[Bug 1991620] New: [abrt] ibus-anthy-python: __update_anthy_convert_chars(): engine.py:1278:__update_anthy_convert_chars:TypeError: can only concatenate str (not "NoneType") to str

https://bugzilla.redhat.com/show_bug.cgi?id=1991620

Bug ID: 1991620
           Summary: [abrt] ibus-anthy-python:
                    __update_anthy_convert_chars():
                    engine.py:1278:__update_anthy_convert_chars:TypeError:
                    can only concatenate str (not "NoneType") to str
           Product: Fedora
           Version: 34
          Hardware: x86_64
            Status: NEW
        Whiteboard: abrt_hash:adf1428823b5e645d6a3b67bae82a7aaac3b13c8;VAR
                    IANT_ID=workstation;
         Component: ibus-anthy
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail], [e-mail],
                    [e-mail]
  Target Milestone: ---
    Classification: Fedora

Description of problem:
I was writing using the IME, tried to write う and pressed tab to se the list of
suggestions, then backspace to go back.

Version-Release number of selected component:
ibus-anthy-python-1.5.12-7.fc34

Additional info:
reporter:       libreport-2.15.2
cmdline:        python3 /usr/share/ibus-anthy/engine/main.py --ibus
crash_function: __update_anthy_convert_chars
exception_type: TypeError
executable:     /usr/share/ibus-anthy/engine/main.py
interpreter:    python3-3.9.6-2.fc34.x86_64
kernel:         5.13.7-200.fc34.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
engine.py:1278:__update_anthy_convert_chars:TypeError: can only concatenate str
(not "NoneType") to str

Traceback (most recent call last):
  File "/usr/share/ibus-anthy/engine/engine.py", line 1299, in __update
    self.__update_convert_chars()
  File "/usr/share/ibus-anthy/engine/engine.py", line 1222, in
__update_convert_chars
    self.__update_anthy_convert_chars()
  File "/usr/share/ibus-anthy/engine/engine.py", line 1278, in
__update_anthy_convert_chars
    self.__convert_chars += text
TypeError: can only concatenate str (not "NoneType") to str

Local variables in innermost frame:
self: <engine.Engine object at 0x7fba89694940 (engine+Engine at
0x56112e547170)>
pos: 0
i: 0
seg_index: -1
text: None

[Bug 1991620] [abrt] ibus-anthy-python: __update_anthy_convert_chars(): engine.py:1278:__update_anthy_convert_chars:TypeError: can only concatenate str (not "NoneType") to str

https://bugzilla.redhat.com/show_bug.cgi?id=1991620

fujiwara  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |needinfo?(jacopo1.farina@gm
                   |                            |ail.com)
           Doc Type|---                         |If docs needed, set a value

--- Comment #8 from fujiwara  ---
Your history file might be broken.
Are you able to reproduce your problem after you move
$HOME/.config/anthy/last-record2_default.utf8 to anywhere and run `ibus
restart` command?

[Bug 1991620] [abrt] ibus-anthy-python: __update_anthy_convert_chars(): engine.py:1278:__update_anthy_convert_chars:TypeError: can only concatenate str (not "NoneType") to str

https://bugzilla.redhat.com/show_bug.cgi?id=1991620

Jacopo Farina  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|needinfo?(jacopo1.farina@gm |
                   |ail.com)                    |

--- Comment #9 from Jacopo Farina  ---
(In reply to fujiwara from comment #8)
> Your history file might be broken.
> Are you able to reproduce your problem after you move
> $HOME/.config/anthy/last-record2_default.utf8 to anywhere and run `ibus
> restart` command?

I just checked and indeed if I move the file I cannot reproduce it. Weirdly,
after moving the file back again the bug seems to have disappeared. Probably
can be closed

[Bug 1991620] [abrt] ibus-anthy-python: __update_anthy_convert_chars(): engine.py:1278:__update_anthy_convert_chars:TypeError: can only concatenate str (not "NoneType") to str

https://bugzilla.redhat.com/show_bug.cgi?id=1991620

fujiwara  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WORKSFORME
             Status|NEW                         |CLOSED
        Last Closed|                            |2021-08-18 07:46:19

--- Comment #10 from fujiwara  ---
> after moving the file back again the bug seems to have disappeared

It's curious.
When you will find exact reproducing steps, please comment here later.