Fix jobs.py: list index out of range (#5340)

* Update jobs.py

* Create fix-jobs-index.rst

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update fix-jobs-index.rst

* Update test_virtualenv_activator.py

* Update test_virtualenv_activator.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update test_virtualenv_activator.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* test: update venv activator test

* chore: update test xonsh

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Noorhteen Raja NJ <jnoortheen@gmail.com>

news/fix-jobs-index.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* <news item>
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* Jobs: fixed "index out of range" exception.
+
+**Security:**
+
+* <news item>

xonsh/jobs.py

@@ -344,9 +344,9 @@ def format_job_string(num: int) -> str:
     pos = "+" if tasks[0] == num else "-" if tasks[1] == num else " "
     status = job["status"]
     cmd = " ".join([" ".join(i) if isinstance(i, list) else i for i in job["cmds"]])
-    pid = job["pids"][-1]
+    pid = f"({job['pids'][-1]})" if job["pids"] else ""
     bg = " &" if job["bg"] else ""
-    return f"[{num}]{pos} {status}: {cmd}{bg} ({pid})"
+    return f"[{num}]{pos} {status}: {cmd}{bg} {pid}"
 
 
 def print_one_job(num, outfile=sys.stdout):