Category Archives: Common

Kate Vi Input Mode – GSoC 2011

I want to introduce you my GSoC-2011 project. I was working on improvement the vi input mode for the Kate part.

There are a lot of improvements for normal mode. Now it’s able to use jump list by pressing ctrl-i/ctrl-o in normal mode like in vim. And now not only registers but also marks, and jumps stored in the config of the session. H, M and L commands moves cursor to the first(Home), Middle and Last line of the screen. To go to the any percent of the document you can use the % command by typing the number of percent(1-100) before it. gk and gj motions will make you able to go visual(display) lines up and down. It’s useful when you using line wrap.

You can split the screen vertically and horizontally by ctrl-s and ctrl-v shortcuts and move around them in different directions using ctrl-w{h,j,k,l,w} or also ctrl-w{←,↑,↓,→}.

In insert mode added commands ctrl-r+[register] to insert the contents of a register and ctrl-o to switch to the normal mode only for a one command and automatically get back to insert. The ctrl-a, ctrl-x command now increase and decrease the negative numbers too.

There are also some new command-line features. Now you can use the marks for a command ranges. It’s possible to add and subtract line numbers in the ranges many times. For example command :.+3d will delete the third line after current position and the command :’a,’b-1y will yank the line-wise range between the line of mark ‘a’ and the one line before the line of ‘b‘ mark.

Also there a some new basic vim commands:

  • :d or :delete – delete range;
  • :c or :change – change range;
  • :j – join all the lines in range;
  • :> – indent range;
  • :< – unindent range;
  • :y or :yank – yank range;
  • :ma or :mark or :k – set mark;
  • :bn – switch to next buffer(document);
  • :bp – switch to previous buffer(document);
  • :bf – to first buffer;
  • :bl – to last buffer;
  • :b [N] or :buffer [N] – to Nth buffer

Text objects are also improved and fixed. There are new objects: ( a{ , i{ , a< , i< , a` , i` ). And now they normally works with nested objects. So for now the i( object (for position of multiply symbol *) will be “(1*2/(2+3)–4)” instead of “(1*2/(2+3)–4)”. Some of the objects like (),{},[],<> works with several lines.

Visual mode now is integrated with mouse, so the mouse dragging starts the visual mode. All kind of Kate-way selection is also starts the visual mode. For example if you use “Select all” menu line or shortcut ctrl-a(by default) this will starts visual mode with the selected text and waits you for a command to execute :) . One point mouse click will exit the visual mode. Kate selection and vi mode selection is actually the same thing now. So you can, say, to select a bloc by using the Visual Block mode (ctrl-v), to do a context menu on them and to copy them to a clipboard :). When you exit visual mode the ‘< and ‘> marks have a start and end position of selection. It useful when you want to execute some command line command on the selected text. Just press the “:” when you select something and it automatically fill the command line with “‘<,’>” to have a quick access to selected area.

Vi marks and Kate bookmarks are integrated too. If you set the mark then this line becomes bookmarked by Kate. And vice versa: if you set a Kate’s bookmark and there no vi marks on this like vi mode sets the vim mark on this line and zero column, and shows you what letter for this mark is used.You can see the position of all vi marks in the bookmark menu in the menu bar or also in the context menu.

I hope this features will make you feel even more comfortable while using Kate. You can try it now in the git version of Kate.
Any notice or bug report are welcome !

Kate progress, Git and happy new year ;)

As Dominik already points out in his blog, Kate has made nice progress for KDE 4.6.

Some of the latest fixes, like for some nasty search bug didn’t make it in RC1, btw., I was too lame with Git -> SVN syncs.
Anyway, I have now synced and backported to KDE 4.6 branch all pending fixes.

For the next KDE SC release 4.7 (here you go, I wrote SC :)), I hope this syncing will no longer be necessary.
At least Kate app + part + KWrite should then be only in the kate.git.
I can live with ktexteditor remaining in kdelibs, if removing that and still keeping BC and SC would be too much work. But part and app are at most runtime dependencies anyway.

Last but not least, I wish you all a good start into a happy new year ;)

Kate on git.kde.org

Goodbye to Gitorious, welcome to git.kde.org.

You can find the Kate project here.
The “Get It!” page on the homepage is updated, too.
Push access is still restricted, but that will not last for ever ;)

Thanks to the sysadmin team of KDE, thanks guys, for all the work you put into the new infrastructure (and to help me with my faults ;)
And thanks to Gitorious, it was a nice time there, and I learned to appreciate Git, like many Kate developers (some appreciated it even before).

Like before, all changes in SVN and Git will be synced by me, as Kate is still released with KDE SC from SVN.

For the future I would like (and most kate devs, too) to develop solely in the Kate repository and have Kate released from there with KDE SC (instead spread over several modules).
But this must still be discussed with the release team after 4.6.
Beside, this means no split off from KDE, but it makes contributing to Kate that much easier, given atm you would need to checkout/clone kdelibs + kdebase + kdesdk and try to build there the Kate relevant parts, which is just no fun, if you just want to hack on some small bug or feature :/