File luaotfload_varfonts.dif of Package texlive-specs-g

---
 texmf-dist/tex/luatex/luaotfload/fontloader-basics-gen.lua |   26 +++++++++++++
 texmf-dist/tex/luatex/luaotfload/fontloader-reference.lua  |   23 +++++++++++
 2 files changed, 49 insertions(+)

--- texmf-dist/tex/luatex/luaotfload/fontloader-basics-gen.lua
+++ texmf-dist/tex/luatex/luaotfload/fontloader-basics-gen.lua	2016-06-09 10:26:02.571996404 +0000
@@ -198,6 +198,7 @@ do
     -- standard context tree setup
 
     local cachepaths = kpse.expand_var('$TEXMFCACHE') or ""
+    local mktex = kpse.find_file('mktex.cnf','cnf') or ""
 
     -- quite like tex live or so (the weird $TEXMFCACHE test seems to be needed on miktex)
 
@@ -211,6 +212,31 @@ do
         cachepaths = kpse.expand_var('$VARTEXMF') or ""
     end
 
+    -- SUSE VARTEXFONTS
+
+    if mktex~="" then
+        local varfonts = "no"
+        local features = io.open(mktex,'r')
+        local cache
+        for line in features:lines() do
+            if string.find(line, 'MT_FEATURES=') then
+                if string.find(line, 'varfonts') then
+                    varfonts = "yes"
+                end
+                break
+            end
+       end
+       features:close()
+       cache = kpse.expand_var('$VARTEXFONTS')
+       if varfonts == "yes" and cache ~= "" then
+           if false == file.is_writable(cache) then
+               cachepaths = os.getenv("HOME") .. "/.cache/texmf/fonts"
+           else
+               cachepaths = cache
+           end
+       end
+    end
+
     -- and this is a last resort (hm, we could use TEMP or TEMPDIR)
 
     if cachepaths == "" then
--- texmf-dist/tex/luatex/luaotfload/fontloader-reference.lua
+++ texmf-dist/tex/luatex/luaotfload/fontloader-reference.lua	2019-05-10 09:32:16.562792353 +0000
@@ -4638,12 +4638,35 @@ if not caches.namespace or caches.namesp
 end
 do
  local cachepaths=kpse.expand_var('$TEXMFCACHE') or ""
+ local mktex=kpse.find_file('mktex.cnf','cnf') or ""
  if cachepaths=="" or cachepaths=="$TEXMFCACHE" then
   cachepaths=kpse.expand_var('$TEXMFVAR') or ""
  end
  if cachepaths=="" or cachepaths=="$TEXMFVAR" then
   cachepaths=kpse.expand_var('$VARTEXMF') or ""
  end
+ if mktex~="" then
+  local varfonts="no"
+  local features=io.open(mktex,'r')
+  local cache
+  for line in features:lines() do
+   if string.find(line, 'MT_FEATURES=') then
+    if string.find(line, 'varfonts') then
+     varfonts="yes"
+    end
+    break
+   end
+  end
+  features:close()
+  cache=kpse.expand_var('$VARTEXFONTS')
+  if varfonts=="yes" and cachepaths~="" then
+   if false == file.is_writable(cachepaths) then
+    cachepaths=os.getenv("HOME") .. "/.cache/texmf/fonts"
+   end
+  else
+   cachepaths=cache
+  end
+ end
  if cachepaths=="" then
   local fallbacks={ "TMPDIR","TEMPDIR","TMP","TEMP","HOME","HOMEPATH" }
   for i=1,#fallbacks do