I’ve been having issues with the automatic updates and half-manually building things through Eclipse, so I decided to use a build system. Previously, the only experience I have with such systems is GNU make which isn’t particularly Java specific. So I decided to learn something new and try out Apache ANTas a build system. Essentially, I’ve added the following features:

• revision - get the SVN revision number to use as the current version
• compile - compile the code (required revision)
• dist - create a JAR file from the built code (requires compile)
• sign - sign the JAR files so they can be deployed (requires dist)
• deploy - create the files necessary for Webstart (requires dist, sign, and revision)

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Two minor bug fixes:

• Fixed the behavior of the bracket matcher so that the functions < and > actually work.
• Removed tabs on automatic formatting to avoid problems with different tab widths

And a new feature: Undo/Redo. Now any text field, specifically the REPL and the code editor have an undo/redo stack as they should have had all along. It just uses the Swing Undo/Redo API, so it wasn’t terribly hard to implement, but it was something that needed to be done. Hopefully this makes it easier on students that accidently delete things (this may have happened, ergo the new feature :-). New version is r178.

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A few new features today in r170, a stop button and a dialog to select syntax options.

First, the stop button. There’s one thing that I’ve been meaning to work on for quite a while: the ability to stop code that is currently running. To that end, I’ve added a new button to the interface (highlighted below) that will do exactly that. At the moment, pretty much all that it does is request that the currently running Kawa thread will stop. It isn’t perfect, but it’s better than nothing.

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There are just a few end of the month bug fixes and enhancements this time:

• (Hopefully finally) fixed the long standing Issue 2: Automatic indentation sometimes gets out of sync
• Added a recent documents menu
• Added an option to reset custom color scheme to the default
• Fixed an issue where the program wouldn’t close if text was waiting to be displayed

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A minor update related to Issue 42 on the Issue Tracker.

Essentially, I want to make everything output as they should in Scheme as opposed to how they do in Kawa/Java. For each case below, the first option is what we see now and the second is what we should see.

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To start off, I have a small list of bug fixes / minor improvements before I get to the real meat of what I’ve got for the day:

• Added ability to change font size
• Added a program icon (which doesn’t seem to work on OSX, I should look into this)
• Added an IconManager to deal with all of the menu icons
• Added option to reset the Scheme environment if it gets broken for whatever reason
• Changed prompt from »> to §, mostly because I just like the character (also a single character saves space)
• Fixed display, redirecting it to the REPL. Unfortunately trace still doesn’t work
• Bound true to #t and false to #f to make input and output match
• Fix for a problem that would prevent Wombat from closing on OS X

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Today saw another round of bug fixes:

• Internal swap of [] to () to make Kawa behave correctly (this is a hacky fix, I should figure out a better way to do this)
• Split the code for the REPL into seperate files for better organization
• Some sanity checks on bracket matching, preventing a few errors I was seeing

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Since I moved to Kawa, I’ve been having an issue with maintaining the state between calls to the interpreter. Everything works fine when I load and run an entire file at once (for example when loading the options files or actually debugging my own code), but when I try to run individual lines of code to add custom bindings, it doesn’t work.

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Today was a busy day of bug fixes, mostly minor. Here’s a nice list:

• Added building the webstart files to the automatic build system
• Removed references to the old SISC code
• Fixed a crash when the syntax definitions couldn’t be loaded successfully
• Fixed an error with dynamically reloading options
• Added better sanity checks to option loading, defaulting to known values if necessary

All of this has prompted a new build: r113, available here.

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Two big changes for the project today. I’ve changed the IDE I’m using from Netbeans to Eclipse. Then, the back-end scheme system will be changing from SISC to Kawa.

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