Thanks for the tip! That'll make it a LOT easier to debug. = )
I'm in a research group at MIT developing automated planning algorithms. We've used AllegroCL for a long time, but we're finding more and more of a need to integrate our Lisp code base with Java. ABCL has a very nice Lisp-Java interface that we're leveraging so we don't have to read/write files or use a TPC/RPC/messaging interface.
- David W.
Quoting Erik Huelsmann ehuels@gmail.com:
Hi David,
On Mon, May 16, 2011 at 8:35 PM, David C Wang davidcw@mit.edu wrote:
I recently started using ABCL, and until now I've been able to use it fine through the Emacs/Slime interface.
I'm now trying to use ABCL directly from the command line, but I have no idea what the debugger commands are. Once a runtime error occurs and I am offered the list of possible restarts, how do I check the current frame and step through the backtrace?
:bt <num> lists the last <num> frames in the stack. These additional commands are available:
D:\abcl\abcl-j>abcl Armed Bear Common Lisp 0.26.0-dev-svn-13273:13274M Java 1.6.0_20 Sun Microsystems Inc. Java HotSpot(TM) Client VM Low-level initialization completed in 1.434 seconds. Startup completed in 5.417 seconds. Type ":help" for a list of available commands. CL-USER(1): :help
COMMAND ABBR DESCRIPTION apropos ap apropos bt backtrace n stack frames (default 8) cd change default directory cf compile file(s) cload cl compile and load file(s) continue cont invoke restart n describe de describe an object error err print the current error message exit ex exit lisp frame fr set the value of cl:* to be frame n (default 0) help he print this help inspect in inspect an object istep i navigate within inspection of an object ld load a file ls list directory macroexpand ma macroexpand an expression package pa change *PACKAGE* pwd pw print current directory reset res return to top level rq require a module trace tr trace function(s) untrace untr untrace function(s)
Commands must be prefixed by the command character, which is ':' by default.
Is there documentation on this somewhere? Or, can someone tell me what some of the basic commands are?
The documentation (as terse as it is) is under :help :-)
The way to select a specific restart is by entering its number.
I'm running the latest ABCL on Fedora 14 x64.
I hope you like it. If you don't mind me asking: what are you (planning to) using ABCL for? Scripting language? Main language? Which area of application? I'm always interested to hear people's stories about their ABCL experience.
Bye,
Erik.