1 - Check return values for every function that may fail.
3 - Add support for a default input string (when I will need it or if
6 - Fix the input shifting the line count by 1.
8 - Async line input? With fork(): I finally understood how it basically
9 works. mmap the buffer and fill it in one fork while the other
10 continues with the keyboard interaction?
12 - Option to output header title rather than the line itself, with
13 lines counted relatively from the beginning of the header. This
14 way, it can acts as a swiper-all: grep through multiple files, and
15 display the file content, with the line number, and output the line
16 number then the file name.
18 - Use this for io-grep
20 - Case insensitive match.