line2, col2 = table.unpack(cmd)
     self:raw_remove(line1, col1, line2, col2, redo_stack, cmd.time)
-
   elseif cmd.type == "selection" then
-    self.selection.a.line, self.selection.a.col = cmd[1], cmd[2]
-    self.selection.b.line, self.selection.b.col = cmd[3], cmd[4]
+    self.selections = { unpack(cmd) }
   end
 
   modified = modified or (cmd.type ~= "selection")
@@ -288,11 +308,11 @@ function Doc:raw_insert(line, col, text, undo_stack, time)
   lines[#lines] = lines[#lines] .. after
 
   -- splice lines into line array
-  splice(self.lines, line, 1, lines)
+  common.splice(self.lines, line, 1, lines)
 
   -- push undo
   local line2, col2 = self:position_offset(line, col, #text)
-  push_undo(undo_stack, time, "selection", self:get_selection())
+  push_undo(undo_stack, time, "selection", unpack(self.selections))
   push_undo(undo_stack, time, "remove", line, col, line2, col2)
 
   -- update highlighter and assure selection is in bounds
@@ -304,7 +324,7 @@ end
 function Doc:raw_remove(line1, col1, line2, col2, undo_stack, time)
   -- push undo
   local text = self:get_text(line1, col1, line2, col2)
-  push_undo(undo_stack, time, "selection", self:get_selection())
+  push_undo(undo_stack, time, "selection", unpack(self.selections))
   push_undo(undo_stack, time, "insert", line1, col1, text)
 
   -- get line content before/after removed text
@@ -312,7 +332,7 @@ function Doc:raw_remove(line1, col1, line2, col2, undo_stack, time)
   local after = self.lines[line2]:sub(col2)
 
   -- splice line into line array
-  splice(self.lines, line1, line2 - line1 + 1, { before .. after })
+  common.splice(self.lines, line1, line2 - line1 + 1, { before .. after })
 
   -- update highlighter and assure selection is in bounds
   self.highlighter:invalidate(line1)
@@ -348,22 +368,20 @@ function Doc:redo()
 end
 
 
-function Doc:text_input(text)
-  if self:has_selection() then
-    self:delete_to()
+function Doc:text_input(text, idx)
+  for sidx, line1, col1, line2, col2 in self:get_selections(true, idx) do
+    if line1 ~= line2 or col1 ~= col2 then
+      self:delete_to_cursor(sidx)
+    end
+    self:insert(line1, col1, text)
+    self:move_to_cursor(sidx, #text)
   end
-  local line, col = self:get_selection()
-  self:insert(line, col, text)
-  self:move_to(#text)
 end
 
 
 function Doc:replace(fn)
-  local line1, col1, line2, col2, swap
-  local had_selection = self:has_selection()
-  if had_selection then
-    line1, col1, line2, col2, swap = self:get_selection(true)
-  else
+  local line1, col1, line2, col2 = self:get_selection(true)
+  if line1 == line2 and col1 == col2 then
     line1, col1, line2, col2 = 1, 1, #self.lines, #self.lines[#self.lines]
   end
   local old_text = self:get_text(line1, col1, line2, col2)
@@ -371,38 +389,104 @@ function Doc:replace(fn)
   if old_text ~= new_text then
     self:insert(line2, col2, new_text)
     self:remove(line1, col1, line2, col2)
-    if had_selection then
+    if line1 == line2 and col1 == col2 then
       line2, col2 = self:position_offset(line1, col1, #new_text)
-      self:set_selection(line1, col1, line2, col2, swap)
+      self:set_selection(line1, col1, line2, col2)
     end
   end
   return n
 end
 
 
-function Doc:delete_to(...)
-  local line, col = self:get_selection(true)
-  if self:has_selection() then
-    self:remove(self:get_selection())
+function Doc:delete_to_cursor(idx, ...)
+  for sidx, line1, col1, line2, col2 in self:get_selections(true, idx) do
+    if line1 ~= line2 or col1 ~= col2 then
+      self:remove(line1, col1, line2, col2)
     else
-    local line2, col2 = self:position_offset(line, col, ...)
-    self:remove(line, col, line2, col2)
-    line, col = sort_positions(line, col, line2, col2)
+      local l2, c2 = self:position_offset(line1, col1, ...)
+      self:remove(line1, col1, l2, c2)
+      line1, col1 = sort_positions(line1, col1, l2, c2)
     end
-  self:set_selection(line, col)
+    self:set_selections(sidx, line1, col1)
+  end
+  self:merge_cursors(idx)
 end
+function Doc:delete_to(...) return self:delete_to_cursor(nil, ...) end
 
-
-function Doc:move_to(...)
-  local line, col = self:get_selection()
-  self:set_selection(self:position_offset(line, col, ...))
+function Doc:move_to_cursor(idx, ...)
+  for sidx, line, col in self:get_selections(false, idx) do
+    self:set_selections(sidx, self:position_offset(line, col, ...))
+  end
+  self:merge_cursors(idx)
 end
+function Doc:move_to(...) return self:move_to_cursor(nil, ...) end
 
 
-function Doc:select_to(...)
-  local line, col, line2, col2 = self:get_selection()
+function Doc:select_to_cursor(idx, ...)
+  for sidx, line, col, line2, col2 in self:get_selections(false, idx) do
     line, col = self:position_offset(line, col, ...)
-  self:set_selection(line, col, line2, col2)
+    self:set_selections(sidx, line, col, line2, col2)
+  end
+  self:merge_cursors(idx)
+end
+function Doc:select_to(...) return self:select_to_cursor(nil, ...) end
+
+
+local function get_indent_string()
+  if config.tab_type == "hard" then
+    return "\t"
+  end
+  return string.rep(" ", config.indent_size)
+end
+
+-- returns the size of the original indent, and the indent
+-- in your config format, rounded either up or down
+local function get_line_indent(line, rnd_up)
+  local _, e = line:find("^[ \t]+")
+  local soft_tab = string.rep(" ", config.indent_size)
+  if config.tab_type == "hard" then
+    local indent = e and line:sub(1, e):gsub(soft_tab, "\t") or ""
+    return e, indent:gsub(" +", rnd_up and "\t" or "")
+  else
+    local indent = e and line:sub(1, e):gsub("\t", soft_tab) or ""
+    local number = #indent / #soft_tab
+    return e, indent:sub(1,
+      (rnd_up and math.ceil(number) or math.floor(number))*#soft_tab)
+  end
+end
+
+-- un/indents text; behaviour varies based on selection and un/indent.
+-- * if there's a selection, it will stay static around the
+--   text for both indenting and unindenting.
+-- * if you are in the beginning whitespace of a line, and are indenting, the
+--   cursor will insert the exactly appropriate amount of spaces, and jump the
+--   cursor to the beginning of first non whitespace characters
+-- * if you are not in the beginning whitespace of a line, and you indent, it
+--   inserts the appropriate whitespace, as if you typed them normally.
+-- * if you are unindenting, the cursor will jump to the start of the line,
+--   and remove the appropriate amount of spaces (or a tab).
+function Doc:indent_text(unindent, line1, col1, line2, col2)
+  local text = get_indent_string()
+  local _, se = self.lines[line1]:find("^[ \t]+")
+  local in_beginning_whitespace = col1 == 1 or (se and col1 <= se + 1)
+  local has_selection = line1 ~= line2 or col1 ~= col2
+  if unindent or has_selection or in_beginning_whitespace then
+    local l1d, l2d = #self.lines[line1], #self.lines[line2]
+    for line = line1, line2 do
+      local e, rnded = get_line_indent(self.lines[line], unindent)
+      self:remove(line, 1, line, (e or 0) + 1)
+      self:insert(line, 1,
+        unindent and rnded:sub(1, #rnded - #text) or rnded .. text)
+    end
+    l1d, l2d = #self.lines[line1] - l1d, #self.lines[line2] - l2d
+    if (unindent or in_beginning_whitespace) and not has_selection then
+      local start_cursor = (se and se + 1 or 1) + l1d or #(self.lines[line1])
+      return line1, start_cursor, line2, start_cursor
+    end
+    return line1, col1 + l1d, line2, col2 + l2d
+  end
+  self:insert(line1, col1, text)
+  return line1, col1 + #text, line1, col1 + #text
 end
 
 -- For plugins to add custom actions of document change

data/core/docview.lua

@@ -97,6 +97,9 @@ end
 
 
 function DocView:get_scrollable_size()  
+  if not config.scroll_past_end then
+    return self:get_line_height() * (#self.doc.lines) + style.padding.y * 2
+  end
   return self:get_line_height() * (#self.doc.lines - 1) + self.size.y
 end
 
@@ -256,7 +259,11 @@ function DocView:on_mouse_pressed(button, x, y, clicks)
     end
   else
     local line, col = self:resolve_screen_position(x, y)
+    if keymap.modkeys["ctrl"] then
+      self.doc:add_selection(mouse_selection(self.doc, clicks, line, col, line, col))
+    else
       self.doc:set_selection(mouse_selection(self.doc, clicks, line, col, line, col))
+    end
     self.mouse_selecting = { line, col, clicks = clicks }
   end
   core.blink_reset()
@@ -276,8 +283,16 @@ function DocView:on_mouse_moved(x, y, ...)
     local l1, c1 = self:resolve_screen_position(x, y)
     local l2, c2 = table.unpack(self.mouse_selecting)
     local clicks = self.mouse_selecting.clicks
+    if keymap.modkeys["ctrl"] then
+      if l1 > l2 then l1, l2 = l2, l1 end
+      self.doc.selections = { }
+      for i = l1, l2 do
+        self.doc:set_selections(i - l1 + 1, i, math.min(c1, #self.doc.lines[i]), i, math.min(c2, #self.doc.lines[i]))
+      end
+    else
       self.doc:set_selection(mouse_selection(self.doc, clicks, l1, c1, l2, c2))
     end
+  end
 end
 
 
@@ -340,10 +355,8 @@ end
 
 
 function DocView:draw_line_body(idx, x, y)
-  local line, col = self.doc:get_selection()
-
   -- draw selection if it overlaps this line
-  local line1, col1, line2, col2 = self.doc:get_selection(true)
+  for lidx, line1, col1, line2, col2 in self.doc:get_selections(true) do 
     if idx >= line1 and idx <= line2 then
       local text = self.doc.lines[idx]
       if line1 ~= idx then col1 = 1 end
@@ -353,18 +366,21 @@ function DocView:draw_line_body(idx, x, y)
       local lh = self:get_line_height()
       renderer.draw_rect(x1, y, x2 - x1, lh, style.selection)
     end
-
+  end
+  for lidx, line1, col1, line2, col2 in self.doc:get_selections(true) do 
     -- draw line highlight if caret is on this line
-  if config.highlight_current_line and not self.doc:has_selection()
-  and line == idx and core.active_view == self then
+    if config.highlight_current_line and (line1 == line2 and col1 == col2)
+    and line1 == idx and core.active_view == self then
       self:draw_line_highlight(x + self.scroll.x, y)
     end
+  end
   
   -- draw line's text
   self:draw_line_text(idx, x, y)
 
   -- draw caret if it overlaps this line
   local T = config.blink_period
+  for _, line, col in self.doc:get_selections() do 
     if line == idx and core.active_view == self
     and (core.blink_timer - core.blink_start) % T < T / 2
     and system.window_has_focus() then
@@ -372,14 +388,17 @@ function DocView:draw_line_body(idx, x, y)
       local x1 = x + self:get_col_x_offset(line, col)
       renderer.draw_rect(x1, y, style.caret_width, lh, style.caret)
     end
+  end
 end
 
 
 function DocView:draw_line_gutter(idx, x, y)
   local color = style.line_number
-  local line1, _, line2, _ = self.doc:get_selection(true)
+  for _, line1, _, line2 in self.doc:get_selections(true) do 
     if idx >= line1 and idx <= line2 then
       color = style.line_number2
+      break
+    end
   end
   local yoffset = self:get_line_text_y_offset()
   x = x + style.padding.x

data/core/init.lua

@@ -59,9 +59,9 @@ end
 
 
 function core.reschedule_project_scan()
-  if core.project_scan_thread_id then
-    core.threads[core.project_scan_thread_id].wake = 0
-  end
+  -- if core.project_scan_thread_id then
+  --   core.threads[core.project_scan_thread_id].wake = 0
+  -- end
 end
 
 
@@ -512,6 +512,7 @@ function core.init()
   core.redraw = true
   core.visited_files = {}
   core.restart_request = false
+  core.quite_request = false
   core.replacements = whitespace_replacements()
 
   core.root_view = RootView()
@@ -535,7 +536,7 @@ function core.init()
   local plugins_success, plugins_refuse_list = core.load_plugins()
 
   do
-    local pdir, pname = project_dir_abs:match("(.*)[/\\\\](.*)")
+    local pdir, pname = project_dir_abs:match("(.*)[:/\\\\](.*)")
     core.log("Opening project %q from directory %s", pname, pdir)
   end
   local got_project_error = not core.load_project_module()
@@ -668,7 +669,8 @@ local function quit_with_function(quit_fn, force)
 end
 
 function core.quit(force)
-  quit_with_function(os.exit, force)
+  -- quit_with_function(os.exit, force)
+  quit_with_function(function() core.quit_request = true end, force)
 end
 
 
@@ -1044,7 +1046,7 @@ function core.run()
     core.frame_start = system.get_time()
     local did_redraw = core.step()
     local need_more_work = run_threads()
-    if core.restart_request then break end
+    if core.restart_request or core.quit_request then break end
     if not did_redraw and not need_more_work then
       idle_iterations = idle_iterations + 1
       -- do not wait of events at idle_iterations = 1 to give a chance at core.step to run

data/core/keymap-macos.lua

@@ -101,6 +101,8 @@ local function keymap_macos(keymap)
     ["cmd+shift+end"] = "doc:select-to-end-of-doc",
     ["shift+pageup"] = "doc:select-to-previous-page",
     ["shift+pagedown"] = "doc:select-to-next-page",
+    ["cmd+shift+up"] = "doc:create-cursor-previous-line",
+    ["cmd+shift+down"] = "doc:create-cursor-next-line"
   }
 end
 

data/core/keymap.lua

@@ -6,9 +6,12 @@ keymap.map = {}
 keymap.reverse_map = {}
 
 local macos = rawget(_G, "MACOS_RESOURCES")
-
+local os4 = false
+if PLATFORM == "AmigaOS 4" then
+  os4 = true 
+end
 -- Thanks to mathewmariani, taken from his lite-macos github repository.
-local modkeys_os = require("core.modkeys-" .. (macos and "macos" or "generic"))
+local modkeys_os = require("core.modkeys-" .. (macos and "macos" or os4 and "os4" or "generic"))
 local modkey_map = modkeys_os.map
 local modkeys = modkeys_os.keys
 
@@ -202,6 +205,8 @@ keymap.add_direct {
   ["ctrl+shift+end"] = "doc:select-to-end-of-doc",
   ["shift+pageup"] = "doc:select-to-previous-page",
   ["shift+pagedown"] = "doc:select-to-next-page",
+  ["ctrl+shift+up"] = "doc:create-cursor-previous-line",
+  ["ctrl+shift+down"] = "doc:create-cursor-next-line"
 }
 
 return keymap

data/core/modkeys-os4.lua

@@ -0,0 +1,15 @@
+local modkeys = {}
+
+modkeys.map = {
+  ["left amiga"]     = "cmd",
+  ["right amiga"]    = "cmd",
+  ["control"]        = "ctrl",
+  ["left shift"]     = "shift",
+  ["right shift"]    = "shift",
+  ["left alt"]       = "alt",
+  ["right alt"]      = "altgr",
+}
+
+modkeys.keys = { "cmd", "ctrl", "alt", "altgr", "shift" }
+
+return modkeys

lib/font_renderer/os4build.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+cxxcompiler="g++"
+cxxflags="-Wall -O3 -g -std=c++03 -fno-exceptions -fno-rtti -Isrc -Ilib/font_renderer -DFONT_RENDERER_HEIGHT_HACK -lagg -lfreetype -I/sdk/local/common/include/agg"
+
+echo "compiling font renderer library..."
+
+g++ -c $cxxflags agg_font_freetype.cpp -o agg_font_freetype.o
+g++ -c $cxxflags font_renderer.cpp -o font_renderer.o
+
+ar -rcs libfontrenderer.a *.o
+
+rm *.o
+echo "font renderer library created"

os4build.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+cflags="-D__USE_INLINE__ -DLITE_XL_DATA_USE_EXEDIR -DLITE_USE_SDL_RENDERER -Wall -O3 -std=gnu11 -fno-strict-aliasing -Isrc -Ilib/font_renderer -I/sdk/local/newlib/include/SDL2 -lSDL2 -llua -lauto"
+#cflags+=" $(pkg-config --cflags lua5.2) $(sdl2-config --cflags)"
+lflags="-mcrt=newlib -static-libgcc -static-libstdc++ -lSDL2 -lagg -lfreetype -llua -lm -lpthread -athread=native"
+#for package in libagg freetype2 lua5.2; do
+#  lflags+=" $(pkg-config --libs $package)"
+#done
+#lflags+=" $(sdl2-config --libs) -lm"
+
+#if [[ $* == *windows* ]]; then
+#  echo "cross compiling for windows is not yet supported"
+#  exit 1
+#else
+  outfile="lite"
+  compiler="gcc"
+  cxxcompiler="g++"
+#fi
+
+#lib/font_renderer/build.sh || exit 1
+#libs=libfontrenderer.a
+libs="-lfontrenderer"
+
+echo "compiling lite..."
+
+gcc -c $cflags src/fontdesc.c -o fontdesc.o
+gcc -c $cflags src/main.c -o main.o
+gcc -c $cflags src/rencache.c -o rencache.o
+gcc -c $cflags src/renderer.c -o renderer.o
+gcc -c $cflags src/renwindow.c -o renwindow.o
+
+gcc -c $cflags src/api/api.c -o api.o
+gcc -c $cflags src/api/cp_replace.c -o cp_replace.o
+gcc -c $cflags src/api/renderer.c -o apirenderer.o
+gcc -c $cflags src/api/renderer_font.c -o renderer_font.o
+gcc -c $cflags src/api/system.c -o system.o
+
+gcc -c $cflags src/platform/amigaos4.c -o amigaos4.o
+
+echo "linking..."
+g++ -o $outfile *.o $libs $lflags
+
+echo "cleaning up..."
+rm *.o
+echo "done"
+

src/api/system.c

@@ -12,6 +12,10 @@
   #include <windows.h>
 #endif
 
+#ifdef __amigaos4__
+  #include "platform/amigaos4.h"
+#endif
+
 extern SDL_Window *window;
 
 
@@ -287,7 +291,11 @@ static int f_set_window_mode(lua_State *L) {
   int n = luaL_checkoption(L, 1, "normal", window_opts);
   SDL_SetWindowFullscreen(window,
     n == WIN_FULLSCREEN ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
-  if (n == WIN_NORMAL) { SDL_RestoreWindow(window); }
+  if (n == WIN_NORMAL) 
+  { 
+    ren_resize_window();
+    SDL_RestoreWindow(window); 
+  }
   if (n == WIN_MAXIMIZED) { SDL_MaximizeWindow(window); }
   if (n == WIN_MINIMIZED) { SDL_MinimizeWindow(window); }
   return 0;
@@ -423,6 +431,10 @@ static int f_list_dir(lua_State *L) {
   #define realpath(x, y) _fullpath(y, x, MAX_PATH)
 #endif
 
+#ifdef __amigaos4__
+  #define realpath(x, y) _fullpath(x)
+#endif
+
 static int f_absolute_path(lua_State *L) {
   const char *path = luaL_checkstring(L, 1);
   char *res = realpath(path, NULL);

src/main.c

@@ -13,6 +13,8 @@
   #include <X11/Xlib.h>
   #include <X11/Xatom.h>
   #include <X11/Xresource.h>
+#elif __amigaos4__
+  #include "platform/amigaos4.h"
 #elif __APPLE__
   #include <mach-o/dyld.h>
 #endif
@@ -70,12 +72,13 @@ static void get_exe_filename(char *buf, int sz) {
   char exepath[size];
   _NSGetExecutablePath(exepath, &size);
   realpath(exepath, buf);
+#elif __amigaos4__
+  strcpy(buf, _fullpath("./lite"));
 #else
   strcpy(buf, "./lite");
 #endif
 }
 
-
 static void init_window_icon(void) {
 #ifndef _WIN32
   #include "../icon.inl"
@@ -132,6 +135,8 @@ int main(int argc, char **argv) {
   window = SDL_CreateWindow(
     "", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, dm.w * 0.8, dm.h * 0.8,
     SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI | SDL_WINDOW_HIDDEN);
+  SDL_SetWindowDisplayMode(window, &dm);
+  
   init_window_icon();
   ren_init(window);
 
@@ -154,7 +159,6 @@ init_lua:
 
   lua_pushnumber(L, get_scale());
   lua_setglobal(L, "SCALE");
-
   char exename[2048];
   get_exe_filename(exename, sizeof(exename));
   lua_pushstring(L, exename);
@@ -164,13 +168,15 @@ init_lua:
   set_macos_bundle_resources(L);
   enable_momentum_scroll();
 #endif
-
   const char *init_lite_code = \
     "local core\n"
     "xpcall(function()\n"
     "  HOME = os.getenv('" LITE_OS_HOME "')\n"
     "  local exedir = EXEFILE:match(\"^(.*)" LITE_PATHSEP_PATTERN LITE_NONPATHSEP_PATTERN "$\")\n"
     "  local prefix = exedir:match(\"^(.*)" LITE_PATHSEP_PATTERN "bin$\")\n"
+    "  if not HOME then\n"
+    "    HOME = exedir\n"
+    "  end\n"
     "  dofile((MACOS_RESOURCES or (prefix and prefix .. '/share/lite-xl' or exedir .. '/data')) .. '/core/start.lua')\n"
     "  core = require('core')\n"
     "  core.init()\n"
@@ -203,11 +209,12 @@ init_lua:
   lua_pcall(L, 0, 1, 0);
   if (lua_toboolean(L, -1)) {
     lua_close(L);
+    rencache_invalidate();
     goto init_lua;
   }
-
   lua_close(L);
   ren_free_window_resources();
+  SDL_Quit();
 
   return EXIT_SUCCESS;
 }

src/platform/amigaos4.c

@@ -0,0 +1,61 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "amigaos4.h"
+
+static char *getFullPath(const char *path)
+{
+  char *appPath = malloc(sizeof(char) * MAX_DOS_NAME);
+  BPTR pathLock = Lock(path, SHARED_LOCK);
+  if (pathLock)
+  {
+	  NameFromLock(pathLock, appPath, sizeof(char) * MAX_DOS_NAME);
+    UnLock(pathLock);
+
+	  return appPath;
+  }
+  return NULL;
+}
+
+static char *getCurrentPath(void)
+{
+  char *appPath = malloc(sizeof(char) * MAX_DOS_NAME);
+  BPTR pathLock = GetCurrentDir();
+  if (pathLock)
+  {
+	  NameFromLock(pathLock, appPath, sizeof(char) * MAX_DOS_NAME);
+	  return appPath;
+  }
+  return NULL;
+}
+
+char *_fullpath(const char *path)
+{
+  static char prvPath[MAX_DOS_NAME];
+  static char result[MAX_DOS_NAME];
+
+  if (!strcmp(path, prvPath))
+  {
+    return result;
+  }
+
+  strcpy(prvPath, path);
+
+  if (!strcmp(path, "./lite"))
+  {
+    // TODO: Add code to get the name of the executable
+    strcpy(result, getFullPath("PROGDIR:lite"));
+    return result;
+  }
+
+  if (!strcmp(path, "."))
+  {
+    strcpy(result, getCurrentPath());
+    return result;
+  }
+
+  strcpy(result, getFullPath(path));
+  return result;
+}

src/platform/amigaos4.h

@@ -0,0 +1,16 @@
+#ifndef _AMIGAOS4_H
+#define _AMIGAOS4_H
+
+#include <proto/dos.h>
+#include <proto/exec.h>
+
+#define VSTRING     "Lite XL 1.16.12.6 (04.01.2022)"
+#define VERSTAG     "\0$VER: " VSTRING
+
+static CONST_STRPTR stack USED = "$STACK:102400";
+static CONST_STRPTR version USED = VERSTAG;
+
+char *_fullpath(const char *);
+
+
+#endif

src/renwindow.c

@@ -9,6 +9,15 @@ static int query_surface_scale(RenWindow *ren) {
   SDL_GetWindowSize(ren->window, &w_points, &h_points);
   /* We consider that the ratio pixel/point will always be an integer and
      it is the same along the x and the y axis. */
+  
+  // This is a workaround when the w_pixels != w_points and h_pixels != h_points
+  // because of redraw delays, especially when the "Resize with contents" is enabled
+  if (w_pixels != w_points) {
+    w_pixels = w_points;
+  }
+  if (h_pixels != h_points) {
+    h_pixels = h_points;
+  }
   assert(w_pixels % w_points == 0 && h_pixels % h_points == 0 && w_pixels / w_points == h_pixels / h_points);
   return w_pixels / w_points;
 }
@@ -20,7 +29,7 @@ static void setup_renderer(RenWindow *ren, int w, int h) {
     SDL_DestroyTexture(ren->texture);
     SDL_DestroyRenderer(ren->renderer);
   }
-  ren->renderer = SDL_CreateRenderer(ren->window, -1, 0);
+  ren->renderer = SDL_CreateRenderer(ren->window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
   ren->texture = SDL_CreateTexture(ren->renderer, SDL_PIXELFORMAT_BGRA32, SDL_TEXTUREACCESS_STREAMING, w, h);
   ren->surface_scale = query_surface_scale(ren);
 }