[vlc-devel] [PATCH] lua/intf/cli: fix invalid concatenation of empty string

[Filip Roséen]

If an item lacks a name the value of "item.name" is nil, meaning that
it is an error trying to use it during concatenation.

These changes simply conditionally concatenates the leading " - " and the name
if the latter is not nil, otherwise an empty string is used in its place.

fixes #17545
---
 share/lua/intf/cli.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/share/lua/intf/cli.lua b/share/lua/intf/cli.lua
index 3c58b87..c631281 100644
--- a/share/lua/intf/cli.lua
+++ b/share/lua/intf/cli.lua
@@ -215,7 +215,8 @@ function playlist(name,client,arg)
     function playlist0(item,prefix)
         local prefix = prefix or ""
         if not item.flags.disabled then
-            local str = "| "..prefix..tostring(item.id).." - "..item.name
+            local str = "| "..prefix..tostring(item.id)..
+                            (item.name == nil and "" or " - "..item.name)
             if item.duration > 0 then
                 str = str.." ("..common.durationtostring(item.duration)..")"
             end
-- 
2.10.0