+1999-09-11 Mikael Djurfeldt <mdj@thalamus.nada.kth.se>
+
+* * boot-9.scm (using-readline?): New procedure: Returns #t if
+ readline is used by the repl run by this thread.
+ (handle-system-error): Print "Backtrace:" before backtrace since
+ this is no longer done by display-backtrace.
+
+ * debug.scm (frame-number->index): Optionally take stack as
+ argument.
+
+ * debugger.scm: Use the frame number abstraction which allows for
+ both forward and backward views of the stack
+ (write-frame-index-short, write-frame-index-long):
+ Use selector `frame-number';
+ (select-frame-absolute): Use frame-number->index.
+ ("backtrace"): Use builtin backtrace printing.
+ Use (ice-9 debug).
+ Use readline conditionally.
+
1999-09-11 Jim Blandy <jimb@savonarola.red-bean.com>
* regex.scm (fold-matches, list-matches): New functions.
* * debugger.scm: New file: Initial version of the Guile debugger
written by Chris Hanson. (The debugger isn't finished, but is
included in Guile anyway since it is already quite useful.)
- Use readline conditionally.
* * boot-9.scm (top-repl): Use (ice-9 debug) (ice-9 debugger) (ice-9
session) (ice-9 threads) (ice-9 regex) from guile-user only if