From 2b0c143808c1a9504871a0f73d8de32d109c218c Mon Sep 17 00:00:00 2001
From: Frank LENORMAND <lenormf@gmail.com>
Date: Fri, 20 Jul 2018 09:47:26 +0300
Subject: [PATCH] src: Allow face names to contain an underscore

Closes #2229
---
 src/face_registry.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/face_registry.cc b/src/face_registry.cc
index 5a7a8df6..13d90558 100644
--- a/src/face_registry.cc
+++ b/src/face_registry.cc
@@ -92,7 +92,7 @@ void FaceRegistry::add_face(StringView name, StringView facedesc, bool override)
 
     if (name.empty() or is_color_name(name) or
         std::any_of(name.begin(), name.end(),
-                    [](char c){ return not isalnum(c); }))
+                    [](char c){ return not is_word(c); }))
         throw runtime_error(format("invalid face name: '{}'", name));
 
     if (name == facedesc)