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diff --git a/usr.bin/diff/diff.h b/usr.bin/diff/diff.h
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+
+
+/*ROR
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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. 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.
+ *
+ * @(#)diff.h 8.1 (Berkeley) 6/6/93
+ */
+
+#include <sys/types.h>
+#include <regex.h>
+
+/*
+ * Output format options
+ */
+#define D_NORMAL 0 /* Normal output */
+#define D_EDIT -1 /* Editor script out */
+#define D_REVERSE 1 /* Reverse editor script */
+#define D_CONTEXT 2 /* Diff with context */
+#define D_UNIFIED 3 /* Unified context diff */
+#define D_IFDEF 4 /* Diff with merged #ifdef's */
+#define D_NREVERSE 5 /* Reverse ed script with numbered
+ lines and no trailing . */
+#define D_BRIEF 6 /* Say if the files differ */
+
+/*
+ * Output flags
+ */
+#define D_HEADER 0x001 /* Print a header/footer between files */
+#define D_EMPTY1 0x002 /* Treat first file as empty (/dev/null) */
+#define D_EMPTY2 0x004 /* Treat second file as empty (/dev/null) */
+
+/*
+ * Command line flags
+ */
+#define D_FORCEASCII 0x008 /* Treat file as ascii regardless of content */
+#define D_FOLDBLANKS 0x010 /* Treat all white space as equal */
+#define D_MINIMAL 0x020 /* Make diff as small as possible */
+#define D_IGNORECASE 0x040 /* Case-insensitive matching */
+#define D_PROTOTYPE 0x080 /* Display C function prototype */
+#define D_EXPANDTABS 0x100 /* Expand tabs to spaces */
+#define D_IGNOREBLANKS 0x200 /* Ignore white space changes */
+
+/*
+ * Status values for print_status() and diffreg() return values
+ */
+#define D_SAME 0 /* Files are the same */
+#define D_DIFFER 1 /* Files are different */
+#define D_BINARY 2 /* Binary files are different */
+#define D_MISMATCH1 3 /* path1 was a dir, path2 a file */
+#define D_MISMATCH2 4 /* path1 was a file, path2 a dir */
+#define D_SKIPPED1 5 /* path1 was a special file */
+#define D_SKIPPED2 6 /* path2 was a special file */
+
+struct excludes {
+ char *pattern;
+ struct excludes *next;
+};
+
+extern int Nflag, Pflag, rflag, sflag, Tflag;
+extern int diff_format, diff_context, status;
+extern char *start, *ifdefname, *diffargs, *label[2], *ignore_pats;
+extern struct stat stb1, stb2;
+extern struct excludes *excludes_list;
+extern regex_t ignore_re;
+
+char *splice(char *, char *);
+int diffreg(char *, char *, int);
+int easprintf(char **, const char *, ...);
+void *emalloc(size_t);
+void *erealloc(void *, size_t);
+void diffdir(char *, char *, int);
+void print_only(const char *, size_t, const char *);
+void print_status(int, char *, char *, char *);