https://bugs.kde.org/show_bug.cgi?id=491501
Bug ID: 491501
Summary: KRunner shows results when query contains one (1)
letter, or three (3) letters, but not two (2) letters
for most queries
Classification: Plasma
Product: krunner
Version: 6.1.4
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: adam.m.fontenot+...@gmail.com
CC: alexander.loh...@gmx.de, natalie_clar...@yahoo.de
Target Milestone: ---
Created attachment 172455
--> https://bugs.kde.org/attachment.cgi?id=172455&action=edit
screen recording of issue
SUMMARY
As I'm typing a query, results appear on the first letter entered, then
disappear, then reappear. See video.
The effect appears to happen for downstream widgets like Milou as well,
although it's less prominent because the widget doesn't resize when the number
of results changes (I think this is maybe a bug?).
My guess is that there's a weird heuristic driving this effect, something like
- if query contains less than three letters, show results that *begin* with
those letters. If query contains three or more letters, show results that
*contain* those letters. That sounds reasonable enough in principle, but in
practice it can behave in pretty undesirable ways, as seen in the video.
Maybe a reasonable alternative heuristic would include:
* Keeping existing results when new letters are added if those results would
match under the three letter "full" check. This would get rid of the problem
where a result (like System Settings in the video) disappears then reappears.
* If less than n - some magic value - results are returned for one or two
letter searches, fill in the gaps with a lower priority full text search for
certain allowlisted plugins that are not research intensive.
The slightly annoying bug summary is for searchability, sorry about that.
STEPS TO REPRODUCE
1. Enable *ALL* search plugins in Plasma Search settings, to show that this
isn't caused by insufficient result availability.
2. Type any query as described above (or see the video).
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.2
Kernel Version: 6.10.3-arch1-2 (64-bit)
Graphics Platform: Wayland
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