minor changes to make it a bit nicer, also not sure how else set gnu11

bin/9c

@@ -24,6 +24,7 @@ usegcc()
 		-fno-omit-frame-pointer \
 		-fsigned-char \
 		-fcommon \
+        --std=gnu11 \
 	"
 	# want to put -fno-optimize-sibling-calls here but
 	# that option only works with gcc3+ it seems
@@ -56,7 +57,7 @@ quiet()
 	ignore=$ignore'|expanded from macro'
 
 	grep -v '__p9l_autolib_' "$1" |
-	egrep -v "$ignore" |
+	grep -E -v "$ignore" |
 	sed 's/ .first use in this function.$//; s/\"\([^\"][^\"]*\)\", line \([0-9][0-9]*\)/\1:\2/g' |
 	$(which uniq) 1>&2  # avoid built-in uniq on SunOS
 }

bin/9l

@@ -146,7 +146,7 @@ then
 					grep '__p9l_autolib_[a-zA-Z0-9+-]*' |
 					sed 's/.*__p9l_autolib_//; s/:.*//' |
 					sort -u |
-					egrep -v '^(thread|draw)$'
+					grep -E -v '^(thread|draw)$'
 				`
 				a="$a $b"
 			done
@@ -337,7 +337,7 @@ quiet()
 	ignore=$ignore'|ld: warning: ignoring duplicate libraries:'
 
 	sed 's/.*: In function `[^:]*: *//' "$1" |
-	egrep -v "$ignore"
+	grep -E -v "$ignore"
 }
 
 # Must use temp file to avoid pipe; pipe loses status.