fix: set TERM for bash, and zsh

To prevent duplicated bash/zsh prompt.

Author: tesuji

crates/completest-pty/src/lib.rs

@@ -113,7 +113,10 @@ PROMPT='%% '
     pub fn complete(&mut self, input: &str, term: &Term) -> std::io::Result<String> {
         let mut command = Command::new("zsh");
         command.arg("--noglobalrcs");
-        command.env("PATH", &self.path).env("ZDOTDIR", &self.home);
+        command
+            .env("PATH", &self.path)
+            .env("TERM", "dumb")
+            .env("ZDOTDIR", &self.home);
         let echo = false;
         comptest(command, echo, input, term, self.timeout)
     }
@@ -219,6 +222,7 @@ PS1='% '
         let inputrc_path = self.home.join(".inputrc");
         command
             .env("PATH", &self.path)
+            .env("TERM", "dumb")
             .env("INPUTRC", &inputrc_path)
             .args([OsStr::new("--rcfile"), self.config.as_os_str()]);
         let echo = !input.contains("\t\t");