* Make NULs work for builtins
This switches from passing a c-string to output_stream_t::append to
passing a proper string.
That means a builtin that prints a NUL no longer crashes with "thread '' panicked
at 'String contained intermediate NUL character: ".
Instead, it will actually handle the NUL, even as an argument.
That means something like
`echo foo\x00bar` will now actually print a NUL instead of truncating
after the `foo` because we passed c-strings around everywhere.
The former is *necessary* for e.g. `string`, the latter is a change
that on the whole makes dealing with NULs easier, but it is a
behavioral change.
To restore the c-string behavior we would have to truncate arguments
at NUL.
See #9739.
* Use AsRef instead of trait bound
* docs: Add "Writing your own prompt" doc
* Remove a space from the "output"
* some teensy adjustments
* Address feedback
* envvar one more PWD
* More html warning
Prior to this change, parser_t exposed an environment_t, and Rust had to go
through that. But because we have implemented Environment in Rust, it is
better to just expose the native Environment from parser_t. Make that
change and update call sites.
The writembs macro was ported from C++, which attempted to detect when a NULL
termcap was used. However we have never gotten a bug report from this. Bravely
remove it.
The outputter code has a lot of checks that string capabilities are non-empty;
just enforce that at the curses layer so we can remove those checks.
Also remove some types and traits, replacing them with simple functions.
Per code review, we think that tparm does nothing when there are no parameters,
and it is safe to remove it, even though this is a break from C++. This
simplifies some code.
This commit introduces a fishconfig_print.css that contains special CSS styles that only apply when printing the fishconfig page. This is especially useful when the user wants to print out the key bindings.
This makes some simplifications to scoped_push and ScopeGuard:
1. ScopeGuard no longer uses ManuallyDrop; the memory management is now
trivial and no longer requires `unsafe`.
2. The functions `cancel` and `rollback` have been removed, as
these were unused. They can be added back later if needed.
3. `scoped_push` has been simplified in both signature and implementation.
4. `Projection` is no longer required and has been removed.
Also add some tests.
This should include the important info from the wiki.
We should try to find some recommendation for tools, or even an online
platform where people can submit translations without having to go
through all this setup
Mostly this tries to give logical header levels, so the "Fish Style
Guide" section is in the "Code Style" section
Also remove a few unimportant C++-centric sections - I'm not sure iwyu
even runs anymore, and cppcheck isn't great in my experience.
