Support make option O_CTX8 for 8 contexts

Note that this is not compatible with 4 contexts.

Makefile

@@ -61,6 +61,10 @@ ifeq ($(O_NOFIFO),1)
 	CPPFLAGS += -DNOFIFO
 endif
 
+ifeq ($(O_CTX8),1)
+	CPPFLAGS += -DCTX8
+endif
+
 ifeq ($(shell $(PKG_CONFIG) ncursesw && echo 1),1)
 	CFLAGS_CURSES ?= $(shell $(PKG_CONFIG) --cflags ncursesw)
 	LDLIBS_CURSES ?= $(shell $(PKG_CONFIG) --libs   ncursesw)

misc/haiku/Makefile

@@ -52,6 +52,10 @@ ifeq ($(O_NOMOUSE),1)
 	CPPFLAGS += -DNOMOUSE
 endif
 
+ifeq ($(O_CTX8),1)
+	CPPFLAGS += -DCTX8
+endif
+
 ifeq ($(shell $(PKG_CONFIG) ncursesw && echo 1),1)
 	CFLAGS_CURSES ?= $(shell $(PKG_CONFIG) --cflags ncursesw)
 	LDLIBS_CURSES ?= $(shell $(PKG_CONFIG) --libs   ncursesw)

src/nnn.c

@@ -157,7 +157,13 @@
 #define EXEC_ARGS_MAX 8
 #define LIST_FILES_MAX (1 << 16)
 #define SCROLLOFF 3
+
+#ifndef CTX8
 #define CTX_MAX 4
+#else
+#define CTX_MAX 8
+#endif
+
 #define MIN_DISPLAY_COLS ((CTX_MAX * 2) + 2) /* Two chars for [ and ] */
 #define LONG_SIZE sizeof(ulong)
 #define ARCHIVE_CMD_LEN 16
@@ -5738,6 +5744,12 @@ nochange:
 		case SEL_CTX2: // fallthrough
 		case SEL_CTX3: // fallthrough
 		case SEL_CTX4:
+#ifdef CTX8
+		case SEL_CTX5:
+		case SEL_CTX6:
+		case SEL_CTX7:
+		case SEL_CTX8:
+#endif
 			r = handle_context_switch(sel);
 			if (r < 0)
 				continue;

src/nnn.h

@@ -60,6 +60,12 @@ enum action {
 	SEL_CTX2,
 	SEL_CTX3,
 	SEL_CTX4,
+#ifdef CTX8
+	SEL_CTX5,
+	SEL_CTX6,
+	SEL_CTX7,
+	SEL_CTX8,
+#endif
 	SEL_PIN,
 	SEL_FLTR,
 	SEL_MFLTR,
@@ -165,6 +171,12 @@ static struct key bindings[] = {
 	{ '2',            SEL_CTX2 },
 	{ '3',            SEL_CTX3 },
 	{ '4',            SEL_CTX4 },
+#ifdef CTX8
+	{ '5',            SEL_CTX5 },
+	{ '6',            SEL_CTX6 },
+	{ '7',            SEL_CTX7 },
+	{ '8',            SEL_CTX8 },
+#endif
 	/* Mark a path to visit later */
 	{ ',',            SEL_PIN },
 	/* Filter */