move colorization to ``pre_linebreak_filter``

also introduces a config option: *color_callback* that
controls which callback will be activated. set it to
pre_output_filter to restore the previous behavior.

1 files changed, 6 insertions, 5 deletions

diff --git a/luaotfload.dtx b/luaotfload.dtx
index fb57462..d8d1863 100644
--- a/luaotfload.dtx
+++ b/luaotfload.dtx
@@ -1182,11 +1182,12 @@ and the derived files
 luaotfload                  = luaotfload or {}
 local luaotfload            = luaotfload
 
-config                      = config or { }
-config.luaotfload           = config.luaotfload or { }
-config.luaotfload.resolver  = config.luaotfload.resolver  or "normal"
-config.luaotfload.definer   = config.luaotfload.definer   or "patch"
-config.luaotfload.loglevel  = config.luaotfload.loglevel  or 1
+config                            = config or { }
+config.luaotfload                 = config.luaotfload or { }
+config.luaotfload.resolver        = config.luaotfload.resolver  or "normal"
+config.luaotfload.definer         = config.luaotfload.definer   or "patch"
+config.luaotfload.loglevel        = config.luaotfload.loglevel  or 1
+config.luaotfload.color_callback  = config.luaotfload.color_callback  or "pre_linebreak_filter"
 --luaotfload.prefer_merge     = config.luaotfload.prefer_merge or true
 
 luaotfload.module = {