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diff --git a/source/luametatex/source/libraries/avl/readme.txt b/source/luametatex/source/libraries/avl/readme.txt new file mode 100644 index 000000000..de5d4993e --- /dev/null +++ b/source/luametatex/source/libraries/avl/readme.txt @@ -0,0 +1,20 @@ +Remark + +Usage of the avl library (irr) showed up in pdfTeX when Hartmut added some functionality. It therefore +also ended up in being used in LuaTeX. The two files avl.c and avl.h come from pyavl and are in the +public domain: + + license: this package, pyavl, is donated to the public domain + author : Richard McGraw + email : dasnar@fastmail.fm + +In the pdfTeX/LuaTeX the files were just there but I could track them down to + + https://github.com/pankajp/pyavl + +where the dates indicate that nothing has changed in the meantime. In the copies used here I added the +information mentioned above. The files had some (experimental) code as well as optional testing on NULL +values. As I don't expect updates (the code has been okay for quite a while) I made the tests mandate +and removed the experimental code. + +Hans Hagen
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