[ruby/reline] Simplify SIGWINCH handler to avoid aborting when resizing.

481add0537

lib/reline/ansi.rb

@@ -126,8 +126,8 @@ class Reline::ANSI
     unless @@buf.empty?
       return @@buf.shift
     end
-    until c = @@input.raw(intr: true, &:getbyte)
+    until c = @@input.raw(intr: true) { select([@@input], [], [], 0.1) && @@input.getbyte }
-      sleep 0.1
+      Reline.core.line_editor.resize
     end
     (c == 0x16 && @@input.raw(min: 0, tim: 0, &:getbyte)) || c
   rescue Errno::EIO

lib/reline/line_editor.rb

@@ -178,6 +178,14 @@ class Reline::LineEditor
     rescue ArgumentError
     end
     Reline::IOGate.set_winch_handler do
+      @resized = true
+    end
+    @block_elem_width = Reline::Unicode.calculate_width('█')
+  end
+
+  def resize
+    return unless @resized
+    @resized = false
     @rest_height = (Reline::IOGate.get_screen_size.first - 1) - Reline::IOGate.cursor_pos.y
     old_screen_size = @screen_size
     @screen_size = Reline::IOGate.get_screen_size
@@ -214,8 +222,6 @@ class Reline::LineEditor
       @rerender_all = true
     end
   end
-    @block_elem_width = Reline::Unicode.calculate_width('█')
-  end
 
   def finalize
     Signal.trap('INT', @old_trap)
@@ -264,6 +270,7 @@ class Reline::LineEditor
     @auto_indent_proc = nil
     @dialogs = []
     @last_key = nil
+    @resized = false
     reset_line
   end