vim-patch:8.2.3623: "$*" is expanded to "nonomatch"

Problem:    "$*" is expanded to "nonomatch".
Solution:   Only add "set nonomatch" when using a csh-like shell. (Christian
            Brabandt, closes vim/vim#9159, closes vim/vim#9153)
https://github.com/vim/vim/commit/8b8d829faf04fe3706c04f7f7000054acd3254e7

Cherry-pick a line from patch 8.2.0522.

1 files changed, 10 insertions, 4 deletions

diff --git a/src/nvim/os/shell.c b/src/nvim/os/shell.c
index dd44cb1ce7..b793b8f9c6 100644
--- a/src/nvim/os/shell.c
+++ b/src/nvim/os/shell.c
@@ -249,10 +249,16 @@ int os_expand_wildcards(int num_pat, char **pat, int *num_file, char ***file, in
     }
     STRCAT(command, ">");
   } else {
-    if (flags & EW_NOTFOUND) {
-      STRCPY(command, "set nonomatch; ");
-    } else {
-      STRCPY(command, "unset nonomatch; ");
+    STRCPY(command, "");
+    if (shell_style == STYLE_GLOB) {
+      // Assume the nonomatch option is valid only for csh like shells,
+      // otherwise, this may set the positional parameters for the shell,
+      // e.g. "$*".
+      if (flags & EW_NOTFOUND) {
+        STRCAT(command, "set nonomatch; ");
+      } else {
+        STRCAT(command, "unset nonomatch; ");
+      }
     }
     if (shell_style == STYLE_GLOB) {
       STRCAT(command, "glob >");