Tests for vis specific editing features

The basic idea is to feed keyboard input to vis and compare the produced output with a known reference solution.

A test constitutes of 3 files:

• test.in the file/buffer content with which the editor is started
• test.keys a file containing the keyboard input as would normally be typed by a user
• test.ref a reference file at the end of the editing session

The toplevel shell script test.sh looks for these files in sub directories, feeds the keys to vis and compares the produces output.

Type make to run all tests.