added working directory flag

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "remux"
-version = "0.3.6"
+version = "0.4.0"
 edition = "2021"
 authors = [ "Valerie Wolfe <sleeplessval@gmail.com>" ]
 description = "A friendly command shortener for tmux"

man/remux.1

@@ -1,6 +1,5 @@
 .Dd $Mdocdate$
 .Dt REMUX 1
-.Os
 .Sh NAME
 .Nm remux
 .Nd a command shortener for
@@ -8,6 +7,7 @@
 .Sh SYNOPSIS
 .Nm remux
 .Op Fl dhnqrtv
+.Op Fl D Ar path
 .Op Ar command
 .Op args...
 .Sh DESCRIPTION
@@ -35,6 +35,8 @@ Attaches to an existing session.
 .Bl -tag -width Ds -compact
 .It Fl d , Fl -detach
 Detach all other connections to the session.
+.It Fl D , Fl -dir Ar path
+Sets the working directory for the given command.
 .It Fl n , Fl -nest
 Allow nesting (attaching a session from inside another session).
 .It Fl r , Fl -read-only

src/error.rs

@@ -75,3 +75,10 @@ pub fn not_in_session(cmd: &'static str) -> ! {
 	exit(7);
 }
 
+
+///	failed to set working directory; code 8
+pub fn working_dir_fail(working_dir: &str) -> ! {
+	eprintln!("remux: failed to set working directory to '{working_dir}'");
+	exit(8);
+}
+

src/flag.rs

@@ -3,13 +3,14 @@ use pico_args::Arguments;
 
 type Flag = [&'static str;2];
 
-pub static DETACH: Flag		= ["-d", "--detach"];
-pub static HELP: Flag		= ["-h", "--help"];
-pub static NEST: Flag		= ["-n", "--nest"];
-pub static QUIET: Flag		= ["-q", "--quiet"];
-pub static READ_ONLY: Flag	= ["-r", "--read-only"];
-pub static TARGET: Flag		= ["-t", "--target"];
-pub static VERSION: Flag	= ["-v", "--version"];
+pub static DETACH: Flag			= [ "-d", "--detach" ];
+pub static HELP: Flag			= [ "-h", "--help" ];
+pub static NEST: Flag			= [ "-n", "--nest" ];
+pub static QUIET: Flag			= [ "-q", "--quiet" ];
+pub static READ_ONLY: Flag		= [ "-r", "--read-only" ];
+pub static TARGET: Flag			= [ "-t", "--target" ];
+pub static VERSION: Flag		= [ "-v", "--version" ];
+pub static WORKING_DIR: Flag	= [ "-D", "--dir" ];
 
 pub struct Flags {
 	pub detached: bool,
@@ -17,6 +18,7 @@ pub struct Flags {
 	pub quiet: bool,
 	pub read_only: bool,
 	pub target: Option<String>,
+	pub working_dir: Option<String>
 }
 
 impl Flags {
@@ -27,13 +29,15 @@ impl Flags {
 		let quiet		= args.contains(QUIET);
 		let read_only	= args.contains(READ_ONLY);
 		let target		= args.value_from_str(TARGET).ok();
+		let working_dir	= args.value_from_str(WORKING_DIR).ok();
 
 		Flags {
 			detached,
 			nested,
 			quiet,
 			read_only,
-			target
+			target,
+			working_dir
 		}
 	}
 
@@ -43,7 +47,8 @@ impl Flags {
 			nested: self.nested,
 			quiet: self.quiet,
 			read_only: self.read_only,
-			target: None
+			target: self.target.clone(),
+			working_dir: self.working_dir.clone()
 		}
 	}
 

src/state.rs

@@ -29,6 +29,9 @@ impl State<'_> {
 		let flags = Flags::from(args);
 		let tmux_var = env::var(TMUX).ok();
 		let session = tmux_var.is_some();
+
+		if let Some(ref path) = flags.working_dir { State::set_working_dir(&path); }
+
 		let title = if session { message(MSG_SESSION_NAME) } else { None };
 		let repository = Repository::find();
 
@@ -62,6 +65,13 @@ impl State<'_> {
 		if !self.session { error::not_in_session(cmd); }
 	}
 
+	fn set_working_dir(path: &str) {
+		let result = env::set_current_dir(path);
+		if result.is_err() {
+			error::working_dir_fail(path);
+		}
+	}
+
 	pub fn target(&mut self) -> Option<String> { self.args.subcommand().unwrap_or(None) }
 	pub fn target_title(&mut self) -> Option<String> {
 		let from_args = self.target();