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KDevelop 4.5.2 available! (October 31, 2013)

Hey all,

KDevelop 4.5.2 is finally released! Go see the announcement on our website for more info:

Note that this release contains some serious crash fixes, so update asap, i.e. as soon as your packagers get to it :)

Enjoy and thanks to all contributors! Looking forward to KDevelop 4.6 already!

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KDevelop Project Filters (September 06, 2013)

Hey all!

Today, after a bit more than a month since I started working on it, I merged the projectfilter branches into KDevplatform/KDevelop. This is a generic configuration interface and library which allows users to customize which folders/files KDevelop includes in a project.

How to use it

Context Menu

The simplest way to use the new code to exclude items from a project, is to use the context menu. Simply right click on any folder/file (not the project root, or anything target related) and choose the “exclude item from project” action. This will then add a filter for the selected item(s). If you want to undo this, go to the project configuration (see below) and remove the filter.


For more advanced management of project filters, or to remove filters and/or adapt the default filters, you need to go to the project configuration and select the new “Project Filter” config page. This allows you to add new filters, remove existing ones or edit them, including reordering them.

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Akademy 2013 - A Blast! (July 21, 2013)


I’ve been gone for eight days and returned just a few hours ago to Berlin. It doesn’t feel like that. The last days went by in a blur of awesomeness! The reason why I didn’t write a single blog post in between is just that I never had a spare minute for that. I arrived on Thursday and instantly enjoyed the warmth of Spain / the Basque country and had a tasty and cheap Menu del Dia at a local Restaurant with fellow KDABians and other KDE friends. Then just a few hours later the first party started, near the old district of the city - amazing! More and more hackers and helpers arrived, the atmosphere was once again so good. The social aspect of this years Akademy was without comparison in my opinion - seriously: Hats off to the local team, you did an amazing job!

While the social events on the following days have been just as awesome or even awesomer to awesomest - I especially enjoyed the day trip and jumping into the ocean! - the technical side of Akademy delivered just as well: My favorite talks this year where Mirko’s about ThreadWeaver, which we heavily use in KDevelop. His roadmap and polished API looks much better than what we have nowadays and should allow for much nicer code which might even perform better - kudos!

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Valgrind Highlighting on BKO (July 05, 2013)

Hey all,

you didn’t hear anything from me since quite some time… Thing is, this is my last “regular” semester of university where I have two lab courses that are very time demanding. The year after, I’ll be spending time on my master thesis, which hopefully will allow for some more leisure time for KDE.

Anyhow, a small project which I just worked on to write some small lines of code again was to make my BKO backtrace highlighter work on Chromium. It requires the Tampermonkey extension to get more compatibility with Greasemonkey of Firefox fame, otherwise it works more or less out of the box!

After fixing some small other inconsistencies I can now say that it works fine in both, Firefox and Chromium! I furthermore took the liberty to extend its functionality a bit: You now also get highlighted Valgrind traces, i.e. generated by memcheck and other error reporting tools - yay!

highlighting of a Valgrind memcheck trace on with additional navigation helpers, using Chromium
highlighting of a Valgrind memcheck trace on with additional navigation helpers, using Chromium

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More BKO javascript goodness (July 04, 2013)

Hey all,

I’ve improved my javascript highlighter for backtraces on and fixed some bugs (e.g. the BUG 123456 links where lost before). Additionally I just added another feature that gives you a nice little navigation bar like this:

improved highlighting of backtraces on with additional navigation helpers
highlighted backtrace with navigation bar

Pressing crash scrolls the window to the [KCrash Handler] in that backtrace, prev thread and next thread do what you would think they do.

To get all the goodies, click this link to install the updated script in GreaseMonkey:

NOTE: This also works with Tampermonkey in Chromium!

Happy backtrace reading!

PS: Yeah, we really should get this by default into BKO… I’ll write a mail to the sysadmins now.

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Progress on JavaScript language support in KDevelop (January 26, 2013)

During the sprint in Vienna last year, Aleix and me laid the ground work for a QML/JS language support plugin for KDevelop. Sadly we two only have very limited time working on fancy new features such as that.

Thankfully someone stood up and started contributing - none other than Andrea Scarpino of ArchLinux KDE/Qt packaging fame. With some help of me and Sven he managed to get the JavaScript support into a much more shiny state - behold:

Colorful JavaScript Analysis in KDevelop
Colorful JavaScript Analysis in KDevelop

For simple JavaScript files we already have proper context browsing, uses and declarations. And all that in just a few lines of code thanks to the good work of the QtCreator team, whose JavaScript/QML parser we use (which is the one of the most complicated parts of a language support plugin). Thanks again, guys!

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New KDevelop Mailing Lists (November 29, 2012)

Hey all,

the KDevelop mailing lists have moved to the KDE infrastructure. See the news on and head over to the mailing lists site to find the locations of the new mailing lists.

Note: No users where migrated, thus you have to register again! To do that, sent an email to and/or with the subject subscribe.

Cheers, and again many thanks to the KDE sysadmin crew!

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C++11 platform support? (November 26, 2012)

Hello all!

I’m investigating the feasibility of allowing a subset of C++11 in the KDevelop code base, starting after the branch of 4.5 in a few weeks. I do not want to blindly start going that route just to realize afterwards that I’ve alienated a large portion of our user base. Thus I’d very much welcome if you could read through this blog post and give some feedback which we can build our decision on top.

Here’s the email I sent to the KDevelop development mailing list:

Is anyone opposed to open KDevelop 4.6 for C++11? I.e. that means we continue to work as-is and provide a kick-ass KDevelop 4.5. Once we branch 4.5, we enable C++11 mode globally and start using it in master.

  • KDevelop is a free time project and it should be fun to work on it. C++11 is quite a lot of fun, if not only because it’s new. This is actually the main reason for me to go down the C++11 route. This would also allow us to learn C+11 which is a benefit for those of us who do professional work-work programming.

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Git commit message highlighting in nano (November 24, 2012)

For those who use nano as their CLI editor of choice: Here’s a syntax highlighting file for Git commit messages which also supports the special KDE commit hook keywords.

    ##  syntax highlighting for git commit messages of KDE projects
    syntax "patch" ".git/COMMIT_EDITMSG$"
    # overlong lines
    color brightred "^.{70,}.+$"
    # KDE commit hook keywords, see:
    color yellow "(SVN_SILENT|GIT_SILENT|SVN_MERGE)"
    # comment
    color blue "^#.*$"
    # special comment lines
    color green "^# Changes to be committed:"
    color red "^# Changes not staged for commit:"
    color brightblue "^# Untracked files:"
    color brightblue "^# On branch .+$"
    color brightblue "^# Your branch is ahead of .+$"
    # diff files
    # meh - cannot match against \t ... should be: ^#\t.*$
    color cyan "^#[^ a-zA-Z0-9][^ ].*$"

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KDevelop 4.4.1 released! (November 08, 2012)

Hey all, just a quickie: KDevelop 4.4.1 is available!

It comes with mostly crash fixes and a few other bug fixes. I’d say: use it!


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