#187 files larger than 100MB still compressed (verified by many tests)

[Flying Hawk]

Since Stefan probably won't see new comments in closed ticket, I'm reposting this issue here, with more reference.

In source code, line 930 of FolderSync.cpp
the comment says "turn off compression for files bigger than 100MB"

However, even with the flag -mx0, 7z would still compress the file because -m0=lzma2 is present
Simplest solution would be to remove the -m0=lzma2 flag, since 7z uses lzma2 by default anyway.

Surely lzma2 refers to the compression algorithm.
It's on by default according to 7z documentation. Also consistent with the many tests I did
7z format only uses AES for encryption, no other choices

With -m0=lzma2 and -mx0, files get compressed with effect of -mx1
Without -p"password", "-mx0 -m0=lzma2" and "-mx1" produces the exact same output.
Without -m0=lzma2, -mx0 functions properly without compression. Encryption still works with -p"password"
These are verifiable with tests, as I have done.
There's no option for encryption algorithm when using -t7z, because 7z format only supports AES

references:
https://sevenzip.osdn.jp/chm/cmdline/switches/method.htm#MethodID
https://sevenzip.osdn.jp/chm/cmdline/switches/method.htm#LZMA2
https://en.wikipedia.org/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm
http://www.7-zip.org/7z.html
https://en.wikipedia.org/wiki/7z#Encryption

attached: screenshot from 7zip GUI