From 65fed2d784b4f99920497fe206607d94676ff085 Mon Sep 17 00:00:00 2001
From: shivakishore14 <shivakishore14@gmail.com>
Date: Fri, 28 Jun 2019 03:21:25 +0530
Subject: [PATCH] Create new line while pressing enter in repl.

Pressing Enter in repl should create new line instead of quiting the repl.
---
 compiler/main.v |  6 +++++-
 os/os.v         | 11 +++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/compiler/main.v b/compiler/main.v
index efb25a8795..ca0ecdd253 100644
--- a/compiler/main.v
+++ b/compiler/main.v
@@ -858,7 +858,11 @@ fn run_repl() []string {
 	mut lines := []string
 	for {
 		print('>>> ')
-		mut line := os.get_line().trim_space()
+		mut line := os.get_raw_line()
+		if line.trim_space() == '' && line.ends_with('\n') {
+			continue
+		}
+		line = line.trim_space()
 		if line == '' {
 			break
 		}
diff --git a/os/os.v b/os/os.v
index 594129fe4a..0dfd7a220b 100644
--- a/os/os.v
+++ b/os/os.v
@@ -383,6 +383,17 @@ pub fn get_line() string {
 	return tos(buf, nr_chars)
 }
 
+// get_raw_line returns a one-line string from stdin along with '\n' if there is any
+pub fn get_raw_line() string {
+	max := u64(256)
+	buf := malloc(int(max))
+	nr_chars := C.getline(&buf, &max, stdin)
+	if nr_chars == 0 {
+		return ''
+	}
+	return tos(buf, nr_chars)
+}
+
 pub fn user_os() string {
 	$if linux {
 		return 'linux'