[Bug 2281] sh: behavior of backslash star inside parameter expansion

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=2281

--- Comment #1 from Denys Vlasenko <vda.linux at googlemail.com>  ---
Fixed in git. While at it, found and quashed two more bugs.
However, quoted version:

FOO="a*b\\*c"; echo "${FOO//\\*/-backslashstar-}"

is still broken, and is _hard_ to fix.

There is now a testcase for it:
Go to busybox/shell/ash_test in buld tree and run "run-all".
Examine ash-vars-var_bash4.tests.fail to see quoted expansion error.

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