From 8f58cc7df99e9f697ca3843886802ecab5cb8991 Mon Sep 17 00:00:00 2001
From: Frans Kaashoek <kaashoek@mit.edu>
Date: Fri, 12 Aug 2022 12:59:33 -0400
Subject: [PATCH] Cosmetic change (thanks Harry Porter)

---
 kernel/console.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/console.c b/kernel/console.c
index 1e8d355..39415d6 100644
--- a/kernel/console.c
+++ b/kernel/console.c
@@ -165,7 +165,7 @@ consoleintr(int c)
       // store for consumption by consoleread().
       cons.buf[cons.e++ % INPUT_BUF_SIZE] = c;
 
-      if(c == '\n' || c == C('D') || cons.e == cons.r+INPUT_BUF_SIZE){
+      if(c == '\n' || c == C('D') || cons.e-cons.r == INPUT_BUF_SIZE){
         // wake up consoleread() if a whole line (or end-of-file)
         // has arrived.
         cons.w = cons.e;