Update manpage and completions.

Autogenerated by the [sponsors-maintainers-man-completions](https://github.com/Homebrew/brew/blob/HEAD/.github/workflows/sponsors-maintainers-man-completions.yml) workflow.

completions/bash/brew

@@ -1829,10 +1829,12 @@ _brew_readall() {
     -*)
       __brewcomp "
       --aliases
+      --arch
       --debug
       --eval-all
       --help
       --no-simulate
+      --os
       --quiet
       --syntax
       --verbose

completions/fish/brew.fish

@@ -1236,10 +1236,12 @@ __fish_brew_complete_arg 'rbenv-sync' -l verbose -d 'Make some output more verbo
 
 __fish_brew_complete_cmd 'readall' 'Import all items from the specified tap, or from all installed taps if none is provided'
 __fish_brew_complete_arg 'readall' -l aliases -d 'Verify any alias symlinks in each tap'
+__fish_brew_complete_arg 'readall' -l arch -d 'Read using the given CPU architecture. (Pass `all` to simulate all architectures.)'
 __fish_brew_complete_arg 'readall' -l debug -d 'Display any debugging information'
 __fish_brew_complete_arg 'readall' -l eval-all -d 'Evaluate all available formulae and casks, whether installed or not. Implied if `HOMEBREW_EVAL_ALL` is set'
 __fish_brew_complete_arg 'readall' -l help -d 'Show this message'
 __fish_brew_complete_arg 'readall' -l no-simulate -d 'Don\'t simulate other system configurations when checking formulae and casks'
+__fish_brew_complete_arg 'readall' -l os -d 'Read using the given operating system. (Pass `all` to simulate all operating systems.)'
 __fish_brew_complete_arg 'readall' -l quiet -d 'Make some output more quiet'
 __fish_brew_complete_arg 'readall' -l syntax -d 'Syntax-check all of Homebrew\'s Ruby files (if no `tap` is passed)'
 __fish_brew_complete_arg 'readall' -l verbose -d 'Make some output more verbose'

completions/zsh/_brew

@@ -1525,10 +1525,12 @@ _brew_rbenv_sync() {
 _brew_readall() {
   _arguments \
     '--aliases[Verify any alias symlinks in each tap]' \
+    '--arch[Read using the given CPU architecture. (Pass `all` to simulate all architectures.)]' \
     '--debug[Display any debugging information]' \
     '--eval-all[Evaluate all available formulae and casks, whether installed or not. Implied if `HOMEBREW_EVAL_ALL` is set]' \
     '--help[Show this message]' \
     '--no-simulate[Don'\''t simulate other system configurations when checking formulae and casks]' \
+    '--os[Read using the given operating system. (Pass `all` to simulate all operating systems.)]' \
     '--quiet[Make some output more quiet]' \
     '--syntax[Syntax-check all of Homebrew'\''s Ruby files (if no `tap` is passed)]' \
     '--verbose[Make some output more verbose]' \

docs/Manpage.md

@@ -551,6 +551,10 @@ This can be useful for debugging issues across all items when making
 significant changes to `formula.rb`, testing the performance of loading
 all items or checking if any current formulae/casks have Ruby issues.
 
+* `--os`:
+  Read using the given operating system. (Pass `all` to simulate all operating systems.)
+* `--arch`:
+  Read using the given CPU architecture. (Pass `all` to simulate all architectures.)
 * `--aliases`:
   Verify any alias symlinks in each tap.
 * `--syntax`:

manpages/brew.1

@@ -759,6 +759,14 @@ Note that older version symlinks will also be created so e\.g\. Ruby 3\.2\.1 wil
 Import all items from the specified \fItap\fR, or from all installed taps if none is provided\. This can be useful for debugging issues across all items when making significant changes to \fBformula\.rb\fR, testing the performance of loading all items or checking if any current formulae/casks have Ruby issues\.
 .
 .TP
+\fB\-\-os\fR
+Read using the given operating system\. (Pass \fBall\fR to simulate all operating systems\.)
+.
+.TP
+\fB\-\-arch\fR
+Read using the given CPU architecture\. (Pass \fBall\fR to simulate all architectures\.)
+.
+.TP
 \fB\-\-aliases\fR
 Verify any alias symlinks in each tap\.
 .