Moved from yacc to GNU "bison --yacc"
No longer linking with flex library
Activated -Wall -W for parser.y
Removed -DYY_NO_UNPUT from lexer compilation (now done via file option)
smaller data structures. The first design pointed to by designs is always
the one we need (except for ops on *all* designs).
The first design in config file is now default design (no DEF_DESIGN anymore).
New tokens to, with, global, once
Added LEX_MAX_WARN macro to limit number of lex errors printed per design
Replaced exit()s with return YUNREC where errors are not fatal
Eliminated duplicate code by introducing intermediate rules
New tokens YTO, YWITH, and YRXPFLAG to reduce strcasecmp() usage
New token YUNREC for integration of lexer into error handling
Some code restructuring and rule renaming for better consistency
Added out-of-memory-checks to many strdup()s and such
Replaced DEBUG macro with PARSER_DEBUG, which is now activated in boxes.h
Added rule first_rule, which performs init and cleanup formerly done in main()
Introduced symbols YBOX and YEND
Added indent mode command line option for grammar overrides
Moved empty_side() to shape.c after small change in signature
Added text-in-block justification (j) to alignment option (-a)
along with stdarg.h include
Exported input global data and empty_side() function
Declared non-exported functions static
Moved horiz_precalc(), vert_precalc(), horiz_assemble(), vert_assemble(),
horiz_generate(), vert_generate(), generate_box() and output_box() to a
new file generate.c
Moved best_match(), hmm(), detect_horiz(), detect_design(), remove_box()
and output_input() to a new file remove.c
Moved iscorner(), on_side(), isempty(), shapecmp(), both_on_side(),
shape_distance(), empty_side(), highest(), and widest() as well as
some data structures and macros related to shapes to new file shape.c
Moved MAX_TABSTOP, LINE_MAX macros to boxes.h
Moved BMAX, strrstr, btrim(), yyerror(), expand_tabs_into(), regerror(),
empty_line() to a new file tools.c, added #include tools.h
Some cleanup in main()
Declared style_sort() helper function static
Renamed strrstr() to my_strnrstr() (now defined in tools.c)
Default design is now defined by DEF_DESIGN macro
Moved struct opt_t to boxes.h
Bugfix: segfaulted if shape was bigger than input when detecting design
Bugfix: Padding was not removed when box was removed
Bugfix: Forgot null byte when removing west box side
Changed select_design(), because default design value now set in process_commandline()
Added opt_t and opt global variable from boxes.c
Moved BFREE macro and yyerror() and empty_line() prototypes to tools.h
Added LINE_MAX and MAX_TABSTOP macros from boxes.c
Added #define DEBUG and REGEXP_DEBUG. This will centrally activate
debugging.
Move apply_substitutions() regexp handling function up in file
Use apply_substitutions() in read_input() routine also
Moved "extern int yyparse()" prototype to start of file
