This screen scrapes GitHub Packages download counts from HTML for a
core formula.
It's useful when figuring out the difference between our analytics
numbers (which people can opt-out of) and our bottle downloads (which
people cannot due to the way GitHub Packages works).
These were introduced by typos and an incorrect assumption on the last
update of #15358. The last commit had been tested with a parameter, but
had not been re-tested *without* parameter.
Apologies for the error.
Resolves#15358
With this change, `brew shellenv` will accept a shell name parameter to
override its default output (based on `/bin/ps`) for advanced use cases
such as with dotfile templating and caching with
[twpayne/chezmoi](https://github.com/twpayne/chezmoi/discussions/2971).
When running under `fish`, this is the output:
```console
$ brew shellenv pwsh
[System.Environment]::SetEnvironmentVariable('HOMEBREW_PREFIX','/opt/homebrew',[System.EnvironmentVariableTarget]::Process)
[System.Environment]::SetEnvironmentVariable('HOMEBREW_CELLAR','/opt/homebrew/Cellar',[System.EnvironmentVariableTarget]::Process)
[System.Environment]::SetEnvironmentVariable('HOMEBREW_REPOSITORY','/opt/homebrew',[System.EnvironmentVariableTarget]::Process)
[System.Environment]::SetEnvironmentVariable('PATH',$('/opt/homebrew/bin:/opt/homebrew/sbin:'+$ENV:PATH),[System.EnvironmentVariableTarget]::Process)
[System.Environment]::SetEnvironmentVariable('MANPATH',$('/opt/homebrew/share/man'+$(if(${ENV:MANPATH}){':'+${ENV:MANPATH}})+':'),[System.EnvironmentVariableTarget]::Process)
[System.Environment]::SetEnvironmentVariable('INFOPATH',$('/opt/homebrew/share/info'+$(if(${ENV:INFOPATH}){':'+${ENV:INFOPATH}})),[System.EnvironmentVariableTarget]::Process)
$ brew shellenv
set -gx HOMEBREW_PREFIX "/opt/homebrew";
set -gx HOMEBREW_CELLAR "/opt/homebrew/Cellar";
set -gx HOMEBREW_REPOSITORY "/opt/homebrew";
set -q PATH; or set PATH ''; set -gx PATH "/opt/homebrew/bin" "/opt/homebrew/sbin" $PATH;
set -q MANPATH; or set MANPATH ''; set -gx MANPATH "/opt/homebrew/share/man" $MANPATH;
set -q INFOPATH; or set INFOPATH ''; set -gx INFOPATH "/opt/homebrew/share/info" $INFOPATH;
```
The specific case presented in the mentioned discussion could be
mitigated by an additional level of indirection (`{{ output "fish" "-c"
"'brew shellenv'" | trim }}`), that requires that the running system
have the target shells installed, when they are not strictly necessary
with `brew shellenv`.
- Make copying to `*_names.before.txt` the responsibility of `update.sh`
(unless the file doesn't exist at all). This provides the added
benefit of allowing the inspection of the before/after state after
running a `brew update` rather than both files always being identical
at this point.
- State `No changes to formulae or casks.` on macOS.
- Rename and flip `updated_formula_report` to `auto_update`; this naming
was confusing every time.
- Only display the `You can upgrade with...` messaging if we're not
auto-updating as sometimes it will be displayed before the commands it
references (e.g. `upgrade`, `outdated` or an `install` that proceeds
to upgrade these formulae).
Fixes https://github.com/Homebrew/brew/issues/15065
