commentary

1 files changed, 11 insertions, 11 deletions

diff --git a/uxd.c b/uxd.c
index 80bf910..a11347f 100644
--- a/uxd.c
+++ b/uxd.c
@@ -54,22 +54,22 @@ extern int my_optind;
 /* maximum number of arguments, including environment and argv. */
 #define MAX_ARGS 64
 
-/* ANSI colors */
-#define BLACK  0 /* don't use (could be the background color) */
+/* ANSI colors. */
+#define BLACK  0 /* don't use by default (could be the background color) */
 #define RED    1
 #define GREEN  2
 #define YELLOW 3
-#define BLUE   4 /* don't use (hard to read on many terminals) */
+#define BLUE   4 /* don't use by default (hard to read on many terminals) */
 #define PURPLE 5
 #define CYAN   6
-#define WHITE  7 /* don't use (could be the background color) */
-
-/* highlight types. */
-#define HL_NORMAL 0
-#define HL_NORM_INV 1
-#define HL_SPECIAL 2
-#define HL_SPEC_INV 3
-#define HL_BAD 4
+#define WHITE  7 /* don't use by default (could be the background color) */
+
+/* highlight types. classify_char() "returns" one of these. */
+#define HL_NORMAL 0    /* printable ASCII (0x20-0x7e) */
+#define HL_NORM_INV 1  /* printable multibyte (unless -r) */
+#define HL_SPECIAL 2   /* unprintable ASCII (0x00-0x1f, 0x7f) */
+#define HL_SPEC_INV 3  /* BOM, surrogates if -p, etc */
+#define HL_BAD 4       /* invalid seqs, or bad Unicode */
 
 /* terminal codes for mono highlighting. */
 #define MONO_NORMAL 0