From b779c6f7d73e5f70b2d886ed75e6e65217ad1e85 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Tue, 19 May 2020 19:12:10 -0700
Subject: checkin: found a large bug associated to ident resetting the buffer
 vector

---
 sys/libn/bufio.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'sys/libn/bufio.c')

diff --git a/sys/libn/bufio.c b/sys/libn/bufio.c
index 9bca46a..0a3c419 100644
--- a/sys/libn/bufio.c
+++ b/sys/libn/bufio.c
@@ -53,6 +53,11 @@ refill(io·Buffer *buf)
     buf->pos = buf->beg;
     buf->end = buf->pos + n;
 
+    // TEST: put a physical EOF byte at the end
+    // this would allow for an unget operation
+    if (n < buf->size)
+        *buf->end++ =  EOF;
+
     return n;
 }
 
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