A Lisp REPL as my main shell

CRANK

After Executing external commands, maybe the most common thing to do in a shell is operate on files.Interestingly, this is something Bash is very bad at. In particular, it falls on its face as soon as it hits files with whitespace (or worse, line breaks) or if we must deal with files nested in different sub-directories.The deep reason behind this weakness is because Bash pipelines can only pass text from process to process, and not structured data. This means that if we want to filter data, the file collection process (e.g. find) must return the file list as a string buffer: we just lost the structure of the file list. An alternative which is supported by some find versions is to output separate the file lists with \0, but then either the receiving program must support this, or you must use a version of xargs which also understands \0. In any case, it’s cumbersome and limiting.In Common Lisp, we don’t need to call processed to do any of the filtering, so don’t have this limitation.…