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diff --git a/str_util.h b/str_util.h
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+/* str_utils.h - the itsy package management system
+
+   Carl D. Worth
+
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#ifndef STR_UTILS_H
+#define STR_UTILS_H
+
+int str_starts_with(const char *str, const char *prefix);
+int str_ends_with(const char *str, const char *suffix);
+int str_chomp(char *str);
+int str_tolower(char *str);
+int str_toupper(char *str);
+char *str_dup_safe(const char *str);
+
+#endif