Bug 349151

No changes on the Konversation side, reassigning to Sonnet.

Other Information:
I can get UK English Spelling Checking from System Settings > Regional Settings > Spell Check and changing from US English to American English (United States) [GB], applying and re-starting konversation.
However, when I try to go back to System Settings > Regional Settings > Spell Check to re-set back to US English, that option is now missing entirely.

I'd suggest installing aspell-en or so.

(In reply to Eike Hein from comment #3)
> I'd suggest installing aspell-en or so.

I think I have it installed:
apt-cache policy aspell-en
aspell-en:
  Installed: 7.1-0-1.1
  Candidate: 7.1-0-1.1
  Version table:
 *** 7.1-0-1.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ wily/main i386 Packages
        100 /var/lib/dpkg/status

I can confirm this bug.

Reproducing steps:
1. Open ~/.config/KDE/Sonnet.conf
2. Set defaultLangauge to an invalid value

Setting 'defaultLangauge' in "~/.config/KDE/Sonnet.conf" to an invalid value
(language with no dictionarys available) breaks the red line. Changing the language
on runtime does not help, if a valid dictionary is selected at runtime suggestions
come in as expected, but red line does not appear.

Problem is present at git-HEAD.

can you retry after installing hunspell-en-us ?

(In reply to Nick Shaforostoff from comment #7)
> can you retry after installing hunspell-en-us ?

It is already installed:
apt-cache policy hunspell-en-us
hunspell-en-us:
  Installed: 20070829-6ubuntu2
  Candidate: 20070829-6ubuntu2
  Version table:
 *** 20070829-6ubuntu2 0
        500 http://us.archive.ubuntu.com/ubuntu/ wily/main i386 Packages
        100 /var/lib/dpkg/status

in vanilla ode the hunspell plugin was looking in /usr/share/myspell/dicts for dictionaries, but at least in debian and ubuntu they are installed into /usr/share/hunspell. so i have added this path alternative to git HEAD: 
https://projects.kde.org/projects/frameworks/sonnet/repository/revisions/master/entry/src/plugins/hunspell/hunspellclient.cpp  (see in the bottom)

maybe with that it will start working?

also, can you specify the last version of konversation + KF/kdelibs where spellcheck was working for you?

For what it's worth, fedora/redhat uses (just) /usr/share/myspell , so I ended up using:
http://pkgs.fedoraproject.org/cgit/kf5-sonnet.git/tree/sonnet-5.10.0-myspell_path.patch

Does *anyone* still use /usr/share/myspell/dicts ?  (if not, maybe that one can be dropped and replaced with /usr/share/myspell)

Too bad hunspell seems to have no api to query for dictionary paths :(

ok, I will adapt sonnet code to /usr/share/myspell as well later this evening. also i'm thinking about a CMake test to set up the directory which sonnet should check first in order to minimize disk queries on application startup...

Git commit 0e6edac621fbd366b126ebd851fbea21355e02d0 by Nick Shaforostoff.
Committed on 15/09/2015 at 22:25.
Pushed by shaforo into branch 'master'.

CHANGELOG: look for dicts in /usr/share/hunspell by default, this is a hunspell plugin, right?

CHANGELOG: add compile-time check to use /usr/share/myspell if /usr/share/hunspell doesn't exist
CHANGELOG: fix Highlighter::setCurrentLanguage() for the case when previous language was invalid

note: i had spellcheck broken on my machine because i had installed myspell-ru which uses KOI8-R encoding,
while hunspell-ru uses UTF-8 as expected

M  +7    -12   src/core/loader.cpp
M  +6    -0    src/plugins/hunspell/CMakeLists.txt
M  +7    -11   src/plugins/hunspell/hunspellclient.cpp
M  +4    -9    src/plugins/hunspell/hunspelldict.cpp
M  +13   -5    src/plugins/hunspell/hunspelldict.h
M  +4    -3    src/ui/highlighter.cpp

http://commits.kde.org/sonnet/0e6edac621fbd366b126ebd851fbea21355e02d0

Marco, can you test the change? if you need assistance with building and installing sonnet i'm ready to help you

(In reply to Nick Shaforostoff from comment #13)
> Marco, can you test the change? if you need assistance with building and
> installing sonnet i'm ready to help you

I know I can install a .deb, but I do not know how to create one.
Do I need to:
1: Extract the source, and I assume place it in a temporary directory (Is there some kind of git command)?
2: Compile the source (Is there a make, and how do I invoke it)?
3: Create the package (Is that a debbuild, or something like that?)
4: Install the package (I can do that, assuming the .deb resolves any dependencies)

sudo apt-get install cmake libkf5sonnet-dev git
git clone git://anongit.kde.org/sonnet
mkdir sonnet/build
cd sonnet/build
cmake ..
#here check for errors and install missing -dev packages if needed
make
sudo cp ./src/plugins/hunspell/hunspell.so /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/sonnet/hunspell.so

after that you can return to original state by issuing
apt-get install --reinstall sonnet-plugins

Created attachment 94612 [details]
Output from CMake

Created attachment 94613 [details]
CMake Error Log

This appears to be resolved with the daily builds of Kubuntu 16.04 after upgrading Plasma to 5.5.3 and Qt to 5.5.1.