diff options
| -rw-r--r-- | lib/system.nim | 3 | ||||
| -rw-r--r-- | tests/stdlib/tnilecho.nim | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/lib/system.nim b/lib/system.nim index 65304941d..9925079c7 100644 --- a/lib/system.nim +++ b/lib/system.nim @@ -2334,7 +2334,8 @@ proc collectionToString[T: set | seq](x: T, b, e: string): string = var firstElement = true for value in items(x): if not firstElement: result.add(", ") - result.add($value) + if value.isNil: result.add "nil" + else: result.add($value) firstElement = false result.add(e) diff --git a/tests/stdlib/tnilecho.nim b/tests/stdlib/tnilecho.nim new file mode 100644 index 000000000..147b5e492 --- /dev/null +++ b/tests/stdlib/tnilecho.nim @@ -0,0 +1,2 @@ +var x = @["1", nil, "3"] +doAssert $x == "@[1, nil, 3]" |