rust based bash completion

[ddiss]

The following changes since commit 84545807b44dd7ee8e2e1371e0a2049752b1d2bf:

  libiscsi_test_tool: cut and autorun scripts (2026-05-22 21:56:15 +1000)

are available in the Git repository at:

  https://github.com/ddiss/rapido.git bash_completion_rs

for you to fetch changes up to 5df0448cbe3de587f81621b121270205616bdaa3:

  tools/bash_completion: complete via bash-completion.rs (2026-05-29 18:42:48 +1000)

----------------------------------------------------------------
David Disseldorp (3):
      bash-completion.rs: rust based rapido command completion
      bash-completions.rs: add simple test coverage
      tools/bash_completion: complete via bash-completion.rs

 src/bin/bash-completion.rs | 294 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/bash_completion      |  75 +++++-------------------------------
 2 files changed, 303 insertions(+), 66 deletions(-)
 create mode 100644 src/bin/bash-completion.rs

[ddiss]

Looks like there's an issue with the old ubuntu-latest CI rustc 1.85, resulting in:

error[E0599]: no function or associated item named `from_utf8` found for type `str` in the current scope
   --> src/bin/bash-completion.rs:280:30
    |
280 |             assert_eq!(&str::from_utf8(&out).unwrap(), exp);
    |                              ^^^^^^^^^ function or associated item not found in `str`
    |
help: you are looking for the module in `std`, not the primitive type
    |
280 |             assert_eq!(&std::str::from_utf8(&out).unwrap(), exp);
    |                         +++++

[ddiss]

Looks like there's an issue with the old ubuntu-latest CI rustc 1.85, resulting in:
...

All it needed was a use std::str; for the test's from_utf8() call... guessing it's been moved from std into core since rustc 1.85(?)