Add target norl to drop libreadline

Makefile

@@ -22,7 +22,7 @@ CFLAGS += -Wall -Wextra -Wno-unused-parameter
 CFLAGS += $(CFLAGS_OPTIMIZATION)
 CFLAGS += $(CFLAGS_CURSES)
 
-LDLIBS += -lreadline $(LDLIBS_CURSES)
+LDLIBS += $(LDLIBS_CURSES)
 
 DISTFILES = src nnn.1 Makefile README.md LICENSE
 SRC = src/nnn.c
@@ -33,10 +33,14 @@ all: $(BIN)
 $(SRC): src/nnn.h
 
 $(BIN): $(SRC)
-	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LDLIBS) -lreadline
 
 debug: $(SRC)
-	$(CC) -DDBGMODE -g $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $(BIN) $^ $(LDLIBS)
+	$(CC) -DDBGMODE -g $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $(BIN) $^ $(LDLIBS) -lreadline
+
+norl: $(SRC)
+	$(CC) -DNORL $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $(BIN) $^ $(LDLIBS)
+	$(STRIP) $(BIN)
 
 install: all
 	$(INSTALL) -m 0755 -d $(DESTDIR)$(PREFIX)/bin

README.md

@@ -135,7 +135,7 @@ Intrigued? Find out [HOW](https://github.com/jarun/nnn/wiki/performance-factors)
 
 #### Library dependencies
 
-`nnn` needs a curses library with wide character support (like ncursesw), libreadline and standard libc.
+`nnn` needs a curses library with wide character support (like ncursesw), libreadline and standard libc. It's possible to drop libreadline using the Makefile target `norl`.
 
 #### Utility dependencies
 

src/nnn.c

@@ -79,8 +79,10 @@
 #include <locale.h>
 #include <pwd.h>
 #include <stdio.h>
+#ifndef NORL
 #include <readline/history.h>
 #include <readline/readline.h>
+#endif
 #include <regex.h>
 #include <signal.h>
 #include <stdarg.h>
@@ -3879,11 +3881,14 @@ nochange:
 				}
 				break;
 			default: /* SEL_RUNCMD */
+#ifndef NORL
 				if (cfg.picker) {
 					/* readline prompt breaks the interface, use stock */
+#endif
 					tmp = xreadline(NULL, "> ");
 					if (tmp[0])
 						spawn(shell, "-c", tmp, path, F_NORMAL | F_SIGINT);
+#ifndef NORL
 				} else {
 					exitcurses();
 
@@ -3909,6 +3914,7 @@ nochange:
 						free(tmp);
 					}
 				}
+#endif
 			}
 
 			/* Continue in navigate-as-you-type mode, if enabled */
@@ -4243,6 +4249,7 @@ int main(int argc, char *argv[])
 	crc8init();
 #endif
 
+#ifndef NORL
 	/* Bind TAB to cycling */
 	rl_variable_bind("completion-ignore-case", "on");
 #ifdef __linux__
@@ -4251,6 +4258,7 @@ int main(int argc, char *argv[])
 	rl_bind_key('\t', rl_complete);
 #endif
 	read_history(NULL);
+#endif
 
 #ifdef DBGMODE
 	enabledbg();
@@ -4261,7 +4269,9 @@ int main(int argc, char *argv[])
 	browse(ipath);
 	exitcurses();
 
+#ifndef NORL
 	write_history(NULL);
+#endif
 
 	if (cfg.pickraw) {
 		if (copybufpos) {