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+% Update the ConTeXt filename cache if the system ls-R files are modified
+\startluacode
+ local addsuffix = file.addsuffix
+ local attributes = lfs.attributes
+ local difftime = os.difftime
+ local file_join = file.join
+ local getfirstreadablefile = caches.getfirstreadablefile
+ local gethashes = resolvers.gethashes
+ local hashed = caches.hashed
+ local ipairs = ipairs
+ local pcall = pcall
+ local resolve = resolvers.resolve
+ local time = os.time
+ local totime = utilities.parsers.totime
+
+ local stale = false
+ for _, tree in ipairs(gethashes()) do
+ local lsR_path = file_join(resolve(tree.name), "ls-R")
+ local lsR_time = attributes(lsR_path, "modification")
+
+ local hash = hashed(tree.name)
+ local path = getfirstreadablefile(addsuffix(hash, "lua"), "trees")
+
+ local state, blob = pcall(loadfile, path)
+ local hash_time
+
+ if blob then
+ local data = blob()
+ if data then
+ hash_time = time(totime(data.date .. " " .. data.time))
+ end
+ end
+
+ if lsR_time and hash_time and difftime(lsR_time, hash_time) > 0 then
+ stale = true
+ end
+ end
+
+ if stale then
+ resolvers.renewcache()
+ resolvers.load()
+ end
+\stopluacode
+
+% Set the default paper size
+\readsysfile{context-papersize.tex}{}{}