vim-patch:8.0.1518: error messages suppressed after ":silent! try"

Problem:    Error messages suppressed after ":silent! try". (Ben Reilly)
Solution:   Restore emsg_silent before executing :try. (closes vim/vim#2531)
https://github.com/vim/vim/commit/2be57331524e93da52a0663f4a334d21c05123bb

1 files changed, 13 insertions, 5 deletions

diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index ec4b16fbb0..7a7b20c35f 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -2217,11 +2217,19 @@ static char_u * do_one_cmd(char_u **cmdlinep,
     ea.arg = skipwhite(p);
   }
 
-  /*
-   * 7. Switch on command name.
-   *
-   * The "ea" structure holds the arguments that can be used.
-   */
+  // The :try command saves the emsg_silent flag, reset it here when
+  // ":silent! try" was used, it should only apply to :try itself.
+  if (ea.cmdidx == CMD_try && did_esilent > 0) {
+    emsg_silent -= did_esilent;
+    if (emsg_silent < 0) {
+      emsg_silent = 0;
+    }
+    did_esilent = 0;
+  }
+
+  // 7. Execute the command.
+  //
+  // The "ea" structure holds the arguments that can be used.
   ea.cmdlinep = cmdlinep;
   ea.getline = fgetline;
   ea.cookie = cookie;