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- introduce interval_dup in str.c
- use it to replace .for parsing with something approaching sanity.
(this removes one of the few most blatant misuses of Bufs in make.

More changes to come... patch reviewed by ho@

/*	$OpenBSD: extern.h,v 1.12 1999/12/06 22:18:56 espie Exp $	*/
/*	$NetBSD: nonints.h,v 1.12 1996/11/06 17:59:19 christos Exp $	*/

/*-
 * Copyright (c) 1988, 1989, 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * Copyright (c) 1989 by Berkeley Softworks
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)nonints.h	8.3 (Berkeley) 3/19/94
 */

/* arch.c */
ReturnStatus Arch_ParseArchive __P((char **, Lst, GNode *));
void Arch_Touch __P((GNode *));
void Arch_TouchLib __P((GNode *));
time_t Arch_MTime __P((GNode *));
time_t Arch_MemMTime __P((GNode *));
void Arch_FindLib __P((GNode *, Lst));
Boolean Arch_LibOODate __P((GNode *));
void Arch_Init __P((void));
void Arch_End __P((void));
int Arch_IsLib __P((GNode *));

/* compat.c */
void Compat_Run __P((Lst));

/* cond.c */
int Cond_Eval __P((char *));
void Cond_End __P((void));

/* for.c */
int For_Eval __P((char *));
void For_Run  __P((void));

/* main.c */
void Main_ParseArgLine __P((char *));
int main __P((int, char **));
char *Cmd_Exec __P((char *, char **));
void Error __P((char *, ...));
void Fatal __P((char *, ...));
void Punt __P((char *, ...));
void DieHorribly __P((void));
int PrintAddr __P((ClientData, ClientData));
void Finish __P((int));
char *estrdup __P((const char *));
void *emalloc __P((size_t));
/* efree(x) works when x==NULL. STDC behavior, may need some different
 * definition for cross-builds on deficient systems */
#define efree	free
void *erealloc __P((void *, size_t));
void enomem __P((void));
int eunlink __P((const char *));

/* make.c */
int Make_TimeStamp __P((GNode *, GNode *));
Boolean Make_OODate __P((GNode *));
int Make_HandleUse __P((GNode *, GNode *));
void Make_Update __P((GNode *));
void Make_DoAllVar __P((GNode *));
Boolean Make_Run __P((Lst));

/* parse.c */
void Parse_Error __P((int, char *, ...));
Boolean Parse_AnyExport __P((void));
Boolean Parse_IsVar __P((char *));
void Parse_DoVar __P((char *, GNode *));
void Parse_AddIncludeDir __P((char *));
void Parse_File __P((char *, FILE *));
void Parse_Init __P((void));
void Parse_End __P((void));
void Parse_FromString __P((char *, unsigned long));
Lst Parse_MainName __P((void));
unsigned long Parse_Getlineno __P((void));

/* str.c */
void str_init __P((void));
void str_end __P((void));
char *str_concat __P((char *, char *, int));
char **brk_string __P((char *, int *, Boolean, char **));
int Str_Match __P((char *, char *));
char *Str_SYSVMatch __P((char *, char *, int *len));
void Str_SYSVSubst __P((Buffer, char *, char *, int));
char *interval_dup __P((const char *begin, const char *end));

/* suff.c */
void Suff_ClearSuffixes __P((void));
Boolean Suff_IsTransform __P((char *));
GNode *Suff_AddTransform __P((char *));
int Suff_EndTransform __P((ClientData, ClientData));
void Suff_AddSuffix __P((char *));
Lst Suff_GetPath __P((char *));
void Suff_DoPaths __P((void));
void Suff_AddInclude __P((char *));
void Suff_AddLib __P((char *));
void Suff_FindDeps __P((GNode *));
void Suff_SetNull __P((char *));
void Suff_Init __P((void));
void Suff_End __P((void));
void Suff_PrintAll __P((void));

/* targ.c */
void Targ_Init __P((void));
void Targ_End __P((void));
GNode *Targ_NewGN __P((char *));
GNode *Targ_FindNode __P((char *, int));
Lst Targ_FindList __P((Lst, int));
Boolean Targ_Ignore __P((GNode *));
Boolean Targ_Silent __P((GNode *));
Boolean Targ_Precious __P((GNode *));
void Targ_SetMain __P((GNode *));
int Targ_PrintCmd __P((ClientData, ClientData));
char *Targ_FmtTime __P((time_t));
void Targ_PrintType __P((int));
void Targ_PrintGraph __P((int));

/* var.c */
void Var_Delete __P((char *, GNode *));
void Var_Set __P((char *, char *, GNode *));
void Var_Append __P((char *, char *, GNode *));
Boolean Var_Exists __P((char *, GNode *));
char *Var_Value __P((char *, GNode *, char **));
char *Var_Parse __P((char *, GNode *, Boolean, int *, Boolean *));
char *Var_Subst __P((char *, char *, GNode *, Boolean));
char *Var_GetTail __P((char *));
char *Var_GetHead __P((char *));
void Var_Init __P((void));
void Var_End __P((void));
void Var_Dump __P((GNode *));