CudaText Plugin

from collections import deque

from cudatext import *

class Command:

    def __init__(self):
        self.edited_lines = {} # filename:deque of line indexes
        self.deque_inds = dict() # filename:current index in deque of edited line indexes


    def to_last_edit(self):
      f = ed.get_filename()

      if f in self.edited_lines:
        ind = self.deque_inds.setdefault(f, 0)

        if ind < len(self.edited_lines[f]):
          target_line = self.edited_lines[f][ind]
          ed.set_caret(0, target_line)
          self.deque_inds[f] += 1

    def on_change(self, ed_self):
      line = ed_self.get_carets()[0][1] # y of first caret
      f = ed_self.get_filename()

      if f not in self.edited_lines:
        self.edited_lines[f] = deque([], 30)

      self.deque_inds[f] = 0 # reset
      ## store edited line index  (or move to start of deque)
      if line in self.edited_lines[f]:
        self.edited_lines[f].remove(line)
      self.edited_lines[f].appendleft(line)