Comment 43 for bug 1768166

I tried your ibus-pinyin ppa; the problem still persists. I will explain
that in better detail later. Basically, after 18.04 (no problem there),
ibus-pinyin fails to update the hierarchy of an "entered" word or phase in
the "candidate list". This is one of the most important features of a
Chinese input tool. Without it, thhis tool is unusable.

The Chinese Ubuntu forum member who helped testing ibus-libpinyin 1.11
(百草谷居--btw, he is also a CPA）mentioned two important features that are
lacking in ibus-libpinyin which actually also prevented him from using this
input tool (except for doing this test). Both features are available (&
kicking) in ibus-pinyin.

However, my most critical concern is always about stability. I have used
the same old ibus-pinyin Chinese input tool since 18.04 daily built first
became available and have not had any problem. As I mentioned in previous
communications, for some unknown reason ibus-pinyin doesn't work well in
Fedora/RedHat (though it can be installed without any problem), in reasons
probably similar to why ibus-pinyin is not working well in 19.04/19.10.
This is the main reason that I am not too thrilled about Fedora.

On Wed, Jun 19, 2019 at 12:42 AM Gunnar Hjalmarsson <
<email address hidden>> wrote:

> Thanks Ping-Wu!
>
> Our attempts to recruit additional Chinese testers failed unfortunately.
> My view is that we still are ready to consider the proposed packages
> verified. I base my view on:
>
> * The bug reporter's test results according to comment #35
>
> * My own verification measures according to comment #23
>
> * The reporter of bug #1829947 expressed a positive testimony as to
> the ibus-libpinyin version we are backporting here (comment #20 in
> that report).
>
> * The proposed packages have 'matured' in -proposed for soon three
> weeks.
>
> ** Tags removed: verification-needed verification-needed-bionic
> verification-needed-cosmic
> ** Tags added: verification-done verification-done-bionic
> verification-done-cosmic
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1768166
>
> Title:
> Random crashes
>
> Status in ibus-libpinyin package in Ubuntu:
> Fix Released
> Status in libpinyin package in Ubuntu:
> Fix Released
> Status in ibus-libpinyin source package in Bionic:
> Fix Committed
> Status in libpinyin source package in Bionic:
> Fix Committed
> Status in ibus-libpinyin source package in Cosmic:
> Fix Committed
> Status in libpinyin source package in Cosmic:
> Fix Committed
>
> Bug description:
> [Impact]
>
> ibus-libpinyin has proved to crash far too often. One or more files in
> ~/.cache/ibus/libpinyin get corrupted somehow, and emptying that
> directory allows the user to keep using ibus-libpinyin.
>
> In disco (and eoan) ibus-libpinyin 1.11.0 and libpinyin 2.2.2 are
> present, and the number of crashes has been reduced significantly:
>
> https://errors.ubuntu.com/?package=ibus-libpinyin&period=month
>
> Upstream ChangeLog ibus-libpinyin:
> ----------------------------------
> version 1.11.0
> * fixes keypad decimal
> * fixes emoji candidates
> * support configurable opencc config
>
> version 1.10.92
> * fixes Enter handling
>
> version 1.10.91
> * support ime.register_trigger in lua extension
> * support predicted candidates
> * support emoji input
>
> version 1.10.0
> * bug fixes
>
> version 1.9.91
> * migrate to use GSettings
> * fixes lyx short cut issue
>
> version 1.9.3
> * translate input method name in ibus menu
>
> Upstream ChangeLog libpinyin:
> -----------------------------
> version 2.2.2
> * minor fixes
>
> version 2.2.1
> * fixes predicted candidates
>
> version 2.2.0
> * bug fixes
>
> The proposal is to backport the disco versions of those packages to
> bionic and cosmic in an attempt to prevent crashes. Proposed uploads
> are available in this PPA:
>
> https://launchpad.net/~gunnarhj/+archive/ubuntu/ibus-libpinyin
>
> [Test Case]
>
> * Install from {bionic,cosmic}-proposed:
> - libpinyin13
> - libpinyin-data
> - ibus-libpinyin
>
> * Use "Intelligent Pinyin" for typing and confirm that no new issues
> show up when doing so.
>
> (This is apparently not a confirmation that the upload really fixes
> the bug. To compensate for that, we will await testing of the
> -proposed packages by a few Chinese users before considering the
> uploads verified.)
>
> Reverse dependencies
> --------------------
> Besides ibus-libpinyin, also fcitx-libpinyin and ibus-libzhuyin depend
> on packages belonging to the libpinyin source package. So additional test
> measures are:
>
> * Install fcitx-libpinyin and ibus-libzhuyin.
>
> * Use both those tools for typing Chinese, and confirm that you don't
> observe any adverse effects of the libpinyin upgrade.
>
> [Regression Potential]
>
> The changes are mostly bug fixes, so the regression risk should be
> limited. Also consider that the starting point is a rather unstable
> functionality.
>
> NOTE TO SRU TEAM: Please let the SRU age for longer than 7 days to get
> as much testing as possible. There do not seem to be too many risky
> changes carried, but such jumps in upstream versions always carry some
> regression-risk.
>
> [Original description]
>
> I have experienced random ibus-libpinyin crashes in bionic. I cannot
> reproduce it, but it occurred at least a few times, even after the
> official bionic release. Same crashes were also reported in the
> Ubuntu Chinese forum.
>
> Currently, the workaround is to delete the ~/.cache/ibus/libpinyin
> folder.
>
> I talked to Peng Wu, ibus-libpinyin's creator and main maintainer, he
> suggested that we update the version of ibus-libpinyin to 1.10.
>
> Can we give this update a trial?
>
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