echo_translator returns a empty candidate when press {escape} after committing part of input codes

[mirtlecn]

Describe the bug

{Escape} will clear all committed text and reset current state to no composing if input codes exist but user selects nothing.

But, if there are input codes with selected cands, {Escape} will clear the codes and remain current state as composing, in which case, echo_translator will return a null cand.

To Reproduce Steps to reproduce the bug:

1. enable echo_translator
2. send nihao
3. select ni -> 你, then the committed code will be 你hao
4. send {Escape}
5. there is a null cand being highlighted

video:

20240120202731.webm

Expected behavior

Either

{Escape} will always clear all commited texts by default.

or

echo_translator will not echo a null cand

Even if retaining committed candidate is an intended behaviour, it's quite comfusing that echo_translator returning a empty candidate. There is only a lable 1 in the weasel window as the above gif shows.

is accepted.

Flavor(please complete the following information): Select your flavor:

• [x] rime api console
• [ ] ibus-rime
• [ ] fcitx-rime
• [ ] fcitx5-rime
• [ ] Squirrel
• [ ] Trime
• [x] Weasel

Package:

• OS: Ubuntu latest, Windows 11 22H2
• Version: 33ce2459f82e2e99ac6232a11424d883a4119894

[lotem]

Fixed in https://github.com/rime/librime/commit/ec4bdfe4b9937f790417e8a3aec006d4c5d6dd85