5 files changed, 48 insertions, 4 deletions
diff --git a/lib/aec/aec.c b/lib/aec/aec.c
index d38e8d1..92a1f08 100644
--- a/lib/aec/aec.c
+++ b/lib/aec/aec.c
@@ -12,6 +12,23 @@ void sgr(const char *attrs)
 }
 
 
+void foreground(const char *code)
+{
+	csi();
+	wstd("3");
+	wstd(code);
+	wstd("m");
+}
+
+
+void background(const char *code)
+{
+	csi();
+	wstd("4");
+	wstd(code);
+	wstd("m");
+}
+
 #ifdef AEC_UNIT_TEST
 
 int main() {
diff --git a/lib/aec/aec.h b/lib/aec/aec.h
index f304175..70c2706 100644
--- a/lib/aec/aec.h
+++ b/lib/aec/aec.h
@@ -1,6 +1,8 @@
 #ifndef AEC_H
 #define AEC_H
 
+#include "../sys/sizes.h"
+
 #define SGR_RESET            "0"
 #define SGR_BOLD             "1"
 #define SGR_FAINT            "2"
@@ -24,4 +26,16 @@
 
 void sgr(const char *attrs);
 
+#define COLOR_BLACK          "0"
+#define COLOR_RED            "1"
+#define COLOR_GREEN          "2"
+#define COLOR_YELLOW         "3"
+#define COLOR_BLUE           "4"
+#define COLOR_PINK           "5"
+#define COLOR_CYAN           "6"
+#define COLOR_WHITE          "7"
+
+void foreground(const char *code);
+void background(const char *code);
+
 #endif
diff --git a/lib/io/Makefile b/lib/io/Makefile
index e60a656..73aa785 100644
--- a/lib/io/Makefile
+++ b/lib/io/Makefile
@@ -1,3 +1,3 @@
 unit_test:
-	gcc io.c ../cstr/cstr.c ../sys/start.S -o test -static -nostdlib -fno-stack-protector -Wno-implicit-function-declaration -g
+	gcc io.c ../aec/aec.c ../cstr/cstr.c ../env/env.c ../sys/start.S -o test -static -nostdlib -fno-stack-protector -Wno-implicit-function-declaration -DIO_LIB_UNIT_TEST -g
 	./test
diff --git a/lib/io/io.c b/lib/io/io.c
index 160b4cb..3b0ea96 100644
--- a/lib/io/io.c
+++ b/lib/io/io.c
@@ -1,6 +1,7 @@
 #include "io.h"
 
 #include "../cstr/cstr.h"
+#include "../aec/aec.h"
 
 void __wstdn(const char *buf, u64 n)
 {
@@ -33,7 +34,20 @@ void wstdf__(const char *buf, const void **args)
 				case '%': __wstdn("%", 1); break;
 				case 's':
 					__wstdn(((const char **)args)[0], cstr_length(((const char**)args)[0]));
-					++args; break;
+					++args;
+					break;
+				case 'S':
+					sgr(((const char **)args)[0]);
+					++args;
+					break;
+				case 'F':
+					foreground(((const char **)args)[0]);
+					++args;
+					break;
+				case 'B':
+					background(((const char **)args)[0]);
+					++args;
+					break;
 			}
 
 			start = buf + 1;
@@ -46,7 +60,6 @@ void wstdf__(const char *buf, const void **args)
 
 #ifdef IO_LIB_UNIT_TEST
 int main() {
-	void *args[] = { "hallo", "welt" };
-	wstdf__("%s %s\n", args);
+	wstdf("%s %S%F%s%S\n", "hallo", SGR_UNDERLINE, COLOR_RED, "welt", SGR_RESET);
 }
 #endif
diff --git a/lib/io/test b/lib/io/test
index 560b047..b2a3047 100755
--- a/lib/io/test
+++ b/lib/io/test