The test (at least locally) fails on the long shell line detection in
`master`, as the EDBG UART adapter drops chars when more than 64 bytes
are send at a time. This works around the issue:
- The line buffer in the test is reduced to 60 bytes, so that
overflowing it becomes possible with sending less than 64 bytes.
- The test script is adapted to exceed the shell buffer size by one
byte only (due to linefeed char), rather than significantly.
- Sending more than 64 bytes would result in the linefeed being
dropped by the EDBG adapter and the test failing
Finally, the shell buffer is no longer allocated on the stack and,
hence, the main stack size could be reduced a bit. The test still
passes on the Nucleo-F767ZI which is notorious in failing on tight
stacks due to the MPU stack guard - so the stack size reduction is
expected to work for all boards.
Ctrl-D was not caught in a special case so it was interpreted as
a standard character. Handle it now the same way like EOF and
terminate the shell instance.
Introduce optional user shell_post_readline_hook, shell_pre_command_hook, shell_post_command_hook.
Enable with USEMODULE=shell_hooks.
Calls user implemented *_hook functions if defined.
If implementation does not exist, nothing happens.
The intent is to make profiling of the shell command timings easier.
Test provided in tests/shell with USEMODULE=shell_hooks.
