patch 7.4.1382
Problem:    Can't get the job of a channel.
Solution:   Add ch_getjob().
diff --git a/src/eval.c b/src/eval.c
index cc7b945..bb9a4c5 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -501,6 +501,9 @@
 #endif
 #ifdef FEAT_CHANNEL
 static void f_ch_close(typval_T *argvars, typval_T *rettv);
+# ifdef FEAT_JOB
+static void f_ch_getjob(typval_T *argvars, typval_T *rettv);
+# endif
 static void f_ch_log(typval_T *argvars, typval_T *rettv);
 static void f_ch_logfile(typval_T *argvars, typval_T *rettv);
 static void f_ch_open(typval_T *argvars, typval_T *rettv);
@@ -8186,6 +8189,9 @@
 #endif
 #ifdef FEAT_CHANNEL
     {"ch_close",	1, 1, f_ch_close},
+# ifdef FEAT_JOB
+    {"ch_getjob",	1, 1, f_ch_getjob},
+# endif
     {"ch_log",		1, 2, f_ch_log},
     {"ch_logfile",	1, 2, f_ch_logfile},
     {"ch_open",		1, 2, f_ch_open},
@@ -10186,6 +10192,25 @@
 	channel_close(channel);
 }
 
+# ifdef FEAT_JOB
+/*
+ * "ch_getjob()" function
+ */
+    static void
+f_ch_getjob(typval_T *argvars, typval_T *rettv)
+{
+    channel_T *channel = get_channel_arg(&argvars[0]);
+
+    if (channel != NULL)
+    {
+	rettv->v_type = VAR_JOB;
+	rettv->vval.v_job = channel->ch_job;
+	if (channel->ch_job != NULL)
+	    ++channel->ch_job->jv_refcount;
+    }
+}
+# endif
+
 /*
  * "ch_log()" function
  */