From fdf3114c04060f9c9e18fe65a924a0cd9b9be604 Mon Sep 17 00:00:00 2001
From: Valerie <sleeplessval@gmail.com>
Date: Wed, 17 Jul 2024 11:30:50 -0400
Subject: [PATCH] 'list' command now shows a symbol for the previous session

---
 man/remux.1          |  5 +++++
 src/command/share.rs | 27 ++++++++++++++++++++-------
 src/env.rs           | 11 ++++++-----
 3 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/man/remux.1 b/man/remux.1
index a9a2f12..c003f7a 100644
--- a/man/remux.1
+++ b/man/remux.1
@@ -135,6 +135,11 @@ Default: '>'
 .It Ev REMUX_NEW_WINDOW
 Provides a default windows name when creating a new session. Unused if empty.
 Default: (unset)
+.It Ev REMUX_PREVIOUS_SYMBOL
+Changes the symbol displayed for the previous session in the
+.Ic list
+command.
+Default: '-'
 .It Ev REMUX_REPO_FILE
 The filename to match on when trying to find the root of a repository.
 Default: '.git'
diff --git a/src/command/share.rs b/src/command/share.rs
index 3acec88..14c502b 100644
--- a/src/command/share.rs
+++ b/src/command/share.rs
@@ -9,11 +9,19 @@ use tmux_interface::{
 };
 
 use crate::{
-	env::{ self, env_var },
+	env::{
+		self,
+		env_var,
+		SYMBOL_ATTACH, SYMBOL_CURRENT, SYMBOL_PREV
+	},
 	error,
 	flag,
 	state::State,
-	util::{ self, NULL }
+	util::{
+		self,
+		message,
+		MSG_PREVIOUS, NULL
+	}
 };
 
 pub fn attach(state: &mut State) {
@@ -127,8 +135,9 @@ pub fn list(state: &mut State) {
 	}
 
 	//	get attached session symbol
-	let attach_symbol	= env_var(env::ATTACH_SYMBOL);
-	let current_symbol	= env_var(env::CURRENT_SYMBOL);
+	let attach_symbol	= env_var(SYMBOL_ATTACH);
+	let current_symbol	= env_var(SYMBOL_CURRENT);
+	let prev_symbol		= env_var(SYMBOL_PREV);
 
 	//	pretty print session list
 	if !state.flags.quiet { println!("sessions:"); }
@@ -141,13 +150,17 @@ pub fn list(state: &mut State) {
 			let id = session.id.unwrap();
 
 			let attached = session.attached.unwrap_or(0) > 0;
-			let current = Some(name.clone()) == state.title;
+
+			let compare = Some(name.clone());
+			let marker =
+				if compare == state.title { current_symbol.clone() }
+				else if compare == message(MSG_PREVIOUS) { prev_symbol.clone() }
+				else { " ".to_string() };
 
 			println!(
-				" {current} {name}{reset} ({bold}{blue}{id}{reset}) {bold}{green}{attach}{reset}",
+				" {marker} {name}{reset} ({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),
diff --git a/src/env.rs b/src/env.rs
index 208fa64..9898884 100644
--- a/src/env.rs
+++ b/src/env.rs
@@ -2,12 +2,13 @@ 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 REPO_FILE:		EnvVar	= ("REMUX_REPO_FILE", ".git");
+pub const NEW_WINDOW_NAME:	EnvVar	= ("REMUX_NEW_WINDOW", "");
+pub const REPO_FILE:		EnvVar	= ("REMUX_REPO_FILE", ".git");
+pub const SYMBOL_ATTACH:	EnvVar	= ("REMUX_ATTACH_SYMBOL", "*");
+pub const SYMBOL_CURRENT:	EnvVar	= ("REMUX_CURRENT_SYMBOL", ">");
+pub const SYMBOL_PREV:		EnvVar	= ("REMUX_PREVIOUS_SYMBOL", "-");
 
-pub static TMUX: &str				= "TMUX";
+pub const TMUX: &str				= "TMUX";
 
 ///	get or default an environment variable
 pub fn env_var(envvar: EnvVar) -> String {