Depends on your definition of huge. On my computer, vim takes about a second to load a 100MB text file, 1.4 million lines - not as fast as less (although less'

Depends on your definition of huge. On my computer, vim takes about a second to load a 100MB text file, 1.4 million lines - not as fast as less (although less's search feature is slower). Vy's slower but it appears to load the file asynchronously, so at least you can start browsing while it's doing that. But 100MB is fifty times the sibling comment's 2MB for Atom... For the record, while Python's pure interpreter is always going to be slow at this type of thing, JS's overhead factor compared to C is small enough that it's certainly possible to write an editor in it that feels just as fast as vim - maybe faster in some cases, e.g. since JavaScript engines JIT compile regexes and C regex libraries generally don't, or by making relatively slow operations asynchronous/multithreaded (while vim is highly synchronous). Atom seems to be just badly designed.