Fixes #10751

Takes into account $ZLE_RPROMPT_INDENT and doesn't add the extra
space at the end so it doesn't bleed into the next line.

Closes #10656

Co-authored-by: Matthias Doering <matthias.doering@teamix.de>

Closes #4962

By default, `typeset` defines variables locally unless in the main scope.
This is specially bad when using `omz plugin load`, which happens inside
a function, so the declared variables don't continue being defined when
the function finishes and the main scope reappears.

Also cleaned up the code a bit

Fixes #10561

BREAKING CHANGE: For consistency, `ZSH_THEME_RANDOM_QUIET` now needs to
be `true` if you want to silence the "Random theme loaded" message in the
`random` theme.

The wiki specified that 1 or true was valid, while the code just
checked whether it was set to any value. Being more strict makes
sure that we're consistent with the rest of the Settings.

Fixes #10534

Closes #9396

Fixes fb86ec77

Fixes #10505

Closes #10474
Co-authored-by: Tom Payne <twpayne@gmail.com>

Closes #5992

Added the red dot (instead of the default `*`) if the branch is dirty.

The bira theme only supported git, now it supports mercurial as well. It
needed ito call `hg_prompt_info` and the `ZSH_THEME_HG_PROMPT_`
variables.

Closes #6631

Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>

The pygmalion and pygmalion-virtualenv themes unsafely handle git prompt information
which results in a double evaluation of this information, so a malicious git repository
could trigger a command injection if the user cloned and entered the repository.

A similar method could be used in the refined theme. All themes have been patched against this
vulnerability.