(init_buffer): Fix PWD comment.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/buffer.c b/src/buffer.c
index 6acb2ae624a..b2d8ada9a97 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -4973,8 +4973,9 @@ init_buffer ()
   if (NILP (buffer_defaults.enable_multibyte_characters))
     Fset_buffer_multibyte (Qnil);
 
-  /* If PWD is accurate, use it instead of calling getwd.  This is faster
-     when PWD is right, and may avoid a fatal error.  */
+  /* If PWD is accurate, use it instead of calling getwd.  PWD is
+     sometimes a nicer name, and using it may avoid a fatal error if a
+     parent directory is searchable but not readable.  */
   if ((pwd = getenv ("PWD")) != 0
       && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1])))
       && stat (pwd, &pwdstat) == 0