Add just_executable() function

[bew]

Closes #774

I did not add tests because I couldn't find tests for the other functions, but if you need them I can add those.
EDIT: nevermind, I've found them, will try to make a test

[bew]

For the windows build, I'm not sure how to fix this:

---- misc::test_just_executable_function stdout ----
thread 'misc::test_just_executable_function' panicked at 'assertion failed: `(left == right)`: bad output

Diff < left / right > :
 Output {
<    stdout: "Executable path is: D:ajustjusttargetdebugjust.exe\n",
>    stdout: "Executable path is: D:\\a\\just\\just\\target\\debug\\just.exe\n",
     stderr: "",
     status: 0,
 }

', tests\test.rs:123:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Do I need to change the value returned by the function to make \ visible? Like using path.display() before returning or sth like that?

still new to rust

[casey]

Nice, thank you for the PR! I made comments regarding style and formatting, but otherwise this looks great.

[bew]

I changed the PR following your comments!
I don't know how you prefer to do reviews, if you want me mark your comments as resolved or not, so I didn't do it to be safe :)
(I usually prefer this anyway, so you can review the changes and mark-resolved your comments as you go)

Edit: windows test is not better 😕

[casey]

I don't know how you prefer to do reviews, if you want me mark your comments as resolved or not, so I didn't do it to be safe :)

Either way is fine with me!

Edit: windows test is not better 😕

Hmmm, try this:

printf '%s\n' '{{just_executable()}}'

The behavior of echo with respect to backslashes can be inconsistent. Printf is consistent across platforms, and does not interpret escape sequences in arguments after the first.

[bew]

I got some weird messages with that printf line, and I had a hard time finding the reason ^^ With errors ranging from Unexpected closing delimiter '}' to Unterminated string or a crash of the test function..

The solution was to not use a \n but a \\n to ensure the newline is not included in the justfile, but only in the recipe' output.

Let's see how Windows work now
🎉 🎉 CI is finally green 🎉 🎉

[casey]

Nice, merged! Thank you for the idea, and the implementation.

I just released v0.8.6 that contains this change.