fix(tmux): make tmux work as editor regardless of post:open hook

.centy/issues/5702708c-716d-4edc-ad72-c83bde1e514d.md

@@ -1,10 +1,10 @@
 ---
 # This file is managed by Centy. Use the Centy CLI to modify it.
 displayNumber: 52
-status: in-progress
+status: closed
 priority: 2
 createdAt: 2026-03-21T19:08:45.344228+00:00
-updatedAt: 2026-03-21T19:09:55.102321+00:00
+updatedAt: 2026-03-21T19:18:15.833046+00:00
 ---
 
 # tmux as editor: session creation only works when a post:open hook is configured

src/commands/open/mod.rs

@@ -83,7 +83,7 @@ pub fn cmd_open(issue_ref: Option<&str>, force_editor: bool, no_hooks: bool) ->
             }
         }
         (Some(cmd), None) => {
-            opener::open_in_editor(&workspace.path, cmd, config.editor.background)?;
+            opener::open_editor_or_terminal(&workspace.path, cmd, config.editor.background)?;
         }
         (None, Some(script)) => {
             eprintln!("Running post:open hook…");

src/opener/mod.rs

@@ -28,7 +28,10 @@ fn open_hook_in_auto_terminal(path: &Path, init_script: &str) -> Result<bool> {
     if which::which("wt").is_ok() && terminal::try_terminal_with_init(path, "wt", init_script)? {
         return Ok(true);
     }
-
+    if which::which("tmux").is_ok() && terminal::try_terminal_with_init(path, "tmux", init_script)?
+    {
+        return Ok(true);
+    }
     #[cfg(target_os = "macos")]
     {
         let candidates: &[(&str, &str)] = &[
@@ -45,7 +48,6 @@ fn open_hook_in_auto_terminal(path: &Path, init_script: &str) -> Result<bool> {
             // LLVM_COV_EXCL_STOP
         }
     }
-
     Ok(false)
 }
 
@@ -56,9 +58,7 @@ fn open_hook_in_auto_terminal(path: &Path, init_script: &str) -> Result<bool> {
 /// Returns an error if the editor or terminal command fails to spawn.
 pub fn open_with_hook(path: &Path, cmd: &str, init: &str, background: bool) -> Result<bool> {
     if terminal::try_terminal_with_init(path, cmd, init)? {
-        // LLVM_COV_EXCL_START
         return Ok(true);
-        // LLVM_COV_EXCL_STOP
     }
     open_in_editor(path, cmd, background)?;
     open_hook_in_auto_terminal(path, init)
@@ -74,7 +74,6 @@ pub fn open_in_editor(path: &Path, command: &str, background: bool) -> Result<()
     let path_str = path
         .to_str()
         .context("Workspace path contains non-UTF-8 characters")?;
-
     let cmd_str = if command.contains(" . ") || command.ends_with(" .") || command == "." {
         command.replacen(" .", &format!(" {path_str}"), 1)
     } else {
@@ -85,6 +84,17 @@ pub fn open_in_editor(path: &Path, command: &str, background: bool) -> Result<()
         .with_context(|| format!("Failed to open editor with command: {cmd_str}"))
 }
 
+/// Open `path` with `cmd`; uses terminal-specific logic if `cmd` is a known terminal,
+/// otherwise opens as an editor.
+/// # Errors
+/// Returns an error if the spawn or editor command fails.
+pub fn open_editor_or_terminal(path: &Path, cmd: &str, background: bool) -> Result<()> {
+    if !terminal::try_terminal_with_init(path, cmd, "")? {
+        open_in_editor(path, cmd, background)?;
+    }
+    Ok(())
+}
+
 #[cfg(test)]
 #[path = "opener_tests.rs"]
 mod tests;

src/opener/opener_tests.rs

@@ -25,3 +25,8 @@ fn test_open_in_editor_background() {
     let p = std::path::Path::new("/tmp/myproject");
     open_in_editor(p, "echo", true).unwrap();
 }
+#[test]
+fn test_open_editor_or_terminal_ide() {
+    let p = std::path::Path::new("/tmp/myproject");
+    open_editor_or_terminal(p, "echo .", false).unwrap();
+}