Exposed indent function, and made it more flexible.

data/core/commands/doc.lua

@@ -63,41 +63,6 @@ local function get_line_indent(line, rnd_up)
   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).
-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)
-    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
-end
-
 local commands = {
   ["doc:undo"] = function()
     doc():undo()
@@ -206,11 +171,11 @@ local commands = {
   end,
 
   ["doc:indent"] = function()
-    indent_text()
+    doc():indent_text(false, doc_multiline_selection(true))
   end,
 
   ["doc:unindent"] = function()
-    indent_text(true)
+    doc():indent_text(true, doc_multiline_selection(true))
   end,
 
   ["doc:duplicate-lines"] = function()