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 README for cmdtest
 ==================
 
-Sometimes it would be nice to test Unix command line tools as black
-boxes. This is the start of a tool for doing that. Not written yet.
-
-Each test consists a directory with several fuiles, 
-some of which are optional:
-
-* `setup`: shell commands to run before the test, one per line
-* `teardown`: shell commands to run after the test, one per line
-* `args`: arguments to the command, i.e., everything beyond `argv[0]`,
-  one argument per line (`argv[0]` is given with `--command=CMD` option)
-* `stdin`: the contents is fed to the command via the standard input;
-  if not given, `/dev/null` is used instead
-* `stdout`: the expected output from stdout (default is no output)
-* `stderr`: the expected output from stderr (default is no output)
-* `exit`: one line giving the expected exit code of the command (zero, if
-  not given)
-* `verify`: shell commands to verify the output, one per line; if this
-  exists, then `stdout`, `stderr`, and `exit` are not checked automatically
-
-In addition to a single `setup` file, you can provide many shell scripts
-name `setup-*`, and these will be executed one by one. Ditto for `teardown`.
-
-Instead of a single `args` file, you can provide `args-*` files, and
-corresponding `stdout-*`, `stderr-*`, and `exit-*` files, or
-`verify-*` files. This allows you to share the setup and teardown
-scaffolding for several tests, without having to duplicate them between
-test directories.
-
-You may use the following environment variables:
-
-* `TESTDIR`: a temporary directory (created and removed automatically),
-  where you can create files indiscriminately
-
-A simple test:
-
-    sorts-correctly/
-        stdin # "xyz\nabc\ndef\n"
-        stdout # "abc\ndef\nxyz\n"
-        
-Invocation:
-
-    cmdtest --command=./mysort sorts-correctly
-
-A more complicated test:
-
-    sorts-correctly/
-        stdin-empty # ""
-        stdout-empty # ""
-        stdin-one-line # "abc\n"
-        stdout-one-line # "abc\n"
-        stdin-two-lines-sorted # "abc\ndef\n"
-        stdout-two-lines-sorted # "abc\ndef\n"
-        stdin-two-lines-unsorted # "def\nabc\n"
-        stdout-two-lines-unsorted # "abc\ndef\n"
-
-This will make cmdtest run four tests: it will run the command to 
-be tested with the standard input coming from `stdin-empty` and comparing
-the output with `stdout-empty`, and repeating that with the other pairs
-of files.
-
-If cmdtest finds a problem, it shows the "diff -u" output of the expected
-and actual outputs.
-
----
-
-    sorts-empty-file.stdin # ""
-    sorts-empty-file.stdout # ""
-    sorts-one-line.stdin # "abc\n"
-    sorts-one-line.stdout # "abc\n"
-    sorts-two-sorted-lines.stdin # "abc\ndef\n"
-    sorts-two-sorted-lines.stdout # "abc\ndef\n"
-    sorts-two-unsorted-lines.stdin # "def\nabc\n"
-    sorts-two-unsorted-lines.stdout # "abc\ndef\n"
-
----
-
 `cmdtest` black box tests Unix command line tools.
 Roughly, it is given a command line and input files, and the expected output,
 and it verifies that the command line produces the expected output.