Re: [PATCH] t4002: fix "diff can read from stdin" syntax

"D. Ben Knoble via GitGitGadget" [off-list ref] writes:

From: "D. Ben Knoble" <redacted>

I noticed this test was producing output like

t4002-diff-basic.sh: test_expect_successdiff can read from stdin: not found

which is rather odd. Investigation shows an error of shell syntax:
foo'abc' is the same as fooabc to the shell. Perhaps obviously, this is
not a valid command for the test.

I am surprised this doesn't count as an error in the test, but that
accounts for it going unnoticed.

Signed-off-by: D. Ben Knoble <redacted>
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Nicely spotted.  Thanks.

Will queue.