This is a small C program to compare text files side-by-side.
build.bat is a short batch/bash script to build the program.
It has no dependencies except C99 and POSIX extensions; simply gcc comparer.c will build the executable.
comparer.c and vector.h are the only source files needed to build comparer.
This should work with no extra incantations on Mac, Linux, Windows Linux Subsystem, and MinGW/Cygwin.
Give the comparer executable two filenames as command-line arguments.
The output is colored with ANSI colors and should work on most terminals, but probably shouldn't be saved to a file.
Like the standard diff tool, it finds a longest-common-subsequence between the two input files' lines, and
considers any lines not part of that common subsequence to be deletions/insertions.