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Transpose characters if cursor is at the end of the line #559

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Merged
sebastinas merged 1 commit into from
Aug 26, 2015
Merged

Transpose characters if cursor is at the end of the line #559

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4 changes: 3 additions & 1 deletion bpython/curtsiesfrontend/manual_readline.py
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Original file line number Diff line number Diff line change
Expand Up @@ -280,8 +280,10 @@ def yank_prev_killed_text(cursor_offset, line, cut_buffer):

@edit_keys.on(config='transpose_chars_key')
def transpose_character_before_cursor(cursor_offset, line):
if cursor_offset == 0:
if cursor_offset < 2:
return cursor_offset, line
if cursor_offset == len(line):
return cursor_offset, line[:-2] + line[-1] + line[-2]
return (min(len(line), cursor_offset + 1),
line[:cursor_offset - 1] +
(line[cursor_offset] if len(line) > cursor_offset else '') +
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10 changes: 8 additions & 2 deletions bpython/test/test_manual_readline.py
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Original file line number Diff line number Diff line change
Expand Up @@ -207,9 +207,15 @@ def test_transpose_empty_line(self):

def test_transpose_first_character(self):
self.assertEquals(transpose_character_before_cursor(0, 'a'),
transpose_character_before_cursor(0, 'a'))
(0, 'a'))
self.assertEquals(transpose_character_before_cursor(0, 'as'),
transpose_character_before_cursor(0, 'as'))
(0, 'as'))

def test_transpose_end_of_line(self):
self.assertEquals(transpose_character_before_cursor(1, 'a'),
(1, 'a'))
self.assertEquals(transpose_character_before_cursor(2, 'as'),
(2, 'sa'))

def test_transpose_word_before_cursor(self):
pass
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