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[ruby/reline] Implement the redo command

Browse source 
(https://github.com/ruby/reline/pull/707)

* Implement the redo command

* Commented out a test that does not pass

* Changed key assignment for redo from "\C-[" to "\C-g"

* Changed redo key assignment from `\C-g` to `\M-\C-_`

* Revert the first implemantation

* Implemented redo by sharing `@past_lines` between undo and redo

* Fixed the index of past_lines that is updated when the cursor is moved

* Fixed deletion of the redo history in regular input

* Renamed variables: past_lines -> input_lines

* Rename @position to @input_lines_position

* Deleted unused variables: `@old_byte_pointer` and `@old_line_index`

0b2d9fab5f
This commit is contained in:
verdy89 2024-05-28 01:38:19 +09:00 • committed by git
parent bc47ca5546
commit 7c6e4bc7ca
4 changed files with 153 additions and 20 deletions
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106
test/reline/test_key_actor_emacs.rb
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@ -1498,11 +1498,115 @@ class Reline::KeyActor::Emacs::Test < Reline::TestCase
end
def test_undo_with_many_times
str = "a" + "b" * 100
str = "a" + "b" * 99
input_keys(str, false)
100.times { input_keys("\C-_", false) }
assert_line_around_cursor('a', '')
input_keys("\C-_", false)
assert_line_around_cursor('a', '')
end
def test_redo
input_keys("aあb", false)
assert_line_around_cursor('aあb', '')
input_keys("\M-\C-_", false)
assert_line_around_cursor('aあb', '')
input_keys("\C-_", false)
assert_line_around_cursor('aあ', '')
input_keys("\C-_", false)
assert_line_around_cursor('a', '')
input_keys("\M-\C-_", false)
assert_line_around_cursor('aあ', '')
input_keys("\M-\C-_", false)
assert_line_around_cursor('aあb', '')
input_keys("\C-_", false)
assert_line_around_cursor('aあ', '')
input_keys("c", false)
assert_line_around_cursor('aあc', '')
input_keys("\M-\C-_", false)
assert_line_around_cursor('aあc', '')
end
def test_redo_with_cursor_position
input_keys("abc\C-b\C-h", false)
assert_line_around_cursor('a', 'c')
input_keys("\M-\C-_", false)
assert_line_around_cursor('a', 'c')
input_keys("\C-_", false)
assert_line_around_cursor('ab', 'c')
input_keys("\M-\C-_", false)
assert_line_around_cursor('a', 'c')
end
def test_redo_with_multiline
@line_editor.multiline_on
@line_editor.confirm_multiline_termination_proc = proc {}
input_keys("1\n2\n3", false)
assert_whole_lines(["1", "2", "3"])
assert_line_index(2)
assert_line_around_cursor('3', '')
input_keys("\C-_", false)
assert_whole_lines(["1", "2", ""])
assert_line_index(2)
assert_line_around_cursor('', '')
input_keys("\C-_", false)
assert_whole_lines(["1", "2"])
assert_line_index(1)
assert_line_around_cursor('2', '')
input_keys("\M-\C-_", false)
assert_whole_lines(["1", "2", ""])
assert_line_index(2)
assert_line_around_cursor('', '')
input_keys("\M-\C-_", false)
assert_whole_lines(["1", "2", "3"])
assert_line_index(2)
assert_line_around_cursor('3', '')
input_keys("\C-p\C-h\C-h", false)
assert_whole_lines(["1", "3"])
assert_line_index(0)
assert_line_around_cursor('1', '')
input_keys("\C-n", false)
assert_whole_lines(["1", "3"])
assert_line_index(1)
assert_line_around_cursor('3', '')
input_keys("\C-_", false)
assert_whole_lines(["1", "", "3"])
assert_line_index(1)
assert_line_around_cursor('', '')
input_keys("\C-_", false)
assert_whole_lines(["1", "2", "3"])
assert_line_index(1)
assert_line_around_cursor('2', '')
input_keys("\M-\C-_", false)
assert_whole_lines(["1", "", "3"])
assert_line_index(1)
assert_line_around_cursor('', '')
input_keys("\M-\C-_", false)
assert_whole_lines(["1", "3"])
assert_line_index(1)
assert_line_around_cursor('3', '')
end
def test_redo_with_many_times
str = "a" + "b" * 98 + "c"
input_keys(str, false)
100.times { input_keys("\C-_", false) }
assert_line_around_cursor('a', '')
input_keys("\C-_", false)
assert_line_around_cursor('a', '')
100.times { input_keys("\M-\C-_", false) }
assert_line_around_cursor(str, '')
input_keys("\M-\C-_", false)
assert_line_around_cursor(str, '')
end
end