I don't like having multiple flags do the same thing, but -u, -uu and -uuu
are much easier to remember, particularly with -uuu meaning "search
everything."
For example, when only a single file (or stdin) is being searched, then we
should be able to print directly to the terminal instead of intermediate
buffers. (The buffers are only necessary for parallelism.)
Closes#4.
We do this by avoiding using a RegexSet (*sigh*). In particular, file
type matching has much simpler semantics than gitignore files, so we don't
actually need to care which file type matched. Therefore, we can get away
with a single regex with a giant alternation.
I though plain `read` had usurped them, but when searching a very small
number of files, mmaps can be around 20% faster on Linux. It'd be really
unfortunate to leave that on the table.
Mmap searching doesn't support contexts yet, but we probably don't really
care. And duplicating that logic doesn't sound fun. Without contexts, mmap
searching is delightfully simple.
- Refactored interaction between CLI args and rest of xrep.
- Filling in a lot more options, including file type filtering.
- Fixing some bugs in globbing/ignoring.
- More documentation.
