[synergy20]

Until you realize most of the time the code is loaded with Macros, ifdefs, cross-platform conditions(windows,macos,linux...), hacks for different versions of OSes/dependency/whatever, the real meat is hard to spot on, it's easy to get lost in those noises.

[er4hn]

Funny enough, this was a source of much criticism for OpenSSL as well, at least in the 1.0x series.