Improve readability of enum members

The 'left shift from one' notation of power of two integers is more
expressive than the result.

Signed-off-by: Alexander Huemer <alexander.huemer@xx.vu>
Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>

st.c

@@ -88,17 +88,17 @@ char *argv0;
 
 enum glyph_attribute {
 	ATTR_NULL      = 0,
-	ATTR_BOLD      = 1,
-	ATTR_FAINT     = 2,
-	ATTR_ITALIC    = 4,
-	ATTR_UNDERLINE = 8,
-	ATTR_BLINK     = 16,
-	ATTR_REVERSE   = 32,
-	ATTR_INVISIBLE = 64,
-	ATTR_STRUCK    = 128,
-	ATTR_WRAP      = 256,
-	ATTR_WIDE      = 512,
-	ATTR_WDUMMY    = 1024,
+	ATTR_BOLD      = 1 << 0,
+	ATTR_FAINT     = 1 << 1,
+	ATTR_ITALIC    = 1 << 2,
+	ATTR_UNDERLINE = 1 << 3,
+	ATTR_BLINK     = 1 << 4,
+	ATTR_REVERSE   = 1 << 5,
+	ATTR_INVISIBLE = 1 << 6,
+	ATTR_STRUCK    = 1 << 7,
+	ATTR_WRAP      = 1 << 8,
+	ATTR_WIDE      = 1 << 9,
+	ATTR_WDUMMY    = 1 << 10,
 };
 
 enum cursor_movement {
@@ -113,27 +113,27 @@ enum cursor_state {
 };
 
 enum term_mode {
-	MODE_WRAP        = 1,
-	MODE_INSERT      = 2,
-	MODE_APPKEYPAD   = 4,
-	MODE_ALTSCREEN   = 8,
-	MODE_CRLF        = 16,
-	MODE_MOUSEBTN    = 32,
-	MODE_MOUSEMOTION = 64,
-	MODE_REVERSE     = 128,
-	MODE_KBDLOCK     = 256,
-	MODE_HIDE        = 512,
-	MODE_ECHO        = 1024,
-	MODE_APPCURSOR   = 2048,
-	MODE_MOUSESGR    = 4096,
-	MODE_8BIT        = 8192,
-	MODE_BLINK       = 16384,
-	MODE_FBLINK      = 32768,
-	MODE_FOCUS       = 65536,
-	MODE_MOUSEX10    = 131072,
-	MODE_MOUSEMANY   = 262144,
-	MODE_BRCKTPASTE  = 524288,
-	MODE_PRINT       = 1048576,
+	MODE_WRAP        = 1 << 0,
+	MODE_INSERT      = 1 << 1,
+	MODE_APPKEYPAD   = 1 << 2,
+	MODE_ALTSCREEN   = 1 << 3,
+	MODE_CRLF        = 1 << 4,
+	MODE_MOUSEBTN    = 1 << 5,
+	MODE_MOUSEMOTION = 1 << 6,
+	MODE_REVERSE     = 1 << 7,
+	MODE_KBDLOCK     = 1 << 8,
+	MODE_HIDE        = 1 << 9,
+	MODE_ECHO        = 1 << 10,
+	MODE_APPCURSOR   = 1 << 11,
+	MODE_MOUSESGR    = 1 << 12,
+	MODE_8BIT        = 1 << 13,
+	MODE_BLINK       = 1 << 14,
+	MODE_FBLINK      = 1 << 15,
+	MODE_FOCUS       = 1 << 16,
+	MODE_MOUSEX10    = 1 << 17,
+	MODE_MOUSEMANY   = 1 << 18,
+	MODE_BRCKTPASTE  = 1 << 19,
+	MODE_PRINT       = 1 << 20,
 	MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
 	                  |MODE_MOUSEMANY,
 };