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* Refactor pyenv plugin to use PATH

Closes #4086

Closes #3642

NOTE: The scrapper was previously included, but due to the website it scrapped
being dead it's no longer useful. See #3642 for the code.
Co-authored-by: Marc Cornellà <marc.cornella@live.com>

Enhance history alias

This fixes the old behavior which made it so all duplicates would be
deleted if the command history filled up with unique events.

> You should be sure to set the value of HISTSIZE to a larger number
> than SAVEHIST in order to give you some room for the duplicated
> events, otherwise this option will behave just like HIST_IGNORE_ALL_DUPS
> once the history fills up with unique events.

The option inc_append_history already has the same effect.

This commit changes the history alias into a function which puts
the passed arguments before `-l 1`. It also provides a temporary
workaround to the lack of a `history -c` command in zsh.

For more information see issues 739 and 789.

Refactor zsh_reload plugin

`source ~/.zshrc` is a bad practice, it doesn't make sure that the full
zsh session is reloaded and it may have side effects.

Use `$SHELL` as the path to zsh if it exists (this will fix edge cases
where the zsh used is not the first on $PATH). Otherwise, use `zsh`.

* Always try and start gpg-agent, with --use-standard-socket it will try and use a standard socket directory. It won't start multiple agents if agent is already running. In addition, XDG_RUNTIME_DIR isn't always set

* ssh socket if broken if --daemon is run again, so onky start if we don't have a socket

* Removed unnecessary allocation of GPG_SSH_AUTH_SOCK

* [rkj-repos] Make `hg prompt` check less strict

Move the `hg prompt` check inside the hg_prompt_info function so that
it returns an empty string if hg-prompt isn't installed.

Fixes #6743.

* [rkj-repos] Check for hg in `hg prompt` function

Co-authored-by: Profpatsch <mail@profpatsch.de>

Quick fix to the script not finding git due to hash.
Solves #6697.

Close #5268.

Closes #2552.

The git:// transport is completely unauthenticated. An attacker on the local or upstream network can easily man-in-the-middle an oh-my-zsh update and get remote code execution on your system. Only the https:// git transport should be used.

If @{u} is not defined, git rev-list will give an error; redirect
to stderr the error and deal with this case in what follows.

See https://bugs.debian.org/871816

Fixes #6592

* Check for  extension, and exit if not found. Addresses #6036

* Fix styles in rkj-repos.theme

[emotty] fix typo that resulted in math error