[Tarantool-patches] [PATCH v3 2/3] box/console: handle empty output format

[Cyrill Gorcunov]

In case if output format is not specified we should exit
with more readable error message.

Fixes #4638

Signed-off-by: Cyrill Gorcunov <gorcunov at gmail.com>
---
 src/box/lua/console.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/box/lua/console.lua b/src/box/lua/console.lua
index a4a36c625..17e2c91b2 100644
--- a/src/box/lua/console.lua
+++ b/src/box/lua/console.lua
@@ -126,6 +126,9 @@ end
 
 local function parse_output(value)
     local fmt, opts
+    if not value then
+        return 'Specify output format: lua or yaml.'
+    end
     if value:match("([^,]+),([^,]+)") ~= nil then
         fmt, opts = value:match("([^,]+),([^,]+)")
     else
-- 
2.20.1