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-rw-r--r--macros/luatex/generic/lualibs/lualibs-io.lua10
1 files changed, 7 insertions, 3 deletions
diff --git a/macros/luatex/generic/lualibs/lualibs-io.lua b/macros/luatex/generic/lualibs/lualibs-io.lua
index a955262a31..6bf7a97bda 100644
--- a/macros/luatex/generic/lualibs/lualibs-io.lua
+++ b/macros/luatex/generic/lualibs/lualibs-io.lua
@@ -147,9 +147,12 @@ function io.copydata(source,target,action)
end
end
-function io.savedata(filename,data,joiner)
- local f = open(filename,"wb")
+function io.savedata(filename,data,joiner,append)
+ local f = open(filename,append and "ab" or "wb")
if f then
+ if append and joiner and f:seek("end") > 0 then
+ f:write(joiner)
+ end
if type(data) == "table" then
f:write(concat(data,joiner or ""))
elseif type(data) == "function" then
@@ -288,7 +291,8 @@ end
io.noflines = noflines
--- inlined is faster ... beware, better use util-fil
+-- inlined is faster ... beware, better use util-fil so these are obsolete
+-- and will go
local nextchar = {
[ 4] = function(f)