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-rw-r--r--src/luaotfload-configuration.lua31
1 files changed, 28 insertions, 3 deletions
diff --git a/src/luaotfload-configuration.lua b/src/luaotfload-configuration.lua
index 1fe30fe..4ac8c50 100644
--- a/src/luaotfload-configuration.lua
+++ b/src/luaotfload-configuration.lua
@@ -134,6 +134,33 @@ local registered_loaders = {
tl2014 = "tl2014",
}
+local pick_fontloader = function (s)
+ local ldr = registered_loaders[s]
+ if ldr ~= nil and type (ldr) == "string" then
+ logreport ("log", 2, "conf", "Using predefined fontloader \"%s\".", ldr)
+ return ldr
+ end
+ local idx = stringfind (s, ":")
+ if idx and idx > 2 then
+ if stringsub (s, 1, idx - 1) == "context" then
+ local pth = stringsub (s, idx + 1)
+ pth = stringstrip (pth)
+ logreport ("log", 2, "conf", "Context base path specified at \"%s\".", pth)
+ if lfsisdir (pth) then
+ logreport ("log", 5, "conf", "Context base path exists at \"%s\".", pth)
+ return { "context", pth }
+ end
+ pth = kpseexpand_path (pth)
+ if lfsisdir (pth) then
+ logreport ("log", 5, "conf", "Context base path exists at \"%s\".", pth)
+ return { "context", pth }
+ end
+ logreport ("both", 0, "conf", "Context base path not found at \"%s\".", pth)
+ end
+ end
+ return nil
+end
+
--[[doc--
The ``post_linebreak_filter`` has been made the default callback for
@@ -468,10 +495,8 @@ local option_spec = {
in_t = string_t,
out_t = string_t,
transform = function (id)
- local ldr = registered_loaders[id]
+ local ldr = pick_fontloader (id)
if ldr ~= nil then
- logreport ("log", 2, "conf",
- "Using predefined fontloader \"%s\".", ldr)
return ldr
end
logreport ("log", 0, "conf",