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* arith.h: Likewise.
* debug.c: Added copyright header.
* debug.h: Updated copyright year.
* eval.c: Likewise.
* eval.h: Likewise.
* filter.c: Likewise.
* filter.h: Likewise.
* gc.c: Likewise.
* gc.h: Likewise.
* hash.c: Likewise.
* hash.h: Likewise.
* lib.c: Likewise.
* lib.h: Likewise.
* match.c: Likewise.
* match.h: Likewise.
* parser.h: Likewise.
* regex.c: Likewise.
* regex.h: Likewise.
* stream.c: Likewise.
* stream.h: Likewise.
* txr.c: Likewise, and e-mail address.
* txr.h: Updated copyright year.
* unwind.c: Likewise.
* unwind.h: Likewise.
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in debug reporting.
* debug.c (debug): New argument, base.
* debug.h (debug_check): New argument, base.
(debug): Declaration updated.
* eval.c (do_eval): Pass new argument of debug_check as nil.
* match.c (LOG_MISMATCH, LOG_MATCH): Take into account base
when displaying character position.
(do_match_line): Pass base position to debug_check.
(match_files): Pass nil as base to debug_check.
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(debug): In backtrace, show the renaming pairs for unbound
variables (up_p_a_pairs) if they are present.
* debug.h (debug_begin): Renamed to debug_frame.
* eval.c (eval): Wrap debug_begin/debug_end around function dispatch,
so TXR Lisp functions are included in backtraces.
* match.c (h_fun): Follow rename of debug_begin to debug_frame.
Pass in evaluated args, not the original ones.
(v_fun): Likewise.
* unwind.c (uw_push_debug): bindings argument renamed to env.
Bugfix: args argument was being assigned to ub_p_a_pairs.
* unwind.h (struct uw_debug): Member bindings renamed to env.
(uw_push_debug): Declaration updated.
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and used for next/step/finish stepping.
* Makefile (OBJS): debug.o moved to OBJS-y or OBJS-.
(OBJS-y, OBJS-): New variables.
$(PROG): Depends on OBJS-y also.
clean: clean $(OBJS-y).
depend: include $(OBJS-y) in dependency generation.
* configure: Underscores and dashes are interchangeable in
configure variables.
(yaccname_given, yacc_given): Default value is y, not yes.
(debug_support): New config variable.
(CONFIG_DEBUG_SUPPORT): New config.h symbol.
* debug.c (debug_depth): New global variable.
(debug_block_s): New symbol variable.
(next_depth): New static variable.
(debug): Renamed some commands. Introduced separate next, step
and finish.
(debug_init): debug_block_s initialized.
* debug.h (debug_depth, debug_block_s): Declared.
(debug_enter, debug_leave, debug_return): New macros.
(debug_check, debug_init): Conditionally defined based on
if this is a debug build.
* dep.mk: Regenerated.
* eval.c (eval): Instrumented with debug_enter, debug_leave,
debug_return.
* match.c (match_line, v_fun, match_files): Likewise.
* txr.c (txr_main): Bail if -d or --debug used in build
that lacks debug support.
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* Makefile (OBJS): New object file debug.o.
* dep.mk: Updated.
* match.c (h_fun): Use debug_begin and debug_end macros
to set up a debug frame for backtracing.
(match_line, match_files): Call debug_check to give debugger a chance
to instrument call.
(v_fun): Use debug_begin and debug_end macros to set up a debug frame
for backtracing. Call debug_check to give debugger a chance to
instrument call.
* stream.c (struct strm_ops): New function pointer, flush.
(stdio_maybe_write_error): Wrong word in error message corrected.
(stdio_flush): New static function.
(stdio_ops, pipe_ops): New function entered into tables.
(flush_stream): New function.
* stream.h (flush_stream): Declared.
* txr.c (help): New options documented.
(main): call to debug_init added. New debug options parsed and
opt_debugger set accordingly.
* unwind.c (uw_push_debug, uw_current_frame): New function.
* unwind.h (uw_frtype): New enumeration member UW_DBG.
(struct uw_debug): New frame variant.
(union uw_frame): New member, db.
(uw_push_debug, uw_current_frame): Declared,
* debug.c: New file.
* debug.h: New file.
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