From 999623e9736d21177d1f437679b334e0347a6e0f Mon Sep 17 00:00:00 2001
From: Matt Kraai <kraai@debian.org>
Date: Mon, 29 Oct 2001 15:49:03 +0000
Subject: [PATCH] Use extended regular expressions when invoked as egrep (noted
 and initial patch by Charles Steinkuehler).

---
 findutils/config.in | 3 +++
 findutils/grep.c    | 5 +++++
 include/applets.h   | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/findutils/config.in b/findutils/config.in
index 8e41bd50c..21e368047 100644
--- a/findutils/config.in
+++ b/findutils/config.in
@@ -8,6 +8,9 @@ comment 'Finding Utilities'
 
 bool 'find'	    CONFIG_FIND
 bool 'grep'	    CONFIG_GREP
+if [ "$CONFIG_GREP" = "y" ] ; then
+	bool ' egrep alias' CONFIG_FEATURE_GREP_EGREP_ALIAS
+fi
 bool 'which'	    CONFIG_WHICH
 bool 'xargs'	    CONFIG_XARGS
 endmenu
diff --git a/findutils/grep.c b/findutils/grep.c
index a97a8bbb7..7cd8196fd 100644
--- a/findutils/grep.c
+++ b/findutils/grep.c
@@ -243,6 +243,11 @@ extern int grep_main(int argc, char **argv)
 		perror_msg_and_die("atexit");
 #endif
 
+#ifdef CONFIG_FEATURE_GREP_EGREP_ALIAS
+	if (strcmp (basename (argv[0]), "egrep") == 0)
+		reflags |= REG_ICASE;
+#endif
+
 	/* do normal option parsing */
 	while ((opt = getopt(argc, argv, "iHhlnqvsce:f:"
 #ifdef CONFIG_FEATURE_GREP_CONTEXT
diff --git a/include/applets.h b/include/applets.h
index 9a7e394b6..effbb5233 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -149,7 +149,7 @@
 #ifdef CONFIG_ECHO
 	APPLET(echo, echo_main, _BB_DIR_BIN)
 #endif
-#if defined(CONFIG_FEATURE_GREP_EGREP_ALIAS) && defined(CONFIG_GREP)
+#if defined(CONFIG_FEATURE_GREP_EGREP_ALIAS)
 	APPLET_NOUSAGE("egrep", grep_main, _BB_DIR_BIN)
 #endif
 #ifdef CONFIG_ENV