diff -Naur App-a2p-1.007.orig/a2p.y App-a2p-1.007.yacc/a2p.y
--- App-a2p-1.007.orig/a2p.y 1970-01-01 01:00:00.000000000 +0100
+++ App-a2p-1.007.yacc/a2p.y 2015-01-03 08:06:54.249838926 +0100
@@ -0,0 +1,432 @@
+%{
+/* $RCSfile: a2p.y,v $$Revision: 4.1 $$Date: 92/08/07 18:29:12 $
+ *
+ * Copyright (C) 1991, 1992, 1993, 1994, 1996, 1997, 1999, 2000,
+ * by Larry Wall and others
+ *
+ * You may distribute under the terms of either the GNU General Public
+ * License or the Artistic License, as specified in the README file.
+ *
+ * $Log: a2p.y,v $
+ */
+
+#include "INTERN.h"
+#include "a2p.h"
+
+int root;
+int begins = Nullop;
+int ends = Nullop;
+
+%}
+%token BEGIN END
+%token REGEX
+%token SEMINEW NEWLINE COMMENT
+%token FUN1 FUNN GRGR
+%token PRINT PRINTF SPRINTF_OLD SPRINTF_NEW SPLIT
+%token IF ELSE WHILE FOR IN
+%token EXIT NEXT BREAK CONTINUE RET
+%token GETLINE DO SUB GSUB MATCH
+%token FUNCTION USERFUN DELETE
+
+%right ASGNOP
+%right '?' ':'
+%left OROR
+%left ANDAND
+%left IN
+%left NUMBER VAR SUBSTR INDEX
+%left MATCHOP
+%left RELOP '<' '>'
+%left OR
+%left STRING
+%left '+' '-'
+%left '*' '/' '%'
+%right UMINUS
+%left NOT
+%right '^'
+%left INCR DECR
+%left FIELD VFIELD SVFIELD
+
+%%
+
+program : junk hunks
+ { root = oper4(OPROG,$1,begins,$2,ends); }
+ ;
+
+begin : BEGIN '{' maybe states '}' junk
+ { begins = oper4(OJUNK,begins,$3,$4,$6); in_begin = FALSE;
+ $$ = Nullop; }
+ ;
+
+end : END '{' maybe states '}'
+ { ends = oper3(OJUNK,ends,$3,$4); $$ = Nullop; }
+ | end NEWLINE
+ { $$ = $1; }
+ ;
+
+hunks : hunks hunk junk
+ { $$ = oper3(OHUNKS,$1,$2,$3); }
+ | /* NULL */
+ { $$ = Nullop; }
+ ;
+
+hunk : patpat
+ { $$ = oper1(OHUNK,$1); need_entire = TRUE; }
+ | patpat '{' maybe states '}'
+ { $$ = oper2(OHUNK,$1,oper2(OJUNK,$3,$4)); }
+ | FUNCTION USERFUN '(' arg_list ')' maybe '{' maybe states '}'
+ { fixfargs($2,$4,0); $$ = oper5(OUSERDEF,$2,$4,$6,$8,$9); }
+ | '{' maybe states '}'
+ { $$ = oper2(OHUNK,Nullop,oper2(OJUNK,$2,$3)); }
+ | begin
+ | end
+ ;
+
+arg_list: expr_list
+ { $$ = rememberargs($$); }
+ ;
+
+patpat : cond
+ { $$ = oper1(OPAT,$1); }
+ | cond ',' cond
+ { $$ = oper2(ORANGE,$1,$3); }
+ ;
+
+cond : expr
+ | match
+ | rel
+ | compound_cond
+ | cond '?' expr ':' expr
+ { $$ = oper3(OCOND,$1,$3,$5); }
+ ;
+
+compound_cond
+ : '(' compound_cond ')'
+ { $$ = oper1(OCPAREN,$2); }
+ | cond ANDAND maybe cond
+ { $$ = oper3(OCANDAND,$1,$3,$4); }
+ | cond OROR maybe cond
+ { $$ = oper3(OCOROR,$1,$3,$4); }
+ | NOT cond
+ { $$ = oper1(OCNOT,$2); }
+ ;
+
+rel : expr RELOP expr
+ { $$ = oper3(ORELOP,$2,$1,$3); }
+ | expr '>' expr
+ { $$ = oper3(ORELOP,string(">",1),$1,$3); }
+ | expr '<' expr
+ { $$ = oper3(ORELOP,string("<",1),$1,$3); }
+ | '(' rel ')'
+ { $$ = oper1(ORPAREN,$2); }
+ ;
+
+match : expr MATCHOP expr
+ { $$ = oper3(OMATCHOP,$2,$1,$3); }
+ | expr MATCHOP REGEX
+ { $$ = oper3(OMATCHOP,$2,$1,oper1(OREGEX,$3)); }
+ | REGEX %prec MATCHOP
+ { $$ = oper1(OREGEX,$1); }
+ | '(' match ')'
+ { $$ = oper1(OMPAREN,$2); }
+ ;
+
+expr : term
+ { $$ = $1; }
+ | expr term
+ { $$ = oper2(OCONCAT,$1,$2); }
+ | expr '?' expr ':' expr
+ { $$ = oper3(OCOND,$1,$3,$5); }
+ | variable ASGNOP cond
+ {
+ $$ = oper3(OASSIGN,$2,$1,$3);
+ if ((ops[$1].ival & 255) == OFLD)
+ lval_field = TRUE;
+ else if ((ops[$1].ival & 255) == OVFLD)
+ lval_field = TRUE;
+ }
+ ;
+
+sprintf : SPRINTF_NEW
+ | SPRINTF_OLD ;
+
+term : variable
+ { $$ = $1; }
+ | NUMBER
+ { $$ = oper1(ONUM,$1); }
+ | STRING
+ { $$ = oper1(OSTR,$1); }
+ | term '+' term
+ { $$ = oper2(OADD,$1,$3); }
+ | term '-' term
+ { $$ = oper2(OSUBTRACT,$1,$3); }
+ | term '*' term
+ { $$ = oper2(OMULT,$1,$3); }
+ | term '/' term
+ { $$ = oper2(ODIV,$1,$3); }
+ | term '%' term
+ { $$ = oper2(OMOD,$1,$3); }
+ | term '^' term
+ { $$ = oper2(OPOW,$1,$3); }
+ | term IN VAR
+ { $$ = oper2(ODEFINED,aryrefarg($3),$1); }
+ | variable INCR
+ {
+ $$ = oper1(OPOSTINCR,$1);
+ if ((ops[$1].ival & 255) == OFLD)
+ lval_field = TRUE;
+ else if ((ops[$1].ival & 255) == OVFLD)
+ lval_field = TRUE;
+ }
+ | variable DECR
+ {
+ $$ = oper1(OPOSTDECR,$1);
+ if ((ops[$1].ival & 255) == OFLD)
+ lval_field = TRUE;
+ else if ((ops[$1].ival & 255) == OVFLD)
+ lval_field = TRUE;
+ }
+ | INCR variable
+ {
+ $$ = oper1(OPREINCR,$2);
+ if ((ops[$2].ival & 255) == OFLD)
+ lval_field = TRUE;
+ else if ((ops[$2].ival & 255) == OVFLD)
+ lval_field = TRUE;
+ }
+ | DECR variable
+ {
+ $$ = oper1(OPREDECR,$2);
+ if ((ops[$2].ival & 255) == OFLD)
+ lval_field = TRUE;
+ else if ((ops[$2].ival & 255) == OVFLD)
+ lval_field = TRUE;
+ }
+ | '-' term %prec UMINUS
+ { $$ = oper1(OUMINUS,$2); }
+ | '+' term %prec UMINUS
+ { $$ = oper1(OUPLUS,$2); }
+ | '(' cond ')'
+ { $$ = oper1(OPAREN,$2); }
+ | GETLINE
+ { $$ = oper0(OGETLINE); }
+ | GETLINE variable
+ { $$ = oper1(OGETLINE,$2); }
+ | GETLINE '<' expr
+ { $$ = oper3(OGETLINE,Nullop,string("<",1),$3);
+ if (ops[$3].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
+ | GETLINE variable '<' expr
+ { $$ = oper3(OGETLINE,$2,string("<",1),$4);
+ if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
+ | term 'p' GETLINE
+ { $$ = oper3(OGETLINE,Nullop,string("|",1),$1);
+ if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
+ | term 'p' GETLINE variable
+ { $$ = oper3(OGETLINE,$4,string("|",1),$1);
+ if (ops[$1].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
+ | FUN1
+ { $$ = oper0($1); need_entire = do_chop = TRUE; }
+ | FUN1 '(' ')'
+ { $$ = oper1($1,Nullop); need_entire = do_chop = TRUE; }
+ | FUN1 '(' expr ')'
+ { $$ = oper1($1,$3); }
+ | FUNN '(' expr_list ')'
+ { $$ = oper1($1,$3); }
+ | USERFUN '(' expr_list ')'
+ { $$ = oper2(OUSERFUN,$1,$3); }
+ | SPRINTF_NEW '(' expr_list ')'
+ { $$ = oper1(OSPRINTF,$3); }
+ | sprintf expr_list
+ { $$ = oper1(OSPRINTF,$2); }
+ | SUBSTR '(' expr ',' expr ',' expr ')'
+ { $$ = oper3(OSUBSTR,$3,$5,$7); }
+ | SUBSTR '(' expr ',' expr ')'
+ { $$ = oper2(OSUBSTR,$3,$5); }
+ | SPLIT '(' expr ',' VAR ',' expr ')'
+ { $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),$7); }
+ | SPLIT '(' expr ',' VAR ',' REGEX ')'
+ { $$ = oper3(OSPLIT,$3,aryrefarg(numary($5)),oper1(OREGEX,$7));}
+ | SPLIT '(' expr ',' VAR ')'
+ { $$ = oper2(OSPLIT,$3,aryrefarg(numary($5))); }
+ | INDEX '(' expr ',' expr ')'
+ { $$ = oper2(OINDEX,$3,$5); }
+ | MATCH '(' expr ',' REGEX ')'
+ { $$ = oper2(OMATCH,$3,oper1(OREGEX,$5)); }
+ | MATCH '(' expr ',' expr ')'
+ { $$ = oper2(OMATCH,$3,$5); }
+ | SUB '(' expr ',' expr ')'
+ { $$ = oper2(OSUB,$3,$5); }
+ | SUB '(' REGEX ',' expr ')'
+ { $$ = oper2(OSUB,oper1(OREGEX,$3),$5); }
+ | GSUB '(' expr ',' expr ')'
+ { $$ = oper2(OGSUB,$3,$5); }
+ | GSUB '(' REGEX ',' expr ')'
+ { $$ = oper2(OGSUB,oper1(OREGEX,$3),$5); }
+ | SUB '(' expr ',' expr ',' expr ')'
+ { $$ = oper3(OSUB,$3,$5,$7); }
+ | SUB '(' REGEX ',' expr ',' expr ')'
+ { $$ = oper3(OSUB,oper1(OREGEX,$3),$5,$7); }
+ | GSUB '(' expr ',' expr ',' expr ')'
+ { $$ = oper3(OGSUB,$3,$5,$7); }
+ | GSUB '(' REGEX ',' expr ',' expr ')'
+ { $$ = oper3(OGSUB,oper1(OREGEX,$3),$5,$7); }
+ ;
+
+variable: VAR
+ { $$ = oper1(OVAR,$1); }
+ | VAR '[' expr_list ']'
+ { $$ = oper2(OVAR,aryrefarg($1),$3); }
+ | FIELD
+ { $$ = oper1(OFLD,$1); }
+ | SVFIELD
+ { $$ = oper1(OVFLD,oper1(OVAR,$1)); }
+ | VFIELD term
+ { $$ = oper1(OVFLD,$2); }
+ ;
+
+expr_list
+ : expr
+ | clist
+ | /* NULL */
+ { $$ = Nullop; }
+ ;
+
+clist : expr ',' maybe expr
+ { $$ = oper3(OCOMMA,$1,$3,$4); }
+ | clist ',' maybe expr
+ { $$ = oper3(OCOMMA,$1,$3,$4); }
+ | '(' clist ')' /* these parens are invisible */
+ { $$ = $2; }
+ ;
+
+junk : junk hunksep
+ { $$ = oper2(OJUNK,$1,$2); }
+ | /* NULL */
+ { $$ = Nullop; }
+ ;
+
+hunksep : ';'
+ { $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
+ | SEMINEW
+ { $$ = oper2(OJUNK,oper0(OSEMICOLON),oper0(ONEWLINE)); }
+ | NEWLINE
+ { $$ = oper0(ONEWLINE); }
+ | COMMENT
+ { $$ = oper1(OCOMMENT,$1); }
+ ;
+
+maybe : maybe nlstuff
+ { $$ = oper2(OJUNK,$1,$2); }
+ | /* NULL */
+ { $$ = Nullop; }
+ ;
+
+nlstuff : NEWLINE
+ { $$ = oper0(ONEWLINE); }
+ | COMMENT
+ { $$ = oper1(OCOMMENT,$1); }
+ ;
+
+separator
+ : ';' maybe
+ { $$ = oper2(OJUNK,oper0(OSEMICOLON),$2); }
+ | SEMINEW maybe
+ { $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
+ | NEWLINE maybe
+ { $$ = oper2(OJUNK,oper0(OSNEWLINE),$2); }
+ | COMMENT maybe
+ { $$ = oper2(OJUNK,oper1(OSCOMMENT,$1),$2); }
+ ;
+
+states : states statement
+ { $$ = oper2(OSTATES,$1,$2); }
+ | /* NULL */
+ { $$ = Nullop; }
+ ;
+
+statement
+ : simple separator maybe
+ { $$ = oper2(OJUNK,oper2(OSTATE,$1,$2),$3); }
+ | ';' maybe
+ { $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSEMICOLON),$2)); }
+ | SEMINEW maybe
+ { $$ = oper2(OSTATE,Nullop,oper2(OJUNK,oper0(OSNEWLINE),$2)); }
+ | compound
+ ;
+
+simpnull: simple
+ | /* NULL */
+ { $$ = Nullop; }
+ ;
+
+simple
+ : expr
+ | PRINT expr_list redir expr
+ { $$ = oper3(OPRINT,$2,$3,$4);
+ do_opens = TRUE;
+ saw_ORS = saw_OFS = TRUE;
+ if (!$2) need_entire = TRUE;
+ if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
+ | PRINT expr_list
+ { $$ = oper1(OPRINT,$2);
+ if (!$2) need_entire = TRUE;
+ saw_ORS = saw_OFS = TRUE;
+ }
+ | PRINTF expr_list redir expr
+ { $$ = oper3(OPRINTF,$2,$3,$4);
+ do_opens = TRUE;
+ if (!$2) need_entire = TRUE;
+ if (ops[$4].ival != OSTR + (1<<8)) do_fancy_opens = TRUE; }
+ | PRINTF expr_list
+ { $$ = oper1(OPRINTF,$2);
+ if (!$2) need_entire = TRUE;
+ }
+ | BREAK
+ { $$ = oper0(OBREAK); }
+ | NEXT
+ { $$ = oper0(ONEXT); }
+ | EXIT
+ { $$ = oper0(OEXIT); }
+ | EXIT expr
+ { $$ = oper1(OEXIT,$2); }
+ | CONTINUE
+ { $$ = oper0(OCONTINUE); }
+ | RET
+ { $$ = oper0(ORETURN); }
+ | RET expr
+ { $$ = oper1(ORETURN,$2); }
+ | DELETE VAR '[' expr_list ']'
+ { $$ = oper2(ODELETE,aryrefarg($2),$4); }
+ ;
+
+redir : '>' %prec FIELD
+ { $$ = oper1(OREDIR,string(">",1)); }
+ | GRGR
+ { $$ = oper1(OREDIR,string(">>",2)); }
+ | '|'
+ { $$ = oper1(OREDIR,string("|",1)); }
+ ;
+
+compound
+ : IF '(' cond ')' maybe statement
+ { $$ = oper2(OIF,$3,bl($6,$5)); }
+ | IF '(' cond ')' maybe statement ELSE maybe statement
+ { $$ = oper3(OIF,$3,bl($6,$5),bl($9,$8)); }
+ | WHILE '(' cond ')' maybe statement
+ { $$ = oper2(OWHILE,$3,bl($6,$5)); }
+ | DO maybe statement WHILE '(' cond ')'
+ { $$ = oper2(ODO,bl($3,$2),$6); }
+ | FOR '(' simpnull ';' cond ';' simpnull ')' maybe statement
+ { $$ = oper4(OFOR,$3,$5,$7,bl($10,$9)); }
+ | FOR '(' simpnull ';' ';' simpnull ')' maybe statement
+ { $$ = oper4(OFOR,$3,string("",0),$6,bl($9,$8)); }
+ | FOR '(' expr ')' maybe statement
+ { $$ = oper2(OFORIN,$3,bl($6,$5)); }
+ | '{' maybe states '}' maybe
+ { $$ = oper3(OBLOCK,oper2(OJUNK,$2,$3),Nullop,$5); }
+ ;
+
+%%
+
+int yyparse (void);
+
+#include "a2py.c"