2 files changed, 14 insertions(+), 6 deletions(-)

M format/csv/reader.ha
M format/csv/writer.ha

@@ 13,9 13,13 @@ export type reader = struct {
 };
 
 // Creates a new [[reader]] with a specified delimiter.
-export fn newreader(in: io::handle, delim: rune) reader = reader {
-	in = in,
-	delim = delim,
+export fn newreader(in: io::handle, delim: rune) reader = {
+	if (delim == '"') abort("format::csv: Invalid delimiter");
+
+	return reader {
+		in = in,
+		delim = delim,
+	};
 };
 
 // Reads one record (a slice of strings) from a [[reader]].

@@ 13,9 13,13 @@ export type writer = struct {
 };
 
 // Creates a new [[writer]] with a specified delimiter.
-export fn newwriter(out: io::handle, delim: rune) writer = writer {
-	out = out,
-	delim = delim,
+export fn newwriter(out: io::handle, delim: rune) writer = {
+	if (delim == '"') abort("format::csv: Invalid delimiter");
+
+	return writer {
+		out = out,
+		delim = delim,
+	};
 };
 
 // Writes one record (a slice of strings) to a [[writer]], escaping