Patch by Rob Landley, work in progress update, fixes lots of bugs,

introduces a few others (but they are being worked on)

editors/Config.in

@@ -33,28 +33,6 @@ config CONFIG_SED
 	  sed is used to perform text transformations on a file
 	  or input from a pipeline.
 
-config CONFIG_FEATURE_SED_EMBEDED_NEWLINE
-	bool " Embeded newline (EXPERIMENTAL)"
-	default n
-	depends on CONFIG_SED
-	help
-	  This is a hack to allow matching of '\n' in regular expressions.
-	  It works by translating '\n' to "\n" and back.
-	  It may introduce unexpected results if you use "\n" in your text.
-
-config CONFIG_FEATURE_SED_GNU_COMPATABILITY
-	bool " Behave consistent with GNU sed"
-	default y
-	depends on CONFIG_SED
-	help
-	  Where GNU sed doesnt follow the posix standard, do as GNU sed does.
-	  Current difference are in
-	    - N command with odd number of lines (see GNU sed info page)
-	    - Blanks before substitution flags eg.
-	        GNU sed interprets 's/a/b/ g' as 's/a/b/g'
-		Standard says 's/a/b/ g' should be 's/a/b/;g'
-	    - GNU sed allows blanks between a '!' and the function.
-
 config CONFIG_VI
 	bool "vi"
 	default n

include/libbb.h

@@ -28,6 +28,7 @@
 #include <stdarg.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <regex.h>
 #include <termios.h>
 
 #include <netdb.h>
@@ -468,5 +469,5 @@ extern void print_login_prompt(void);
 extern void vfork_daemon_rexec(int argc, char **argv, char *foreground_opt);
 extern void get_terminal_width_height(int fd, int *width, int *height);
 extern unsigned long get_ug_id(const char *s, long (*my_getxxnam)(const char *));
-
+extern void xregcomp(regex_t *preg, const char *regex, int cflags);
 #endif /* __LIBCONFIG_H__ */