This speeds up subsequent `rbenv init -` executions for the user who
followed these instructions because the shell will no longer have to be
detected each time.
Since fish 3.10 at least, the current way of loading rbenv in `fish` is misbehaving, at least in some environments:
```
source: Error encountered while sourcing file '/var/folders/pj/jn249gcn7ddfrjzj2_9mxjhw0000gp/T//.psub.f0iJSWRByB':
source: No such file or directory
```
This changes the initialization to the method recommended by a `fish` developer here: https://github.com/fish-shell/fish-shell/issues/6613#issuecomment-586679958
Sometimes the command fails with a 'type: write error: Broken pipe'.
This is because 'head -1' only reads the first line, then exits.
If 'type' writes the second line after 'head -1' has already exited,
then the aforementioned error is triggered.
We fix this by buffering the entire output of 'type' before
invoking 'head -1'.
A malicious `.ruby-version` file in the current directory could inject
`../../../` into the version string and trigger execution of binaries
outside of `RBENV_ROOT/versions/`.
Fixes#977 OVE-20170303-0004
This suppressed any output when using RBENV_DEBUG=1 and does not really
hurt to have in the unlikely case that it should fail; you would get
two error messages now:
rbenv: ruby: command not found
rbenv: system version not found in PATH
Command `rbenv version-name > .ruby-version` will create an empty `.ruby-version` file
before running `rbenv-version-file`. This causes `rbenv-version-file` to return empty
string which in turn causes `rbenv-version-name` to return `system`.
Ensure size of `.ruby-version` is non-zero as a workaround.
Shell integration is not enabled by default. This means that, from all the
commands from `rbenv commands`, only "shell" won't work right away.
Replace "no such command" with a more descriptive message that points to
`rbenv init` instead.
The setenv function in fish shell has changed dramatically in
75600b6b53
It now conforms to the csh version, which takes at most two arguments.
In this init script, the form
setenv PATH prepend_something $PATH
had been used, which had too many arguments.
Since setenv isn't a native command in fish, a suitable replacement is
to use the "set -gx" command, which can consume multiple arguments.
Keeping rbenv-controlled variables to RBENV_* "namespace" helps with
discoverability (and tools like rbenv-env) but also consistency and a
very minor degree of safety/isolation from env impact.
This ensures that OLD_RBENV_VERSION is never exported. This makes the
implementation a little bit more complex, since more logic needs to be
pushed down into eval'd code.
The literal tilde in a PATH entry (e.g. `~/.rbenv/shims`) doesn't seem
to be supported by system `which` utility, but *does* seem to be
supported by `command -v` (used in `rbenv-which`) and `type -p`.
Therefore, we must strip away `~/.rbenv/shims` from PATH when looking up
executables for system Ruby, lest we risk infinite loop. We do so by
substituting any occurence of `~` in PATH with the value of `HOME`.
