patch 8.0.1747: MS-Windows: term_start() does not set job_info() cmd

Problem:    MS-Windows: term_start() does not set job_info() cmd.
Solution:   Share the code from job_start() to set jv_argv.

src/channel.c

@@ -5563,8 +5563,6 @@ job_start(typval_T *argvars, char **argv_arg, jobopt_T *opt_arg)
 #endif
     if (argvars[0].v_type == VAR_STRING)
     {
-	char_u	*cmd_copy;
-
 	/* Command is a string. */
 	cmd = argvars[0].vval.v_string;
 	if (cmd == NULL || *cmd == NUL)
@@ -5572,18 +5570,9 @@ job_start(typval_T *argvars, char **argv_arg, jobopt_T *opt_arg)
 	    EMSG(_(e_invarg));
 	    goto theend;
 	}
-	/* Make a copy, parsing will modify "cmd". */
+
-	cmd_copy = vim_strsave(cmd);
+	if (build_argv_from_string(cmd, &argv, &argc) == FAIL)
-	if (cmd_copy == NULL
-		|| mch_parse_cmd(cmd_copy, FALSE, &argv, &argc) == FAIL)
-	{
-	    vim_free(cmd_copy);
 	    goto theend;
-	}
-	for (i = 0; i < argc; i++)
-	    argv[i] = (char *)vim_strsave((char_u *)argv[i]);
-	argv[argc] = NULL;
-	vim_free(cmd_copy);
     }
     else if (argvars[0].v_type != VAR_LIST
 	    || argvars[0].vval.v_list == NULL
@@ -5594,27 +5583,10 @@ job_start(typval_T *argvars, char **argv_arg, jobopt_T *opt_arg)
     }
     else
     {
-	list_T	    *l = argvars[0].vval.v_list;
+	list_T *l = argvars[0].vval.v_list;
-	listitem_T  *li;
-	char_u	    *s;
 
-	/* Pass argv[] to mch_call_shell(). */
+	if (build_argv_from_list(l, &argv, &argc) == FAIL)
-	argv = (char **)alloc(sizeof(char *) * (l->lv_len + 1));
-	if (argv == NULL)
 	    goto theend;
-	for (li = l->lv_first; li != NULL; li = li->li_next)
-	{
-	    s = get_tv_string_chk(&li->li_tv);
-	    if (s == NULL)
-	    {
-		for (i = 0; i < argc; ++i)
-		    vim_free(argv[i]);
-		goto theend;
-	    }
-	    argv[argc++] = (char *)vim_strsave(s);
-	}
-	argv[argc] = NULL;
-
 #ifndef USE_ARGV
 	if (win32_build_cmd(l, &ga) == FAIL)
 	    goto theend;

src/misc2.c

@@ -6513,4 +6513,66 @@ mch_parse_cmd(char_u *cmd, int use_shcf, char ***argv, int *argc)
     }
     return OK;
 }
+
+# if defined(FEAT_JOB_CHANNEL) || defined(PROTO)
+/*
+ * Build "argv[argc]" from the string "cmd".
+ * "argv[argc]" is set to NULL;
+ * Return FAIL when out of memory.
+ */
+    int
+build_argv_from_string(char_u *cmd, char ***argv, int *argc)
+{
+    char_u	*cmd_copy;
+    int		i;
+
+    /* Make a copy, parsing will modify "cmd". */
+    cmd_copy = vim_strsave(cmd);
+    if (cmd_copy == NULL
+	    || mch_parse_cmd(cmd_copy, FALSE, argv, argc) == FAIL)
+    {
+	vim_free(cmd_copy);
+	return FAIL;
+    }
+    for (i = 0; i < *argc; i++)
+	(*argv)[i] = (char *)vim_strsave((char_u *)(*argv)[i]);
+    (*argv)[*argc] = NULL;
+    vim_free(cmd_copy);
+    return OK;
+}
+
+/*
+ * Build "argv[argc]" from the list "l".
+ * "argv[argc]" is set to NULL;
+ * Return FAIL when out of memory.
+ */
+    int
+build_argv_from_list(list_T *l, char ***argv, int *argc)
+{
+    listitem_T  *li;
+    char_u	*s;
+
+    /* Pass argv[] to mch_call_shell(). */
+    *argv = (char **)alloc(sizeof(char *) * (l->lv_len + 1));
+    if (*argv == NULL)
+	return FAIL;
+    *argc = 0;
+    for (li = l->lv_first; li != NULL; li = li->li_next)
+    {
+	s = get_tv_string_chk(&li->li_tv);
+	if (s == NULL)
+	{
+	    int i;
+
+	    for (i = 0; i < *argc; ++i)
+		vim_free((*argv)[i]);
+	    return FAIL;
+	}
+	(*argv)[*argc] = (char *)vim_strsave(s);
+	*argc += 1;
+    }
+    (*argv)[*argc] = NULL;
+    return OK;
+}
+# endif
 #endif

src/proto/misc2.pro

@@ -111,4 +111,6 @@ void time_to_bytes(time_T the_time, char_u *buf);
 int has_non_ascii(char_u *s);
 void parse_queued_messages(void);
 int mch_parse_cmd(char_u *cmd, int use_shcf, char ***argv, int *argc);
+int build_argv_from_string(char_u *cmd, char ***argv, int *argc);
+int build_argv_from_list(list_T *l, char ***argv, int *argc);
 /* vim: set ft=c : */

src/terminal.c

@@ -5342,6 +5342,18 @@ term_and_job_init(
     job = job_alloc();
     if (job == NULL)
 	goto failed;
+    if (argvar->v_type == VAR_STRING)
+    {
+	int argc;
+
+	build_argv_from_string(cmd, &job->jv_argv, &argc);
+    }
+    else
+    {
+	int argc;
+
+	build_argv_from_list(argvar->vval.v_list, &job->jv_argv, &argc);
+    }
 
     if (opt->jo_set & JO_IN_BUF)
 	job->jv_in_buf = buflist_findnr(opt->jo_io_buf[PART_IN]);

src/testdir/test_terminal.vim

@@ -786,6 +786,12 @@ func Test_terminal_composing_unicode()
   let g:job = term_getjob(buf)
   call term_wait(buf, 50)
 
+  if has('win32')
+    call assert_equal('cmd', job_info(g:job).cmd[0])
+  else
+    call assert_equal(&shell, job_info(g:job).cmd[0])
+  endif
+
   " ascii + composing
   let txt = "a\u0308bc"
   call term_sendkeys(buf, "echo " . txt . "\r")

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1747,
 /**/
     1746,
 /**/