ui: refactor syntax style definitions

Styles can now be specified as strings which will make them
easier to specify from outside the editor.

The following style attributes can be given in a comma separated
list:

 bold
 italics
 underlined
 fore:color
 back:color

where color is either a hex value of the form #aabbcc or one
of the predefined colors:

 black
 red
 green
 yellow
 blue
 magenta
 cyan
 white

1 files changed, 410 insertions, 12 deletions

diff --git a/ui-curses.c b/ui-curses.c
index 999da1b..7e74919 100644
--- a/ui-curses.c
+++ b/ui-curses.c
@@ -1,6 +1,14 @@
+/* parts of the color handling code originates from tmux/colour.c and is
+ *
+ * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ */
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
+#include <strings.h>
+#include <limits.h>
+#include <ctype.h>
 #include <signal.h>
 #include <locale.h>
 #include <poll.h>
@@ -80,6 +88,7 @@ struct UiCursesWin {
 	int sidebar_width;        /* width of the sidebar showing line numbers etc. */
 	UiCursesWin *next, *prev; /* pointers to neighbouring windows */
 	enum UiOption options;    /* display settings for this window */
+	attr_t styles[UI_STYLES_MAX];
 };
 
 static volatile sig_atomic_t need_resize; /* TODO */
@@ -88,7 +97,362 @@ static void sigwinch_handler(int sig) {
 	need_resize = true;
 }
 
-static unsigned int color_hash(short fg, short bg) {
+typedef struct {
+	unsigned char i;
+	unsigned char r;
+	unsigned char g;
+	unsigned char b;
+} Color;
+
+static int color_compare(const void *lhs0, const void *rhs0) {
+	const Color *lhs = lhs0, *rhs = rhs0;
+
+	if (lhs->r < rhs->r)
+		return -1;
+	if (lhs->r > rhs->r)
+		return 1;
+
+	if (lhs->g < rhs->g)
+		return -1;
+	if (lhs->g > rhs->g)
+		return 1;
+
+	if (lhs->b < rhs->b)
+		return -1;
+	if (lhs->b > rhs->b)
+		return 1;
+
+	return 0;
+}
+
+/* Work out the nearest color from the 256 color set. */
+static int color_find_rgb(unsigned char r, unsigned char g, unsigned char b)
+{
+	static const Color color_from_256[] = {
+		{   0, 0x00, 0x00, 0x00 }, {   1, 0x00, 0x00, 0x5f },
+		{   2, 0x00, 0x00, 0x87 }, {   3, 0x00, 0x00, 0xaf },
+		{   4, 0x00, 0x00, 0xd7 }, {   5, 0x00, 0x00, 0xff },
+		{   6, 0x00, 0x5f, 0x00 }, {   7, 0x00, 0x5f, 0x5f },
+		{   8, 0x00, 0x5f, 0x87 }, {   9, 0x00, 0x5f, 0xaf },
+		{  10, 0x00, 0x5f, 0xd7 }, {  11, 0x00, 0x5f, 0xff },
+		{  12, 0x00, 0x87, 0x00 }, {  13, 0x00, 0x87, 0x5f },
+		{  14, 0x00, 0x87, 0x87 }, {  15, 0x00, 0x87, 0xaf },
+		{  16, 0x00, 0x87, 0xd7 }, {  17, 0x00, 0x87, 0xff },
+		{  18, 0x00, 0xaf, 0x00 }, {  19, 0x00, 0xaf, 0x5f },
+		{  20, 0x00, 0xaf, 0x87 }, {  21, 0x00, 0xaf, 0xaf },
+		{  22, 0x00, 0xaf, 0xd7 }, {  23, 0x00, 0xaf, 0xff },
+		{  24, 0x00, 0xd7, 0x00 }, {  25, 0x00, 0xd7, 0x5f },
+		{  26, 0x00, 0xd7, 0x87 }, {  27, 0x00, 0xd7, 0xaf },
+		{  28, 0x00, 0xd7, 0xd7 }, {  29, 0x00, 0xd7, 0xff },
+		{  30, 0x00, 0xff, 0x00 }, {  31, 0x00, 0xff, 0x5f },
+		{  32, 0x00, 0xff, 0x87 }, {  33, 0x00, 0xff, 0xaf },
+		{  34, 0x00, 0xff, 0xd7 }, {  35, 0x00, 0xff, 0xff },
+		{  36, 0x5f, 0x00, 0x00 }, {  37, 0x5f, 0x00, 0x5f },
+		{  38, 0x5f, 0x00, 0x87 }, {  39, 0x5f, 0x00, 0xaf },
+		{  40, 0x5f, 0x00, 0xd7 }, {  41, 0x5f, 0x00, 0xff },
+		{  42, 0x5f, 0x5f, 0x00 }, {  43, 0x5f, 0x5f, 0x5f },
+		{  44, 0x5f, 0x5f, 0x87 }, {  45, 0x5f, 0x5f, 0xaf },
+		{  46, 0x5f, 0x5f, 0xd7 }, {  47, 0x5f, 0x5f, 0xff },
+		{  48, 0x5f, 0x87, 0x00 }, {  49, 0x5f, 0x87, 0x5f },
+		{  50, 0x5f, 0x87, 0x87 }, {  51, 0x5f, 0x87, 0xaf },
+		{  52, 0x5f, 0x87, 0xd7 }, {  53, 0x5f, 0x87, 0xff },
+		{  54, 0x5f, 0xaf, 0x00 }, {  55, 0x5f, 0xaf, 0x5f },
+		{  56, 0x5f, 0xaf, 0x87 }, {  57, 0x5f, 0xaf, 0xaf },
+		{  58, 0x5f, 0xaf, 0xd7 }, {  59, 0x5f, 0xaf, 0xff },
+		{  60, 0x5f, 0xd7, 0x00 }, {  61, 0x5f, 0xd7, 0x5f },
+		{  62, 0x5f, 0xd7, 0x87 }, {  63, 0x5f, 0xd7, 0xaf },
+		{  64, 0x5f, 0xd7, 0xd7 }, {  65, 0x5f, 0xd7, 0xff },
+		{  66, 0x5f, 0xff, 0x00 }, {  67, 0x5f, 0xff, 0x5f },
+		{  68, 0x5f, 0xff, 0x87 }, {  69, 0x5f, 0xff, 0xaf },
+		{  70, 0x5f, 0xff, 0xd7 }, {  71, 0x5f, 0xff, 0xff },
+		{  72, 0x87, 0x00, 0x00 }, {  73, 0x87, 0x00, 0x5f },
+		{  74, 0x87, 0x00, 0x87 }, {  75, 0x87, 0x00, 0xaf },
+		{  76, 0x87, 0x00, 0xd7 }, {  77, 0x87, 0x00, 0xff },
+		{  78, 0x87, 0x5f, 0x00 }, {  79, 0x87, 0x5f, 0x5f },
+		{  80, 0x87, 0x5f, 0x87 }, {  81, 0x87, 0x5f, 0xaf },
+		{  82, 0x87, 0x5f, 0xd7 }, {  83, 0x87, 0x5f, 0xff },
+		{  84, 0x87, 0x87, 0x00 }, {  85, 0x87, 0x87, 0x5f },
+		{  86, 0x87, 0x87, 0x87 }, {  87, 0x87, 0x87, 0xaf },
+		{  88, 0x87, 0x87, 0xd7 }, {  89, 0x87, 0x87, 0xff },
+		{  90, 0x87, 0xaf, 0x00 }, {  91, 0x87, 0xaf, 0x5f },
+		{  92, 0x87, 0xaf, 0x87 }, {  93, 0x87, 0xaf, 0xaf },
+		{  94, 0x87, 0xaf, 0xd7 }, {  95, 0x87, 0xaf, 0xff },
+		{  96, 0x87, 0xd7, 0x00 }, {  97, 0x87, 0xd7, 0x5f },
+		{  98, 0x87, 0xd7, 0x87 }, {  99, 0x87, 0xd7, 0xaf },
+		{ 100, 0x87, 0xd7, 0xd7 }, { 101, 0x87, 0xd7, 0xff },
+		{ 102, 0x87, 0xff, 0x00 }, { 103, 0x87, 0xff, 0x5f },
+		{ 104, 0x87, 0xff, 0x87 }, { 105, 0x87, 0xff, 0xaf },
+		{ 106, 0x87, 0xff, 0xd7 }, { 107, 0x87, 0xff, 0xff },
+		{ 108, 0xaf, 0x00, 0x00 }, { 109, 0xaf, 0x00, 0x5f },
+		{ 110, 0xaf, 0x00, 0x87 }, { 111, 0xaf, 0x00, 0xaf },
+		{ 112, 0xaf, 0x00, 0xd7 }, { 113, 0xaf, 0x00, 0xff },
+		{ 114, 0xaf, 0x5f, 0x00 }, { 115, 0xaf, 0x5f, 0x5f },
+		{ 116, 0xaf, 0x5f, 0x87 }, { 117, 0xaf, 0x5f, 0xaf },
+		{ 118, 0xaf, 0x5f, 0xd7 }, { 119, 0xaf, 0x5f, 0xff },
+		{ 120, 0xaf, 0x87, 0x00 }, { 121, 0xaf, 0x87, 0x5f },
+		{ 122, 0xaf, 0x87, 0x87 }, { 123, 0xaf, 0x87, 0xaf },
+		{ 124, 0xaf, 0x87, 0xd7 }, { 125, 0xaf, 0x87, 0xff },
+		{ 126, 0xaf, 0xaf, 0x00 }, { 127, 0xaf, 0xaf, 0x5f },
+		{ 128, 0xaf, 0xaf, 0x87 }, { 129, 0xaf, 0xaf, 0xaf },
+		{ 130, 0xaf, 0xaf, 0xd7 }, { 131, 0xaf, 0xaf, 0xff },
+		{ 132, 0xaf, 0xd7, 0x00 }, { 133, 0xaf, 0xd7, 0x5f },
+		{ 134, 0xaf, 0xd7, 0x87 }, { 135, 0xaf, 0xd7, 0xaf },
+		{ 136, 0xaf, 0xd7, 0xd7 }, { 137, 0xaf, 0xd7, 0xff },
+		{ 138, 0xaf, 0xff, 0x00 }, { 139, 0xaf, 0xff, 0x5f },
+		{ 140, 0xaf, 0xff, 0x87 }, { 141, 0xaf, 0xff, 0xaf },
+		{ 142, 0xaf, 0xff, 0xd7 }, { 143, 0xaf, 0xff, 0xff },
+		{ 144, 0xd7, 0x00, 0x00 }, { 145, 0xd7, 0x00, 0x5f },
+		{ 146, 0xd7, 0x00, 0x87 }, { 147, 0xd7, 0x00, 0xaf },
+		{ 148, 0xd7, 0x00, 0xd7 }, { 149, 0xd7, 0x00, 0xff },
+		{ 150, 0xd7, 0x5f, 0x00 }, { 151, 0xd7, 0x5f, 0x5f },
+		{ 152, 0xd7, 0x5f, 0x87 }, { 153, 0xd7, 0x5f, 0xaf },
+		{ 154, 0xd7, 0x5f, 0xd7 }, { 155, 0xd7, 0x5f, 0xff },
+		{ 156, 0xd7, 0x87, 0x00 }, { 157, 0xd7, 0x87, 0x5f },
+		{ 158, 0xd7, 0x87, 0x87 }, { 159, 0xd7, 0x87, 0xaf },
+		{ 160, 0xd7, 0x87, 0xd7 }, { 161, 0xd7, 0x87, 0xff },
+		{ 162, 0xd7, 0xaf, 0x00 }, { 163, 0xd7, 0xaf, 0x5f },
+		{ 164, 0xd7, 0xaf, 0x87 }, { 165, 0xd7, 0xaf, 0xaf },
+		{ 166, 0xd7, 0xaf, 0xd7 }, { 167, 0xd7, 0xaf, 0xff },
+		{ 168, 0xd7, 0xd7, 0x00 }, { 169, 0xd7, 0xd7, 0x5f },
+		{ 170, 0xd7, 0xd7, 0x87 }, { 171, 0xd7, 0xd7, 0xaf },
+		{ 172, 0xd7, 0xd7, 0xd7 }, { 173, 0xd7, 0xd7, 0xff },
+		{ 174, 0xd7, 0xff, 0x00 }, { 175, 0xd7, 0xff, 0x5f },
+		{ 176, 0xd7, 0xff, 0x87 }, { 177, 0xd7, 0xff, 0xaf },
+		{ 178, 0xd7, 0xff, 0xd7 }, { 179, 0xd7, 0xff, 0xff },
+		{ 180, 0xff, 0x00, 0x00 }, { 181, 0xff, 0x00, 0x5f },
+		{ 182, 0xff, 0x00, 0x87 }, { 183, 0xff, 0x00, 0xaf },
+		{ 184, 0xff, 0x00, 0xd7 }, { 185, 0xff, 0x00, 0xff },
+		{ 186, 0xff, 0x5f, 0x00 }, { 187, 0xff, 0x5f, 0x5f },
+		{ 188, 0xff, 0x5f, 0x87 }, { 189, 0xff, 0x5f, 0xaf },
+		{ 190, 0xff, 0x5f, 0xd7 }, { 191, 0xff, 0x5f, 0xff },
+		{ 192, 0xff, 0x87, 0x00 }, { 193, 0xff, 0x87, 0x5f },
+		{ 194, 0xff, 0x87, 0x87 }, { 195, 0xff, 0x87, 0xaf },
+		{ 196, 0xff, 0x87, 0xd7 }, { 197, 0xff, 0x87, 0xff },
+		{ 198, 0xff, 0xaf, 0x00 }, { 199, 0xff, 0xaf, 0x5f },
+		{ 200, 0xff, 0xaf, 0x87 }, { 201, 0xff, 0xaf, 0xaf },
+		{ 202, 0xff, 0xaf, 0xd7 }, { 203, 0xff, 0xaf, 0xff },
+		{ 204, 0xff, 0xd7, 0x00 }, { 205, 0xff, 0xd7, 0x5f },
+		{ 206, 0xff, 0xd7, 0x87 }, { 207, 0xff, 0xd7, 0xaf },
+		{ 208, 0xff, 0xd7, 0xd7 }, { 209, 0xff, 0xd7, 0xff },
+		{ 210, 0xff, 0xff, 0x00 }, { 211, 0xff, 0xff, 0x5f },
+		{ 212, 0xff, 0xff, 0x87 }, { 213, 0xff, 0xff, 0xaf },
+		{ 214, 0xff, 0xff, 0xd7 }, { 215, 0xff, 0xff, 0xff },
+		{ 216, 0x08, 0x08, 0x08 }, { 217, 0x12, 0x12, 0x12 },
+		{ 218, 0x1c, 0x1c, 0x1c }, { 219, 0x26, 0x26, 0x26 },
+		{ 220, 0x30, 0x30, 0x30 }, { 221, 0x3a, 0x3a, 0x3a },
+		{ 222, 0x44, 0x44, 0x44 }, { 223, 0x4e, 0x4e, 0x4e },
+		{ 224, 0x58, 0x58, 0x58 }, { 225, 0x62, 0x62, 0x62 },
+		{ 226, 0x6c, 0x6c, 0x6c }, { 227, 0x76, 0x76, 0x76 },
+		{ 228, 0x80, 0x80, 0x80 }, { 229, 0x8a, 0x8a, 0x8a },
+		{ 230, 0x94, 0x94, 0x94 }, { 231, 0x9e, 0x9e, 0x9e },
+		{ 232, 0xa8, 0xa8, 0xa8 }, { 233, 0xb2, 0xb2, 0xb2 },
+		{ 234, 0xbc, 0xbc, 0xbc }, { 235, 0xc6, 0xc6, 0xc6 },
+		{ 236, 0xd0, 0xd0, 0xd0 }, { 237, 0xda, 0xda, 0xda },
+		{ 238, 0xe4, 0xe4, 0xe4 }, { 239, 0xee, 0xee, 0xee },
+	};
+
+	static const Color color_to_256[] = {
+		{   0, 0x00, 0x00, 0x00 }, {   1, 0x00, 0x00, 0x5f },
+		{   2, 0x00, 0x00, 0x87 }, {   3, 0x00, 0x00, 0xaf },
+		{   4, 0x00, 0x00, 0xd7 }, {   5, 0x00, 0x00, 0xff },
+		{   6, 0x00, 0x5f, 0x00 }, {   7, 0x00, 0x5f, 0x5f },
+		{   8, 0x00, 0x5f, 0x87 }, {   9, 0x00, 0x5f, 0xaf },
+		{  10, 0x00, 0x5f, 0xd7 }, {  11, 0x00, 0x5f, 0xff },
+		{  12, 0x00, 0x87, 0x00 }, {  13, 0x00, 0x87, 0x5f },
+		{  14, 0x00, 0x87, 0x87 }, {  15, 0x00, 0x87, 0xaf },
+		{  16, 0x00, 0x87, 0xd7 }, {  17, 0x00, 0x87, 0xff },
+		{  18, 0x00, 0xaf, 0x00 }, {  19, 0x00, 0xaf, 0x5f },
+		{  20, 0x00, 0xaf, 0x87 }, {  21, 0x00, 0xaf, 0xaf },
+		{  22, 0x00, 0xaf, 0xd7 }, {  23, 0x00, 0xaf, 0xff },
+		{  24, 0x00, 0xd7, 0x00 }, {  25, 0x00, 0xd7, 0x5f },
+		{  26, 0x00, 0xd7, 0x87 }, {  27, 0x00, 0xd7, 0xaf },
+		{  28, 0x00, 0xd7, 0xd7 }, {  29, 0x00, 0xd7, 0xff },
+		{  30, 0x00, 0xff, 0x00 }, {  31, 0x00, 0xff, 0x5f },
+		{  32, 0x00, 0xff, 0x87 }, {  33, 0x00, 0xff, 0xaf },
+		{  34, 0x00, 0xff, 0xd7 }, {  35, 0x00, 0xff, 0xff },
+		{ 216, 0x08, 0x08, 0x08 }, { 217, 0x12, 0x12, 0x12 },
+		{ 218, 0x1c, 0x1c, 0x1c }, { 219, 0x26, 0x26, 0x26 },
+		{ 220, 0x30, 0x30, 0x30 }, { 221, 0x3a, 0x3a, 0x3a },
+		{ 222, 0x44, 0x44, 0x44 }, { 223, 0x4e, 0x4e, 0x4e },
+		{ 224, 0x58, 0x58, 0x58 }, {  36, 0x5f, 0x00, 0x00 },
+		{  37, 0x5f, 0x00, 0x5f }, {  38, 0x5f, 0x00, 0x87 },
+		{  39, 0x5f, 0x00, 0xaf }, {  40, 0x5f, 0x00, 0xd7 },
+		{  41, 0x5f, 0x00, 0xff }, {  42, 0x5f, 0x5f, 0x00 },
+		{  43, 0x5f, 0x5f, 0x5f }, {  44, 0x5f, 0x5f, 0x87 },
+		{  45, 0x5f, 0x5f, 0xaf }, {  46, 0x5f, 0x5f, 0xd7 },
+		{  47, 0x5f, 0x5f, 0xff }, {  48, 0x5f, 0x87, 0x00 },
+		{  49, 0x5f, 0x87, 0x5f }, {  50, 0x5f, 0x87, 0x87 },
+		{  51, 0x5f, 0x87, 0xaf }, {  52, 0x5f, 0x87, 0xd7 },
+		{  53, 0x5f, 0x87, 0xff }, {  54, 0x5f, 0xaf, 0x00 },
+		{  55, 0x5f, 0xaf, 0x5f }, {  56, 0x5f, 0xaf, 0x87 },
+		{  57, 0x5f, 0xaf, 0xaf }, {  58, 0x5f, 0xaf, 0xd7 },
+		{  59, 0x5f, 0xaf, 0xff }, {  60, 0x5f, 0xd7, 0x00 },
+		{  61, 0x5f, 0xd7, 0x5f }, {  62, 0x5f, 0xd7, 0x87 },
+		{  63, 0x5f, 0xd7, 0xaf }, {  64, 0x5f, 0xd7, 0xd7 },
+		{  65, 0x5f, 0xd7, 0xff }, {  66, 0x5f, 0xff, 0x00 },
+		{  67, 0x5f, 0xff, 0x5f }, {  68, 0x5f, 0xff, 0x87 },
+		{  69, 0x5f, 0xff, 0xaf }, {  70, 0x5f, 0xff, 0xd7 },
+		{  71, 0x5f, 0xff, 0xff }, { 225, 0x62, 0x62, 0x62 },
+		{ 226, 0x6c, 0x6c, 0x6c }, { 227, 0x76, 0x76, 0x76 },
+		{ 228, 0x80, 0x80, 0x80 }, {  72, 0x87, 0x00, 0x00 },
+		{  73, 0x87, 0x00, 0x5f }, {  74, 0x87, 0x00, 0x87 },
+		{  75, 0x87, 0x00, 0xaf }, {  76, 0x87, 0x00, 0xd7 },
+		{  77, 0x87, 0x00, 0xff }, {  78, 0x87, 0x5f, 0x00 },
+		{  79, 0x87, 0x5f, 0x5f }, {  80, 0x87, 0x5f, 0x87 },
+		{  81, 0x87, 0x5f, 0xaf }, {  82, 0x87, 0x5f, 0xd7 },
+		{  83, 0x87, 0x5f, 0xff }, {  84, 0x87, 0x87, 0x00 },
+		{  85, 0x87, 0x87, 0x5f }, {  86, 0x87, 0x87, 0x87 },
+		{  87, 0x87, 0x87, 0xaf }, {  88, 0x87, 0x87, 0xd7 },
+		{  89, 0x87, 0x87, 0xff }, {  90, 0x87, 0xaf, 0x00 },
+		{  91, 0x87, 0xaf, 0x5f }, {  92, 0x87, 0xaf, 0x87 },
+		{  93, 0x87, 0xaf, 0xaf }, {  94, 0x87, 0xaf, 0xd7 },
+		{  95, 0x87, 0xaf, 0xff }, {  96, 0x87, 0xd7, 0x00 },
+		{  97, 0x87, 0xd7, 0x5f }, {  98, 0x87, 0xd7, 0x87 },
+		{  99, 0x87, 0xd7, 0xaf }, { 100, 0x87, 0xd7, 0xd7 },
+		{ 101, 0x87, 0xd7, 0xff }, { 102, 0x87, 0xff, 0x00 },
+		{ 103, 0x87, 0xff, 0x5f }, { 104, 0x87, 0xff, 0x87 },
+		{ 105, 0x87, 0xff, 0xaf }, { 106, 0x87, 0xff, 0xd7 },
+		{ 107, 0x87, 0xff, 0xff }, { 229, 0x8a, 0x8a, 0x8a },
+		{ 230, 0x94, 0x94, 0x94 }, { 231, 0x9e, 0x9e, 0x9e },
+		{ 232, 0xa8, 0xa8, 0xa8 }, { 108, 0xaf, 0x00, 0x00 },
+		{ 109, 0xaf, 0x00, 0x5f }, { 110, 0xaf, 0x00, 0x87 },
+		{ 111, 0xaf, 0x00, 0xaf }, { 112, 0xaf, 0x00, 0xd7 },
+		{ 113, 0xaf, 0x00, 0xff }, { 114, 0xaf, 0x5f, 0x00 },
+		{ 115, 0xaf, 0x5f, 0x5f }, { 116, 0xaf, 0x5f, 0x87 },
+		{ 117, 0xaf, 0x5f, 0xaf }, { 118, 0xaf, 0x5f, 0xd7 },
+		{ 119, 0xaf, 0x5f, 0xff }, { 120, 0xaf, 0x87, 0x00 },
+		{ 121, 0xaf, 0x87, 0x5f }, { 122, 0xaf, 0x87, 0x87 },
+		{ 123, 0xaf, 0x87, 0xaf }, { 124, 0xaf, 0x87, 0xd7 },
+		{ 125, 0xaf, 0x87, 0xff }, { 126, 0xaf, 0xaf, 0x00 },
+		{ 127, 0xaf, 0xaf, 0x5f }, { 128, 0xaf, 0xaf, 0x87 },
+		{ 129, 0xaf, 0xaf, 0xaf }, { 130, 0xaf, 0xaf, 0xd7 },
+		{ 131, 0xaf, 0xaf, 0xff }, { 132, 0xaf, 0xd7, 0x00 },
+		{ 133, 0xaf, 0xd7, 0x5f }, { 134, 0xaf, 0xd7, 0x87 },
+		{ 135, 0xaf, 0xd7, 0xaf }, { 136, 0xaf, 0xd7, 0xd7 },
+		{ 137, 0xaf, 0xd7, 0xff }, { 138, 0xaf, 0xff, 0x00 },
+		{ 139, 0xaf, 0xff, 0x5f }, { 140, 0xaf, 0xff, 0x87 },
+		{ 141, 0xaf, 0xff, 0xaf }, { 142, 0xaf, 0xff, 0xd7 },
+		{ 143, 0xaf, 0xff, 0xff }, { 233, 0xb2, 0xb2, 0xb2 },
+		{ 234, 0xbc, 0xbc, 0xbc }, { 235, 0xc6, 0xc6, 0xc6 },
+		{ 236, 0xd0, 0xd0, 0xd0 }, { 144, 0xd7, 0x00, 0x00 },
+		{ 145, 0xd7, 0x00, 0x5f }, { 146, 0xd7, 0x00, 0x87 },
+		{ 147, 0xd7, 0x00, 0xaf }, { 148, 0xd7, 0x00, 0xd7 },
+		{ 149, 0xd7, 0x00, 0xff }, { 150, 0xd7, 0x5f, 0x00 },
+		{ 151, 0xd7, 0x5f, 0x5f }, { 152, 0xd7, 0x5f, 0x87 },
+		{ 153, 0xd7, 0x5f, 0xaf }, { 154, 0xd7, 0x5f, 0xd7 },
+		{ 155, 0xd7, 0x5f, 0xff }, { 156, 0xd7, 0x87, 0x00 },
+		{ 157, 0xd7, 0x87, 0x5f }, { 158, 0xd7, 0x87, 0x87 },
+		{ 159, 0xd7, 0x87, 0xaf }, { 160, 0xd7, 0x87, 0xd7 },
+		{ 161, 0xd7, 0x87, 0xff }, { 162, 0xd7, 0xaf, 0x00 },
+		{ 163, 0xd7, 0xaf, 0x5f }, { 164, 0xd7, 0xaf, 0x87 },
+		{ 165, 0xd7, 0xaf, 0xaf }, { 166, 0xd7, 0xaf, 0xd7 },
+		{ 167, 0xd7, 0xaf, 0xff }, { 168, 0xd7, 0xd7, 0x00 },
+		{ 169, 0xd7, 0xd7, 0x5f }, { 170, 0xd7, 0xd7, 0x87 },
+		{ 171, 0xd7, 0xd7, 0xaf }, { 172, 0xd7, 0xd7, 0xd7 },
+		{ 173, 0xd7, 0xd7, 0xff }, { 174, 0xd7, 0xff, 0x00 },
+		{ 175, 0xd7, 0xff, 0x5f }, { 176, 0xd7, 0xff, 0x87 },
+		{ 177, 0xd7, 0xff, 0xaf }, { 178, 0xd7, 0xff, 0xd7 },
+		{ 179, 0xd7, 0xff, 0xff }, { 237, 0xda, 0xda, 0xda },
+		{ 238, 0xe4, 0xe4, 0xe4 }, { 239, 0xee, 0xee, 0xee },
+		{ 180, 0xff, 0x00, 0x00 }, { 181, 0xff, 0x00, 0x5f },
+		{ 182, 0xff, 0x00, 0x87 }, { 183, 0xff, 0x00, 0xaf },
+		{ 184, 0xff, 0x00, 0xd7 }, { 185, 0xff, 0x00, 0xff },
+		{ 186, 0xff, 0x5f, 0x00 }, { 187, 0xff, 0x5f, 0x5f },
+		{ 188, 0xff, 0x5f, 0x87 }, { 189, 0xff, 0x5f, 0xaf },
+		{ 190, 0xff, 0x5f, 0xd7 }, { 191, 0xff, 0x5f, 0xff },
+		{ 192, 0xff, 0x87, 0x00 }, { 193, 0xff, 0x87, 0x5f },
+		{ 194, 0xff, 0x87, 0x87 }, { 195, 0xff, 0x87, 0xaf },
+		{ 196, 0xff, 0x87, 0xd7 }, { 197, 0xff, 0x87, 0xff },
+		{ 198, 0xff, 0xaf, 0x00 }, { 199, 0xff, 0xaf, 0x5f },
+		{ 200, 0xff, 0xaf, 0x87 }, { 201, 0xff, 0xaf, 0xaf },
+		{ 202, 0xff, 0xaf, 0xd7 }, { 203, 0xff, 0xaf, 0xff },
+		{ 204, 0xff, 0xd7, 0x00 }, { 205, 0xff, 0xd7, 0x5f },
+		{ 206, 0xff, 0xd7, 0x87 }, { 207, 0xff, 0xd7, 0xaf },
+		{ 208, 0xff, 0xd7, 0xd7 }, { 209, 0xff, 0xd7, 0xff },
+		{ 210, 0xff, 0xff, 0x00 }, { 211, 0xff, 0xff, 0x5f },
+		{ 212, 0xff, 0xff, 0x87 }, { 213, 0xff, 0xff, 0xaf },
+		{ 214, 0xff, 0xff, 0xd7 }, { 215, 0xff, 0xff, 0xff },
+	};
+
+	static const unsigned char color_256_to_16[256] = {
+		 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+		 0,  4,  4,  4, 12, 12,  2,  6,  4,  4, 12, 12,  2,  2,  6,  4,
+		12, 12,  2,  2,  2,  6, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10,
+		10, 10, 10, 14,  1,  5,  4,  4, 12, 12,  3,  8,  4,  4, 12, 12,
+		 2,  2,  6,  4, 12, 12,  2,  2,  2,  6, 12, 12, 10, 10, 10, 10,
+		14, 12, 10, 10, 10, 10, 10, 14,  1,  1,  5,  4, 12, 12,  1,  1,
+		 5,  4, 12, 12,  3,  3,  8,  4, 12, 12,  2,  2,  2,  6, 12, 12,
+		10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14,  1,  1,  1,  5,
+		12, 12,  1,  1,  1,  5, 12, 12,  1,  1,  1,  5, 12, 12,  3,  3,
+		 3,  7, 12, 12, 10, 10, 10, 10, 14, 12, 10, 10, 10, 10, 10, 14,
+		 9,  9,  9,  9, 13, 12,  9,  9,  9,  9, 13, 12,  9,  9,  9,  9,
+		13, 12,  9,  9,  9,  9, 13, 12, 11, 11, 11, 11,  7, 12, 10, 10,
+		10, 10, 10, 14,  9,  9,  9,  9,  9, 13,  9,  9,  9,  9,  9, 13,
+		 9,  9,  9,  9,  9, 13,  9,  9,  9,  9,  9, 13,  9,  9,  9,  9,
+		 9, 13, 11, 11, 11, 11, 11, 15,  0,  0,  0,  0,  0,  0,  8,  8,
+		 8,  8,  8,  8,  7,  7,  7,  7,  7,  7, 15, 15, 15, 15, 15, 15
+	};
+
+	Color rgb = { .r = r, .g = g, .b = b };
+	const Color *found = bsearch(&rgb, color_to_256, LENGTH(color_to_256),
+	    sizeof color_to_256[0], color_compare);
+
+	if (!found) {
+		unsigned lowest = UINT_MAX;
+		found = color_from_256;
+		for (int i = 0; i < 240; i++) {
+			int dr = (int)color_from_256[i].r - r;
+			int dg = (int)color_from_256[i].g - g;
+			int db = (int)color_from_256[i].b - b;
+
+			unsigned int distance = dr * dr + dg * dg + db * db;
+			if (distance < lowest) {
+				lowest = distance;
+				found = &color_from_256[i];
+			}
+		}
+	}
+
+	if (COLORS <= 16)
+		return color_256_to_16[found->i + 16];
+	return found->i + 16;
+}
+
+/* Convert color from string. */
+static int color_fromstring(const char *s)
+{
+	if (*s == '#' && strlen(s) == 7) {
+		const char *cp;
+		unsigned char r, g, b;
+		for (cp = s + 1; isxdigit((unsigned char)*cp); cp++);
+		if (*cp != '\0')
+			return -1;
+		int n = sscanf(s + 1, "%2hhx%2hhx%2hhx", &r, &g, &b);
+		if (n != 3)
+			return -1;
+		return color_find_rgb(r, g, b);
+	}
+
+	if (strcasecmp(s, "black") == 0)
+		return 0;
+	if (strcasecmp(s, "red") == 0)
+		return 1;
+	if (strcasecmp(s, "green") == 0)
+		return 2;
+	if (strcasecmp(s, "yellow") == 0)
+		return 3;
+	if (strcasecmp(s, "blue") == 0)
+		return 4;
+	if (strcasecmp(s, "magenta") == 0)
+		return 5;
+	if (strcasecmp(s, "cyan") == 0)
+		return 6;
+	if (strcasecmp(s, "white") == 0)
+		return 7;
+	return -1;
+}
+
+static unsigned int color_pair_hash(short fg, short bg) {
 	if (fg == -1)
 		fg = COLORS;
 	if (bg == -1)
@@ -96,7 +460,7 @@ static unsigned int color_hash(short fg, short bg) {
 	return fg * (COLORS + 2) + bg;
 }
 
-static short color_get(short fg, short bg) {
+static short color_pair_get(short fg, short bg) {
 	static bool has_default_colors;
 	static short *color2palette, default_fg, default_bg;
 	static short color_pairs_max, color_pair_current;
@@ -128,13 +492,13 @@ static short color_get(short fg, short bg) {
 	if (!color2palette || (fg == -1 && bg == -1))
 		return 0;
 
-	unsigned int index = color_hash(fg, bg);
+	unsigned int index = color_pair_hash(fg, bg);
 	if (color2palette[index] == 0) {
 		short oldfg, oldbg;
 		if (++color_pair_current >= color_pairs_max)
 			color_pair_current = 1;
 		pair_content(color_pair_current, &oldfg, &oldbg);
-		unsigned int old_index = color_hash(oldfg, oldbg);
+		unsigned int old_index = color_pair_hash(oldfg, oldbg);
 		if (init_pair(color_pair_current, fg, bg) == OK) {
 			color2palette[old_index] = 0;
 			color2palette[index] = color_pair_current;
@@ -144,6 +508,45 @@ static short color_get(short fg, short bg) {
 	return color2palette[index];
 }
 
+static bool ui_window_syntax_style(UiWin *w, int id, const char *style) {
+	UiCursesWin *win = (UiCursesWin*)w;
+	if (id >= UI_STYLES_MAX)
+		return false;
+	short fg = -1, bg = -1;
+	attr_t attr = A_NORMAL;
+	char *style_copy = strdup(style), *option = style_copy, *next, *p;
+	while (option) {
+		if ((next = strchr(option, ',')))
+			*next++ = '\0';
+		if ((p = strchr(option, ':')))
+			*p++ = '\0';
+		if (!strcasecmp(option, "bold")) {
+			attr |= A_BOLD;
+		} else if (!strcasecmp(option, "notbold")) {
+			attr &= ~A_BOLD;
+#ifdef A_ITALIC
+		} else if (!strcasecmp(option, "italics")) {
+			attr |= A_ITALIC;
+		} else if (!strcasecmp(option, "notitalics")) {
+			attr &= ~A_ITALIC;
+#endif
+		} else if (!strcasecmp(option, "underlined")) {
+			attr |= A_UNDERLINE;
+		} else if (!strcasecmp(option, "notunderlined")) {
+			attr &= ~A_UNDERLINE;
+		} else if (!strcasecmp(option, "fore")) {
+			fg = color_fromstring(p);
+		} else if (!strcasecmp(option, "back")) {
+			bg = color_fromstring(p);
+		}
+		option = next;
+	}
+	attr |= COLOR_PAIR(color_pair_get(fg, bg));
+	win->styles[id] = attr;
+	free(style_copy);
+	return true;
+}
+
 static void ui_window_resize(UiCursesWin *win, int width, int height) {
 	win->width = width;
 	win->height = height;
@@ -365,7 +768,7 @@ static void ui_window_draw_text(UiWin *w, const Line *line) {
 	int width = view_width_get(win->view);
 	for (const Line *l = line; l; l = l->next) {
 		for (int x = 0; x < width; x++) {
-			int attr = l->cells[x].attr;
+			int attr = win->styles[l->cells[x].attr];
 			if (l->cells[x].cursor && (win->ui->selwin == win || win->ui->prompt_win == win))
 				attr = A_NORMAL | A_REVERSE;
 			if (l->cells[x].selected)
@@ -427,6 +830,7 @@ static UiWin *ui_window_new(Ui *ui, View *view, File *file) {
 		.draw_text = ui_window_draw_text,
 		.options = ui_window_options,
 		.reload = ui_window_reload,
+		.syntax_style = ui_window_syntax_style,
 	};
 
 	if (!(win->win = newwin(0, 0, 0, 0)) || !(win->winstatus = newwin(1, 0, 0, 0))) {
@@ -574,7 +978,7 @@ static void ui_terminal_restore(Ui *ui) {
 	termkey_start(uic->termkey);
 }
 
-Ui *ui_curses_new(Color *colors) {
+Ui *ui_curses_new(void) {
 
 	UiCurses *uic = calloc(1, sizeof(UiCurses));
 	Ui *ui = (Ui*)uic;
@@ -628,12 +1032,6 @@ Ui *ui_curses_new(Color *colors) {
 		.terminal_restore = ui_terminal_restore,
 	};
 
-	for (Color *color = colors; color && color->fg; color++) {
-		if (color->attr == 0)
-			color->attr = A_NORMAL;
-		color->attr |= COLOR_PAIR(color_get(color->fg, color->bg));
-	}
-
 	struct sigaction sa;
 	sa.sa_flags = 0;
 	sigemptyset(&sa.sa_mask);