[Tracking] install script related issues

[mcornella]

By topic:

Backup of zshrc and default shell

• Some minor alteration concerning .zshrc.pre-oh-my-zsh #2499: Some minor alteration concerning .zshrc.pre-oh-my-zsh
• oh-my-zsh uninstall.sh issues - switch back to bash is unsatisfactory #3447: oh-my-zsh uninstall.sh issues - switch back to bash is unsatisfactory
• [Tracking] install script related issues #4355: just append the loading of OMZ to the zshrc file, leaving the rest of the file unchanged.
• installer: use timestamped backups to preserve all old zshrcs #4391: installer: use timestamped backups to preserve all old zshrcs
• Prevent change shell during setup #4261: Prevent shell change during setup
• Please, oh please, ask, or at least warn, about overwriting ~/.zshrc on installation #4390: Please, oh please, ask, or at least warn, about overwriting ~/.zshrc on installation PR

$PATH management

• install.sh: PATH= with no $PATH inside #2586: install.sh: PATH= with no $PATH inside
• Respect original PATH definitions on install #2589: Respect original PATH definitions on install
• Do not force PATH in the installer  #1359: Do not force PATH in the installer

Installed zsh check

• #4818: installer doesn't check if the zsh obtained from /etc/shells exists

Non-interactive install

• In the installer, add a way to "not" launch zsh after finishing #5002: add a way to not launch zsh after finishing

Other

• Installer: add ability to install from forked repos #3648: Installer: add ability to install from forked repos
• [Discuss] What should installer behavior be, esp wrt launching new shells? #4393: [Discuss] What should installer behavior be, esp wrt launching new shells?

[mcornella]

Tracking is now done on #5169. Closing.