Support run a command

README.md

@@ -116,6 +116,7 @@ We need contributors. Please visit the ToDo list.
   - Batch rename/move/delete (needs vidir)
   - Show directories in custom color (default: blue)
   - Spawn a subshell in the current directory
+  - Run a command
   - Run custom scripts in the current directory
   - Run current file as executable
   - Change directory at exit (*easy* shell integration)
@@ -248,8 +249,8 @@ Press <kbd>?</kbd> in `nnn` to see the list anytime.
               t  Modification time   s  Size
  MISC
           !, ^]  Spawn SHELL in dir  o  Launch app
-              R  Run custom script  ^S  Execute entry
-              L  Lock terminal
+             ^S  Run a command       R  Run custom script
+              C  Execute entry       L  Lock terminal
 ```
 
 Help & settings, file details, media info and archive listing are shown in the PAGER. Please use the PAGER-specific keys in these screens.

nnn.1

@@ -147,12 +147,14 @@ MISC
 Spawn SHELL in current directory (fallback sh)
 .It Ic o
 Launch an application (takes 2 combined arguments)
+.It Ic ^S
+Run a command
 .It Ic R
 Run a custom script
-.It Ic ^S
+.It Ic C
 Execute entry
 .It Ic L
-Lock terminal (Linux only)
+Lock terminal
 .El
 .Pp
 Backing up one directory level will set the cursor position at the

src/nnn.c

@@ -1288,7 +1288,7 @@ end:
 }
 
 /* Show a prompt with input string and return the changes */
-static char *xreadline(char *fname, char *prompt)
+static char *xreadline(char *prefill, char *prompt)
 {
 	size_t len, pos;
 	int x, y, r;
@@ -1298,9 +1298,9 @@ static char *xreadline(char *fname, char *prompt)
 	cleartimeout();
 	printprompt(prompt);
 
-	if (fname) {
-		DPRINTF_S(fname);
-		len = pos = mbstowcs(buf, fname, NAME_MAX);
+	if (prefill) {
+		DPRINTF_S(prefill);
+		len = pos = mbstowcs(buf, prefill, NAME_MAX);
 	} else
 		len = (size_t)-1;
 
@@ -2060,8 +2060,8 @@ static bool show_help(char *path)
              "et  Modification time   s  Size\n"
 "1MISC\n"
          "a!, ^]  Spawn SHELL in dir  o  Launch app\n"
-             "eR  Run custom script  ^S  Execute entry\n"
-             "eL  Lock terminal\n"};
+            "d^S  Run a command       R  Run custom script\n"
+             "eC  Execute entry       L  Lock terminal\n"};
 
 	if (fd == -1)
 		return FALSE;
@@ -3368,7 +3368,8 @@ nochange:
 			if (!ndents)
 				goto nochange; // fallthrough
 		case SEL_SHELL: // fallthrough
-		case SEL_SCRIPT:
+		case SEL_SCRIPT: // fallthrough
+		case SEL_RUNCMD:
 			if (sel == SEL_EXEC) {
 				/* Check if this is a directory */
 				if (S_ISDIR(dents[cur].mode)) {
@@ -3386,7 +3387,11 @@ nochange:
 				spawn(newpath, NULL, NULL, path, F_NORMAL | F_SIGINT);
 			} else if (sel == SEL_SCRIPT) {
 				tmp = getenv("NNN_SCRIPT");
-				if (tmp) {
+				if (!tmp) {
+					printmsg("set NNN_SCRIPT");
+					goto nochange;
+				}
+
 				if (getenv("NNN_MULTISCRIPT")) {
 					size_t _len = xstrlcpy(newpath, tmp, PATH_MAX);
 
@@ -3411,10 +3416,11 @@ nochange:
 				if (ndents)
 					dir = dents[cur].name;
 				spawn(shell, tmp, dir, path, F_NORMAL | F_SIGINT);
-				} else {
-					printmsg("set NNN_SCRIPT");
+			} else if (sel == SEL_RUNCMD) {
+				tmp = xreadline(NULL, "> ");
+				if (!tmp || !tmp[0])
 					goto nochange;
-				}
+				spawn(shell, "-c", tmp, path, F_NORMAL | F_SIGINT);
 			} else
 				spawn(shell, shell_arg, NULL, path, F_NORMAL | F_MARKER);
 

src/nnn.h

@@ -83,6 +83,7 @@ enum action {
 	SEL_EXEC,
 	SEL_SHELL,
 	SEL_SCRIPT,
+	SEL_RUNCMD,
 	SEL_RUNEDIT,
 	SEL_RUNPAGE,
 	SEL_LOCK,
@@ -211,13 +212,15 @@ static struct key bindings[] = {
 	/* Show help */
 	{ '?',            SEL_HELP },
 	/* Execute file */
-	{ CONTROL('S'),   SEL_EXEC },
+	{ 'C',            SEL_EXEC },
 	/* Run command */
 	{ '!',            SEL_SHELL },
 	{ CONTROL(']'),   SEL_SHELL },
 	/* Run a custom script */
 	{ 'R',            SEL_SCRIPT },
-	/* Run command with argument */
+	/* Run a command */
+	{ CONTROL('S'),   SEL_RUNCMD },
+	/* Open in EDITOR or PAGER */
 	{ 'e',            SEL_RUNEDIT },
 	{ 'p',            SEL_RUNPAGE },
 	/* Lock screen */