[PATCH 0/3] add "call" command

[Rasmus Villemoes <rasmus.villemoes@prevas.dk>]

This adds a way to call a "function" defined in the environment with
arguments. I.e., whereas

  run foo

requires one to set the (shell or environment) variables referenced
from foo beforehand, with this one can instead do

  call foo arg1 arg2 arg3

and use $1... up to $9 in the definition of foo. $# is set so foo can
make decisions based on that, and ${3:-default} works as expected.

As I write in patch 2, it should be possible to get rid of the "call"
and simply allow

  foo arg1 arg2 arg3

i.e. if the search for a command named foo fails, try an environment
variable by that name and do it as "call". But that change of
behaviour, I think, requires a separate opt-in config knob, and can be
done later if someone actually wants that.

Rasmus Villemoes (3):
  cli_hush.c: refactor handle_dollar() to prepare for cmd_call
  cli_hush.c: add "call" command
  ut: add small hush tests

 cmd/Kconfig                 |  8 ++++
 common/cli_hush.c           | 93 +++++++++++++++++++++++++++++++++----
 configs/sandbox64_defconfig |  1 +
 configs/sandbox_defconfig   |  1 +
 include/test/suites.h       |  1 +
 test/cmd/Makefile           |  1 +
 test/cmd/hush.c             | 90 +++++++++++++++++++++++++++++++++++
 test/cmd_ut.c               |  6 +++
 8 files changed, 191 insertions(+), 10 deletions(-)
 create mode 100644 test/cmd/hush.c

-- 
2.23.0