From 18fbdaeeab4bc1ed19bd3d7b3a0c0ded9cf79d4e Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Thu, 19 May 2022 06:47:33 +0800
Subject: fix(termopen): avoid ambiguity in URI when CWD is root dir (#16988)

---
 src/nvim/eval/funcs.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/nvim/eval')

diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index 683b035f5b..62fe2033af 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -10790,10 +10790,16 @@ static void f_termopen(typval_T *argvars, typval_T *rettv, FunPtr fptr)
   // "/home/foo/…" => "~/…"
   size_t len = home_replace(NULL, NameBuff, IObuff, sizeof(IObuff), true);
   // Trim slash.
-  if (IObuff[len - 1] == '\\' || IObuff[len - 1] == '/') {
+  if (len != 1 && (IObuff[len - 1] == '\\' || IObuff[len - 1] == '/')) {
     IObuff[len - 1] = '\0';
   }
 
+  if (len == 1 && IObuff[0] == '/') {
+    // Avoid ambiguity in the URI when CWD is root directory.
+    IObuff[1] = '.';
+    IObuff[2] = '\0';
+  }
+
   // Terminal URI: "term://$CWD//$PID:$CMD"
   snprintf((char *)NameBuff, sizeof(NameBuff), "term://%s//%d:%s",
            (char *)IObuff, pid, cmd);
-- 
cgit