From c9e062b3ff9ce740116f28d31d7988fe3f02d2a0 Mon Sep 17 00:00:00 2001
From: Katsuma Narisawa <face.the.music721@gmail.com>
Date: Fri, 16 Jul 2021 15:47:27 +0900
Subject: [PATCH 1/2] Delete trailing new line character from pasted text

---
 src/matrix.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/matrix.ts b/src/matrix.ts
index c0fb61c3..c29cdc50 100644
--- a/src/matrix.ts
+++ b/src/matrix.ts
@@ -154,9 +154,10 @@ export function split<T>(
   csv: string,
   transform: (value: string) => T,
   horizontalSeparator = "\t",
-  verticalSeparator: string | RegExp = /\r\n|\n|\r/
+  verticalSeparator = /\r\n|\n|\r/
 ): Matrix<T> {
   return csv
+    .replace(new RegExp('(' + verticalSeparator.source + ')$'), '') // delete trailing new line character
     .split(verticalSeparator)
     .map((row) => row.split(horizontalSeparator).map(transform));
 }

From acc08b90c1d9e95d2aa04dd19eb6ec80ddd3042a Mon Sep 17 00:00:00 2001
From: Katsuma Narisawa <katsuma.narisawa@gmail.com>
Date: Sat, 21 Aug 2021 10:50:47 +0900
Subject: [PATCH 2/2] Allow string verticalSeparator

---
 src/matrix.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/matrix.ts b/src/matrix.ts
index c29cdc50..a0304ecc 100644
--- a/src/matrix.ts
+++ b/src/matrix.ts
@@ -154,11 +154,12 @@ export function split<T>(
   csv: string,
   transform: (value: string) => T,
   horizontalSeparator = "\t",
-  verticalSeparator = /\r\n|\n|\r/
+  verticalSeparator: string | RegExp = /\r\n|\n|\r/
 ): Matrix<T> {
+  const verticalSeparatorRegExp = typeof (verticalSeparator) === 'string' ? new RegExp(verticalSeparator) : verticalSeparator
   return csv
-    .replace(new RegExp('(' + verticalSeparator.source + ')$'), '') // delete trailing new line character
-    .split(verticalSeparator)
+    .replace(new RegExp('(' + verticalSeparatorRegExp.source + ')$'), '') // delete trailing new line character
+    .split(verticalSeparatorRegExp)
     .map((row) => row.split(horizontalSeparator).map(transform));
 }