2 files changed, 62 insertions, 0 deletions
diff --git a/include/strings.h b/include/strings.h
index 15b8b1a..2044fa6 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -95,6 +95,25 @@ int strncasecmp(const char*, const char*, size_t)
   __GCC_ONLY(__attribute__((warn_unused_result, nonnull)));
 
 
+/**
+ * This function is identical to `strchr`.
+ * 
+ * This is a deprecated BSD extension.
+ */
+char* index(const char*, int)
+  __deprecated("Use 'strchr' instead.")
+  __GCC_ONLY(__attribute__((warn_unused_result, nonnull)));
+
+/**
+ * This function is identical to `strrchr`.
+ * 
+ * This is a deprecated BSD extension.
+ */
+char* rindex(const char*, int)
+  __deprecated("Use 'strrchr' instead.")
+  __GCC_ONLY(__attribute__((warn_unused_result, nonnull)));
+
+
 
 #endif
 
diff --git a/src/strings/index.c b/src/strings/index.c
new file mode 100644
index 0000000..82126f5
--- /dev/null
+++ b/src/strings/index.c
@@ -0,0 +1,43 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * 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 3 of the License, 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.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <strings.h>
+#include <string.h>
+
+
+
+/**
+ * This function is identical to `strchr`.
+ * 
+ * This is a deprecated BSD extension.
+ */
+char* index(const char* string, int c)
+{
+  return strchr(string, c);
+}
+
+
+/**
+ * This function is identical to `strrchr`.
+ * 
+ * This is a deprecated BSD extension.
+ */
+char* rindex(const char* string, int c)
+{
+  return strrchr(string, c);
+}
+