From db30dbfb004a6a7a9ad6e6987299a8400c1e3417 Mon Sep 17 00:00:00 2001
From: Raymond Pasco <ray@the.ug>
Date: Thu, 3 Mar 2016 17:10:16 -0500
Subject: [PATCH] Fix broken first-byte cases in ++lune

Was broken when first byte was a newline, and when first byte was the
only byte.
---
 jets/e/lune.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/jets/e/lune.c b/jets/e/lune.c
index d8c8404ca4..ac2cb8afee 100644
--- a/jets/e/lune.c
+++ b/jets/e/lune.c
@@ -20,14 +20,26 @@
         return u3m_error("noeol");
       }
 
+      if (pos_w == 0) {
+        if (u3r_byte(0, lub) == 10) {
+          return u3nc(u3_nul, lin);
+        } else {
+          return u3m_error("noeol");
+        }
+      }
+
       while (--pos_w) {
         if (u3r_byte(pos_w, lub) == 10) {
           lin = u3nc(u3qc_cut(3, (pos_w + 1), (end_w - pos_w - 1), lub), lin);
           end_w = pos_w;
-          continue;
         }
       }
 
+      if (u3r_byte(pos_w, lub) == 10) {
+        return u3nc(u3_nul,
+                    u3nc(u3qc_cut(3, pos_w, (end_w - pos_w), lub), lin));
+      }
+
       return u3nc(u3qc_cut(3, pos_w, (end_w - pos_w), lub), lin);
     }
   }