e2lib.join: verbose assert

Signed-off-by: Tobias Ulmer <tu@emlix.com>

diff --git a/generic/e2lib.lua b/generic/e2lib.lua
index e06c7990ff616f0ae1e5c100411e9cca174e3c5a..2df095d7df9b9da988e8d2e5c6688c4664a97bf4 100644 (file)
--- a/generic/e2lib.lua
+++ b/generic/e2lib.lua
@@ -758,7 +758,7 @@ function e2lib.join(p1, p2, ...)
 
     for i=1,#args do
         component = args[i]
-        assert(type(component) == "string")
+        assert(type(component) == "string", "join() arg not a string")
 
         if sepnext then
             -- If the previous or next component already