From 4233046e3f62c89495b8e351b328401322296b56 Mon Sep 17 00:00:00 2001
From: Timothee Cour <timothee.cour2@gmail.com>
Date: Fri, 16 Nov 2018 04:09:19 -0800
Subject: [PATCH] make hex digit error msg more helpful (#9727)

---
 compiler/lexer.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/lexer.nim b/compiler/lexer.nim
index 76cb88297..635e6f08d 100644
--- a/compiler/lexer.nim
+++ b/compiler/lexer.nim
@@ -635,7 +635,8 @@ proc handleHexChar(L: var TLexer, xi: var int) =
     inc(L.bufpos)
   else:
     lexMessage(L, errGenerated,
-      "expected a hex digit, but found: " & L.buf[L.bufpos])
+      "expected a hex digit, but found: " & L.buf[L.bufpos] &
+        " ; maybe prepend with 0")
     # Need to progress for `nim check`
     inc(L.bufpos)