From 9f3059b7f4f3aabe5e6b5037908227afca1eb756 Mon Sep 17 00:00:00 2001
From: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Date: Sat, 14 Apr 2018 17:11:04 -0500
Subject: [PATCH] Add wrappers for fg/bg/wait to support job expansion

See commit 1c8bbfdb6d8eab6cb3e355f1cd32afd835cec961 for an alternative
approach, if this isn't desired.
---
 share/config.fish | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/share/config.fish b/share/config.fish
index 8c3779a3d..0196b7582 100644
--- a/share/config.fish
+++ b/share/config.fish
@@ -256,3 +256,35 @@ end
 # Invoke this here to apply the current value of fish_user_path after
 # PATH is possibly set above.
 __fish_reconstruct_path
+
+# Allow %n job expansion to be used with fg/bg/wait
+# `jobs` is the only one that natively supports job expansion
+function __fish_expand_pid_args
+    for arg in $argv
+        if string match -qr '^%\d+$' -- $arg
+            # set newargv $newargv (jobs -p $arg)
+            jobs -p $arg
+            if not test $status -eq 0
+                return 1
+            end
+        else
+            echo $arg
+        end
+    end
+end
+
+function __fish_expand_fg
+    builtin fg (__fish_expand_pid_args $argv)
+end
+
+function __fish_expand_bg
+    builtin bg (__fish_expand_pid_args $argv)
+end
+
+function __fish_expand_wait
+    builtin wait (__fish_expand_pid_args $argv)
+end
+
+alias fg __fish_expand_fg
+alias bg __fish_expand_bg
+alias wait __fish_expand_wait