Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "remux"
-version = "0.3.4"
+version = "0.3.1"
 edition = "2021"
 authors = [ "Valerie Wolfe <sleeplessval@gmail.com>" ]
 description = "A friendly command shortener for tmux"

README.md

@@ -23,6 +23,7 @@ remux n foo
 #	list sessions
 tmux ls
 remux l
+remux
 
 #	attach
 tmux a -t foo
@@ -47,7 +48,8 @@ tmux swi -t foo
 rmux s foo
 
 #	cd to session path
-cd `tmux display-mes -p "#{session_path}"`
+tmux run 'printf "#{session_path}" > /tmp/tmux_path'
+cd `cat /tmp/tmux_path`
 cd `rmux p`
 
 ```

man/remux.1

@@ -1,167 +0,0 @@
-.Dd $Mdocdate$
-.Dt REMUX 1
-.Os
-.Sh NAME
-.Nm remux
-.Nd a command shortener for
-.Xr tmux 1
-.Sh SYNOPSIS
-.Nm remux
-.Op Fl dhnqrtv
-.Op command
-.Op args...
-.Sh DESCRIPTION
-.Nm
-is a wrapper and command shortener for
-.Xr tmux 1 ,
-primarily focused on improving the ergonomics of using named sessions.
-.Pp
-If no command is provided, remux will use the context action. Inside a repository, remux will attach or create. If in a session or outside a repository, remux will list sessions.
-.Sh COMMANDS
-.Nm remux
-commands are split into two categories: global commands, which can be used anywhere, and session commands, which can only be used from inside a session.
-.Ss GLOBAL COMMANDS
-.Bl -tag -width Ds
-.It Xo Ic attach
-.Op Fl dnr
-.Op Ar title
-.Op Ar window
-.Xc
-.Bd -literal -compact
-aliases: a
-Attaches to an existing session.
-.Ed
-.Pp
-.Bl -tag -width Ds -compact
-.It Fl d , Fl -detach
-Detach all other connections to the session.
-.It Fl n , Fl -nest
-Allow nesting (attaching a session from inside another session).
-.It Fl r , Fl -read-only
-Attach the session in read-only mode.
-.It Ar title
-The title of the target session. If not given, remux will try to use the name of the repository containing the current directory.
-.It Ar window
-The name of the window to attach to.
-.El
-.It Xo Ic detach
-.Op Ar title
-.Xc
-.Bd -literal -compact
-aliases: d
-Detaches all clients from the target session.
-.Ed
-.It Xo Ic has
-.Op Fl q
-.Op Ar title
-.Xc
-.Bd -literal -compact
-aliases: h
-Checks whether or not a session exists.
-.Ed
-.Pp
-.Bl -tag -width Ds -compact
-.It Fl q , Fl -quiet
-Run silently without printing to standard output.
-.It Ar title
-The title of the target session. If not given, remux will attempt to use the name of the repository containing the current directory.
-.El
-.It Ic list
-.Bd -literal -compact
-aliases: l, ls
-Pretty-prints a list of tmux sessions.
-.Ed
-.It Xo Ic new
-.Op Fl dn
-.Op Fl t\ |\ --target Ar path
-.Op Ar title
-.Op Ar command
-.Xc
-.Bd -literal -compact
-aliases: n
-Creates a new session.
-.Ed
-.Pp
-.Bl -tag -width Ds -compact
-.It Fl d , Fl -detach
-Creates the session without attaching.
-.It Fl n , Fl -nest
-Allow nesting (attaching a session from inside another session).
-.It Fl t , Fl -target Ar path
-Sets the session path to the provided directory.
-.It Ar title
-Create the session with the given title. If not given, remux will attempt to use the name of the repository containing the current directory.
-.El
-.El
-.Ss SESSION COMMANDS
-.Bl -tag -width Ds
-.It Ic path
-.Bd -literal -compact
-aliases: p
-Prints the session path.
-.Ed
-.It Xo Ic switch
-.Op Fl r , Fl -read-only
-.Ar title
-.Xc
-.Bd -literal -compact
-aliases: s
-Switches from the current session to the target.
-.Ed
-.Pp
-.Bl -tag -width Ds -compact
-.It Fl r , Fl -read-only
-Switch to the target session in read-only mode.
-.It Ar title
-The title of the session to switch to.
-.El
-.It Ic title
-.Bd -literal -compact
-aliases: t, which
-Prints the session title.
-.El
-.Sh ENVIRONMENT
-.Bl -tag -width Ds
-.It Ev REMUX_ATTACH_SYMBOL
-Changes the symbol displayed for attached sessions in the
-.Ic list
-command.
-Default: '*'
-.It Ev REMUX_CURRENT_SYMBOL
-Changes the symbol displayed for the current session in the
-.Ic list
-command.
-Default: '>'
-.It Ev REMUX_NEW_WINDOW
-Provides a default windows name when creating a new session. Unused if empty.
-Default: (unset)
-.El
-.Sh EXIT STATUS
-.Bl -tag -Width Ds
-.It 1
-Unmatched command name.
-.It 2
-Unmatched target session.
-.It 3
-Unmatched help topic.
-.It 4
-Missing or invalid target; target was not given or is the same as the current session.
-.It 5
-.Nm remux
-is not running from within a terminal.
-.It 6
-Nesting error; nest flag is missing or inappropriate.
-.It 7
-A session command was attempted outside a session.
-.Sh EXAMPLES
-Use
-.Ic path
-to navigate to the session path:
-.Pp
-.Dl $ cd `remux p`
-.Pp
-.Sh SEE ALSO
-.Xr tmux 1
-.Sh AUTHORS
-.An -nosplit
-.An Valerie Wolfe Aq Mt sleeplessval@gmail.com

src/command/session.rs

@@ -1,41 +1,26 @@
 //!	commands accessible from within a session
+use std::fs::read_to_string;
 
+use pico_args::Arguments;
 use tmux_interface::{
 	Tmux,
 	commands
 };
 
-use crate::{
+use crate::{ error, flag, util };
-	error,
-	state::State,
-	util
-};
 
-pub fn path(state: &mut State) {
+const TMP_ROOT: &str = "/tmp/remux_path";
-	state.session_enforce("path");
 
-	let message = commands::DisplayMessage::new().print().message("#{session_path}");
+pub fn switch(pargs: &mut Arguments) {
-
-	let result = Tmux::new().add_command(message).output().unwrap();
-	let text = String::from_utf8(result.0.stdout);
-
-	if let Ok(output) = text {
-		//	trim the trailing line break
-		let target = output.len() - 1;
-		println!("{}", &output[0..target]);
-	}
-}
-
-pub fn switch(state: &mut State) {
 	util::terminal_enforce();
 	//	refuse to run outside a session
-	state.session_enforce("switch");
+	util::session_enforce("switch");
 
 	//	consume optional flags
-	let read_only = state.flags.read_only;
+	let read_only = pargs.contains(flag::READ_ONLY);
 	//TODO: -d flag handling needs to be done manually
 
-	let args = state.args.clone().finish();
+	let args = pargs.clone().finish();
 	if args.len() < 1 { error::missing_target(); }
 	let target = args.get(0).unwrap().to_string_lossy().to_string();
 
@@ -51,8 +36,17 @@ pub fn switch(state: &mut State) {
 		.output().ok();
 }
 
-pub fn title(state: State) {
+pub fn path() {
-	state.session_enforce("title");
+	util::session_enforce("path");
-	if let Some(title) = state.title { println!("{title}"); }
+
+	let exec = commands::Run::new().shell_command("printf '#{session_path}' > ".to_string() + TMP_ROOT);
+	Tmux::new()
+		.add_command(exec)
+		.output().ok();
+
+	if let Ok(text) = read_to_string(TMP_ROOT) {
+		println!("{text}");
+		std::fs::remove_file(TMP_ROOT).ok();
+	}
 }
 

src/command/share.rs

@@ -1,5 +1,8 @@
 //! globally available tmux commands.
-use std::process::exit;
+use std::{
+	ffi::OsString,
+	process::exit
+};
 
 use pico_args::{ Arguments, Error };
 use termion::{ color, style };
@@ -12,24 +15,31 @@ use crate::{
 	env::{ self, env_var },
 	error,
 	flag,
-	state::State,
 	util
 };
 
-pub fn attach(state: &mut State) {
+pub fn attach(pargs: &mut Arguments) {
+	//	must be run from terminal
 	util::terminal_enforce();
-	state.nest_init();
+	//	don't allow unflagged nests
+	util::prevent_nest();
 
 	//	consume optional flags
-	let read_only = state.flags.read_only;
+	let read_only = pargs.contains(flag::READ_ONLY);
-	let detach_other = state.flags.detached;
+	let detach_other = pargs.contains(flag::DETACH);
 
-	//	consume arguments
+	let args = pargs.clone().finish();
-	let target = state.target_title().unwrap();
+	let target: String;
-	let window = state.target();
+	let window: Option<&OsString>;
-
+	if args.len() < 1 {
-	//	do not allow attaching to the same session
+		//	missing name will attempt to fall back to repository
-	if state.session && target == state.title.clone().unwrap() { error::same_session(); }
+		target = util::repo_fallback();
+		if !util::session_exists(target.clone()) { error::missing_target(); }
+		window = None;
+	} else {
+		target = args.get(0).unwrap().to_string_lossy().to_string();
+		window = args.get(1);
+	}
 
 	//	make sure the session exists
 	let exists = util::session_exists(target.clone());
@@ -44,7 +54,7 @@ pub fn attach(state: &mut State) {
 	let select_window: Option<commands::SelectWindow>;
 	if let Some(window) = window {
 		let mut command = commands::SelectWindow::new();
-		command.target_window = Some(window.into());
+		command.target_window = Some(window.to_string_lossy());
 		select_window = Some(command);
 	} else { select_window = None; }
 
@@ -52,33 +62,18 @@ pub fn attach(state: &mut State) {
 	let mut tmux = Tmux::new().add_command(attach);
 	if let Some(select_window) = select_window { tmux = tmux.add_command(select_window); }
 	tmux.output().ok();
-
-	state.nest_deinit();
 }
 
-pub fn context_action(state: &State) {
+pub fn detach(pargs: &mut Arguments) {
-	if !state.session {
-		if let Some(repository) = &state.repository {
-			let target = repository.name.clone();
-			let mut args = Arguments::from_vec( vec![(&target).into()] );
-			let mut substate = State::new(&mut args);
-			substate.flags = state.flags.clone();
-			if util::session_exists(&target) {
-				attach(&mut substate);
-			} else {
-				new(&mut substate);
-			}
-			return;
-		}
-	}
-	//	fallback behavior is list
-	list(&state);
-}
-
-pub fn detach(state: &mut State) {
 	util::terminal_enforce();
-
+	//	get target or fallback
-	let target = state.target_title().unwrap();
+	let args = pargs.clone().finish();
+	let target: String;
+	if args.len() < 1 {
+		target = util::repo_fallback();
+	} else {
+		target = args.get(0).unwrap().to_string_lossy().to_string();
+	}
 
 	//	make sure the session exists
 	let exists = util::session_exists(target.clone());
@@ -92,12 +87,18 @@ pub fn detach(state: &mut State) {
 		.disable_echo().output().ok();
 }
 
-pub fn has(state: &mut State) {
+pub fn has(pargs: &mut Arguments) {
 	//	consume optional flags
-	let quiet = state.flags.quiet;
+	let quiet = pargs.contains(flag::QUIET);
 
-	//	get target
+	//	get target or fallback
-	let target = state.target_title().unwrap();
+	let args = pargs.clone().finish();
+	let target: String;
+	if args.len() < 1 {
+		target = util::repo_fallback();
+	} else {
+		target = args.get(0).unwrap().to_string_lossy().to_string();
+	}
 
 	//	run command
 	let success = util::session_exists(target.clone());
@@ -114,7 +115,7 @@ pub fn has(state: &mut State) {
 	exit( if success { 0 } else { 1 });
 }
 
-pub fn list(state: &State) {
+pub fn list() {
 	//	get session list
 	let sessions = util::get_sessions().unwrap_or(Vec::new());
 
@@ -125,57 +126,56 @@ pub fn list(state: &State) {
 	}
 
 	//	get attached session symbol
-	let attach_symbol	= env_var(env::ATTACH_SYMBOL);
+	let attach_symbol = env_var(env::ATTACH_SYMBOL);
-	let current_symbol	= env_var(env::CURRENT_SYMBOL);
 
 	//	pretty print session list
 	println!("sessions:");
 	for session in sessions.into_iter() {
-		let name = session.name.unwrap_or("[untitled]".to_string());
+		let group = session.group.unwrap_or("[untitled]".to_string());
 		let id = session.id.unwrap();
-
 		let attached = session.attached.unwrap_or(0) > 0;
-		let current = Some(name.clone()) == state.title;
 
 		println!(
-			" {current} {name}{reset} ({bold}{blue}{id}{reset}) {bold}{green}{attach}{reset}",
+			"   {group} ({bold}{blue}{id}{reset}) {bold}{green}{attach}{reset}",
 			//	values
 			attach		= if attached { attach_symbol.clone() } else { "".to_string() },
-			current		= if current { current_symbol.clone() } else { " ".to_string() },
 			//	formatting
 			bold		= style::Bold,
 			blue		= color::Fg(color::Blue),
 			green		= color::Fg(color::LightGreen),
-			reset		= style::Reset,
+			reset		= style::Reset
 		);
 	}
 }
 
-pub fn new(state: &mut State) {
+pub fn new(pargs: &mut Arguments) {
 	util::terminal_enforce();
+	//	don't allow unflagged nesting
+	util::prevent_nest();
 
 	//	get optional flags
-	let detached = state.flags.detached;
+	let detached = pargs.contains(flag::DETACH);
-	let target_dir: Result<String, Error> = state.args.value_from_str(flag::TARGET);
+	let target_dir: Result<String, Error> = pargs.value_from_str(flag::TARGET);
-
-	//	delayed nest_init; detached behavior conflicts with nest
-	if !detached { state.nest_init(); }
-	else if state.flags.nested { error::conflict_nest(Some("detached session is not nesting")); }
 
 	//	get environment variables
 	let window_name = env_var(env::NEW_WINDOW_NAME);
 
-	//	consume arguments
+	//	get target or fallback
-	let title = state.target_title().unwrap();
+	let args = pargs.clone().finish();
-	let command = state.target();
+	let title: String;
-
+	let command: Option<&OsString>;
-	//	don't allow duplicate names
+	if args.len() < 1 {
-	let exists = util::session_exists(title.clone());
+		//	attempt repo fallback
-	if exists { error::target_exists(title.clone()); }
+		title = util::repo_fallback();
+		command = None;
+	} else {
+		title = args.get(0).unwrap().to_string_lossy().to_string();
+		command = args.get(1);
+	}
 
 	let mut new = commands::NewSession::new();
-	new = new.session_name(title);
+	new = new.group_name(title);
-	if let Some(command) = command { new.shell_command = Some(command.into()); }
+	if let Some(command) = command { new.shell_command = Some(command.to_string_lossy()); }
 	if detached { new.detached = true; }
 	if let Ok(target_dir) = target_dir { new = new.start_directory(target_dir); }
 

src/env.rs

@@ -3,13 +3,11 @@ use std::env::var;
 pub type EnvVar = (&'static str, &'static str);
 
 pub static ATTACH_SYMBOL: EnvVar	= ("REMUX_ATTACH_SYMBOL", "*");
-pub static CURRENT_SYMBOL: EnvVar	= ("REMUX_CURRENT_SYMBOL", ">");
 pub static NEW_WINDOW_NAME: EnvVar	= ("REMUX_NEW_WINDOW", "");
 
-pub static TMUX: &str				= "TMUX";
-
-///	get or default an environment variable
 pub fn env_var(envvar: EnvVar) -> String {
 	var(envvar.0).unwrap_or(envvar.1.to_string())
 }
 
+pub fn tmux() -> bool { !var("TMUX").unwrap_or("".to_string()).is_empty() }
+

src/error.rs

@@ -6,7 +6,6 @@ pub fn no_subcommand(subcommand: String) {
 	exit(1);
 }
 
-
 ///	target session not found; code 2
 pub fn no_target<S: Into<String>>(target: S) {
 	let target = target.into();
@@ -14,61 +13,30 @@ pub fn no_target<S: Into<String>>(target: S) {
 	exit(2);
 }
 
-
 ///	help topic doesn't exist; code 3
 pub fn no_help(topic: String) {
 	println!("remux: no help for \"{topic}\"");
 	exit(3);
 }
 
-
 ///	user provided no target; code 4
 pub fn missing_target() {
 	println!("remux: no target provided");
 	exit(4);
 }
 
-///	refuse to attach to current session; code 4
-pub fn same_session() {
-	println!("remux: cannot attach to same session");
-	exit(4);
-}
-
-///	a session with the target name already exists; code 4
-pub fn target_exists<S: Into<String>>(target: S) {
-	let target = target.into();
-	println!("remux: session \"{target}\" already exists");
-	exit(4);
-}
-
-
 ///	non-terminal environment prevention; code 5
 pub fn not_terminal() {
 	println!("remux: not running from a terminal");
 	exit(5);
 }
 
-
 ///	tried to nest while not in a session; code 6
 pub fn not_nesting() {
-	println!("remux: inappropriate nesting flag (-n); not in a session");
+	println!("remux: cannot use nesting flag outside a TMUX session");
 	exit(6);
 }
 
-///	operation requires nesting flag; code 6
-pub fn prevent_nest() {
-	println!("remux: the nesting flag (-n) is required for nesting operation");
-	exit(6);
-}
-
-///	operation conflicts with nesting flag; code 6
-pub fn conflict_nest(reason: Option<&'static str>) {
-	if let Some(reason) = reason { println!("remux: inappropriate nesting flag (-n): {reason}"); }
-	else { println!("remux: nesting flag (-n) is inappropriate for this operation."); }
-	exit(6);
-}
-
-
 ///	tried to run a session command outside a session; code 7
 pub fn not_in_session(cmd: &'static str) {
 	println!("remux: '{cmd}' must be run from within a session");

src/flag.rs

@@ -1,6 +1,4 @@
 
-use pico_args::Arguments;
-
 type Flag = [&'static str;2];
 
 pub static DETACH: Flag		= ["-d", "--detach"];
@@ -11,41 +9,3 @@ pub static READ_ONLY: Flag	= ["-r", "--read-only"];
 pub static TARGET: Flag		= ["-t", "--target"];
 pub static VERSION: Flag	= ["-v", "--version"];
 
-pub struct Flags {
-	pub detached: bool,
-	pub nested: bool,
-	pub quiet: bool,
-	pub read_only: bool,
-	pub target: Option<String>,
-}
-
-impl Flags {
-
-	pub fn from(args: &mut Arguments) -> Flags {
-		let detached	= args.contains(DETACH);
-		let nested		= args.contains(NEST);
-		let quiet		= args.contains(QUIET);
-		let read_only	= args.contains(READ_ONLY);
-		let target		= args.value_from_str(TARGET).ok();
-
-		Flags {
-			detached,
-			nested,
-			quiet,
-			read_only,
-			target
-		}
-	}
-
-	pub fn clone(&self) -> Flags {
-		Flags {
-			detached: self.detached,
-			nested: self.nested,
-			quiet: self.quiet,
-			read_only: self.read_only,
-			target: None
-		}
-	}
-
-}
-

src/help.rs

@@ -13,7 +13,7 @@ println!("remux v{VERSION}
 Valerie Wolfe <sleeplessval@gmail.com>
 A command wrapper for tmux written in Rust.
 
-usage: remux [command] [<args>]
+usage: remux <command> [<args>]
 
 commands:
    help       Show help text for remux, a command, or a help topic.
@@ -25,7 +25,6 @@ commands:
 
    path       print session path (session)
    switch     switch to another session (session)
-   title      print session title (session)
 
 Use 'remux help <command>' to see detailed help text for each command.
 
@@ -102,7 +101,7 @@ flags:
    -n, --nest             Create the session inside another session.
    -t, --target <dir>     Sets the target directory for the new session."),
 
-		Some("p" | "path")
+		Some("root")
 		=>
 println!("remux path
 Print the session path (#{{session_path}}) to standard output.
@@ -127,16 +126,6 @@ flags:
    -r, --read-only        Attach the target session as read-only."),
 
 
-		Some("w" | "which" | "title")
-			=>
-println!("remux which
-Print the title of the current session.
-
-usage: remux which
-       remux w
-       remux title"),
-
-
 //	TOPIC HELP
 
 		Some("env" | "vars")
@@ -148,15 +137,10 @@ REMUX_ATTACH_SYMBOL
    by the 'list' command.
    Default: '*'
 
-REMUX_CURRENT_SYMBOL
-   Changes the symbol displayed to denote the current session
-   in the 'list' command.
-   Default: '>'
-
 REMUX_NEW_WINDOW
    Provides a default window name when creating a session with
    the 'new' command, if not empty.
-   Default: (unset)"),
+   Default: ''"),
 
 		//	not found
 		_	=>	error::no_help(topic.unwrap())

src/main.rs

@@ -1,3 +1,4 @@
+use std::env::{ set_var, var };
 
 use pico_args::Arguments;
 
@@ -6,11 +7,9 @@ mod env;
 mod error;
 mod flag;
 mod help;
-mod state;
 mod util;
 
 use help::{ help, version };
-use state::State;
 
 static VERSION: &str = env!("CARGO_PKG_VERSION");
 
@@ -29,44 +28,51 @@ fn main() {
 		return;
 	}
 
-	let mut state = State::new(&mut args);
+	let nesting = args.contains(flag::NEST);
-
+	let tmux_var = var("TMUX").ok();
-	let target = state.target();
+	if nesting {
-
+		if tmux_var.is_none() {
-	//	invoke subcommand function
+			error::not_nesting();
-	match target.as_deref() {
+		}
-		Some("help")
+		set_var("TMUX", "");
-			=>	help(&mut args),
-		None
-			=>	command::share::context_action(&state),
-
-		Some("a" | "attach")
-			=>	command::share::attach(&mut state),
-
-		Some("d" | "detach")
-			=>	command::share::detach(&mut state),
-
-		Some("h" | "has")
-			=>	command::share::has(&mut state),
-
-		Some("l" | "ls" | "list")
-			=>	command::share::list(&state),
-
-		Some("n" | "new")
-			=>	command::share::new(&mut state),
-
-		Some("p" | "path")
-			=>	command::session::path(&mut state),
-
-		Some("s" | "switch")
-			=>	command::session::switch(&mut state),
-
-		Some("t" | "title" | "which")
-			=>	command::session::title(state),
-
-		_
-			=>	error::no_subcommand(target.unwrap())
 	}
 
+	let subcommand = args.subcommand().unwrap();
+
+	//	invoke subcommand function
+	match subcommand.as_deref() {
+		Some("help")
+			=>	help(&mut args),
+
+		Some("a" | "attach")
+			=>	command::share::attach(&mut args),
+
+		Some("d" | "detach")
+			=>	command::share::detach(&mut args),
+
+		Some("h" | "has")
+			=>	command::share::has(&mut args),
+
+		None |
+		Some("l" | "ls" | "list")
+			=>	command::share::list(),
+
+		Some("n" | "new")
+			=>	command::share::new(&mut args),
+
+		Some("p" | "path")
+			=>	command::session::path(),
+
+		Some("s" | "switch")
+			=>	command::session::switch(&mut args),
+
+		_
+			=>	error::no_subcommand(subcommand.unwrap())
+	}
+
+	//	re-set TMUX var if we unset it for nest mode
+	if nesting {
+		set_var("TMUX", tmux_var.unwrap());
+	}
 }
 

src/state.rs

@@ -1,96 +0,0 @@
-use std::{
-	env,
-	path::PathBuf
-};
-
-use pico_args::Arguments;
-
-use crate::{
-	env::TMUX,
-	error,
-	flag::Flags,
-	util::{ find, session_name }
-};
-
-pub struct State<'a> {
-	pub args: &'a mut Arguments,
-	pub flags: Flags,
-
-	pub session: bool,
-	tmux_var: Option<String>,
-	pub title: Option<String>,
-
-	pub repository: Option<Repository>
-}
-
-impl State<'_> {
-
-	pub fn new(args: &mut Arguments) -> State {
-		let flags = Flags::from(args);
-		let tmux_var = env::var(TMUX).ok();
-		let session = tmux_var.is_some();
-		let title = if session { session_name() } else { None };
-		let repository = Repository::find();
-
-		State {
-			args,
-			flags,
-
-			session,
-			tmux_var,
-			title,
-
-			repository
-		}
-	}
-
-	pub fn nest_init(&self) {
-		if self.flags.nested {
-			if self.session { env::set_var(TMUX, ""); }		//	nesting & session	=> ok
-			else { error::not_nesting(); }					//	nesting & !session	=> error
-		} else if self.session { error::prevent_nest(); }	//	!nesting & session	=> error
-															//	!nesting & !session	=> ok
-	}
-
-	pub fn nest_deinit(&self) {
-		if self.flags.nested && self.session {
-			env::set_var(TMUX, self.tmux_var.as_ref().unwrap());
-		}
-	}
-
-	pub fn session_enforce(&self, cmd: &'static str) {
-		if !self.session { error::not_in_session(cmd); }
-	}
-
-	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();
-		if from_args.is_some() { return from_args; }
-		else if let Some(repository) = &self.repository { Some(repository.name.clone()) }
-		else {
-			error::missing_target();
-			None
-		}
-	}
-}
-
-
-pub struct Repository {
-	pub path: PathBuf,
-	pub name: String
-}
-
-impl Repository {
-	pub fn find() -> Option<Repository> {
-		let path = find(".git", env::current_dir().unwrap());
-		if let Some(path) = path {
-			let name = path.file_name().unwrap().to_string_lossy().to_string();
-			let inner = Repository {
-				path,
-				name
-			};
-			Some(inner)
-		} else { None }
-	}
-}
-

src/util.rs

@@ -1,6 +1,8 @@
 use std::{
+	env::current_dir,
 	io::{ stdout, IsTerminal },
-	path::PathBuf
+	path::PathBuf,
+	process::exit
 };
 
 use tmux_interface::{
@@ -10,19 +12,10 @@ use tmux_interface::{
 	variables::session::SessionsCtl
 };
 
-use crate::error;
+use crate::{
-
+	env,
-pub fn session_name() -> Option<String> {
+	error
-	let message = commands::DisplayMessage::new().print().message("#{session_name}");
+};
-
-	let result = Tmux::new().add_command(message).output();
-	if let Ok(output) = result {
-		let text = String::from_utf8(output.0.stdout);
-		if let Ok(title) = text {
-			Some(title[0..title.len() - 1].to_owned())
-		} else { None }
-	} else { None }
-}
 
 ///	return a Vec of all sessions or None
 pub fn get_sessions() -> Option<Vec<Session>> {
@@ -32,6 +25,19 @@ pub fn get_sessions() -> Option<Vec<Session>> {
 	} else { return None; }
 }
 
+///	show the tmux nest text if env var is not unset
+pub fn prevent_nest() {
+	if env::tmux() {
+		println!("To nest sessions, use the -n flag.");
+		exit(6);
+	}
+}
+
+///	enforce a command is being used in-session
+pub fn session_enforce(cmd: &'static str) {
+	if !env::tmux() { error::not_in_session(cmd); }
+}
+
 ///	check whether a target session exists
 pub fn session_exists<S: Into<String>>(target: S) -> bool {
 	let has_session = commands::HasSession::new()
@@ -47,12 +53,23 @@ pub fn terminal_enforce() {
 	if !stdout().is_terminal() { error::not_terminal(); }
 }
 
-///	recursively propagate up directories to find a child
+///	attempt to return the repo name or exit
-pub fn find(target: &'static str, path: PathBuf) -> Option<PathBuf> {
+pub fn repo_fallback() -> String {
-	if path.join(target).exists() { return Some(path); }
+	let repo = repo_root(current_dir().unwrap());
+	if repo.is_none() { error::missing_target(); }
 
+	let target = repo.unwrap().file_name().unwrap().to_string_lossy().to_string();
+	target
+}
+
+///	recursively attempt to find a git root directory
+pub fn repo_root(path: PathBuf) -> Option<PathBuf> {
+	//	if .git dir is found, return
+	if path.join(".git").exists() { return Some(path); }
+
+	//	otherwise, attempt to traverse
 	let parent = path.parent();
-	if let Some(parent) = parent { return find(target, parent.to_path_buf()) }
+	if let Some(parent) = parent { repo_root(parent.to_path_buf()) }
 	else { None }
 }