Merge engines

[onaforeignshore]

User selectable rendering engine (generator)

This is a total replacement for the master branch.

General updates

• Both rendering engines are included Engines #471
  • generators/default is loaded if POWERLEVEL9K_GENERATOR="default" (or not defined)
  • generators/async is loaded if POWERLEVEL9K_GENERATOR="async" Async all the segments #344
• All segments have been moved into their own files and share the same calling line (serialize_segment) meaning one definition for both engines plugin structure #437
  • developer segments in segments/develop.zsh
  • network related segments in segments/network.zsh
  • system segments in segments/system.zsh
  • integration with todo.sh in segments/todo.zsh
  • versioning control systems in segments/vcs.zsh
  • virtualization segments in segments/virtual.zsh
  • vi_mode and cursor shape are only loaded when the async generator is used: [[ "${POWERLEVEL9K_GENERATOR}" == "async" ]] && source $script_location/segments/vi_mode.zsh || prompt_vi_mode() {} # not working in default!
• The main file is now only 142 lines long. This separation makes it easier to get to what you need to changes quicker, since there aren't hundreds of lines of code to search through.

Detailed updates

• generators/default now has a serialize_segments wrapper function to enable all segments to be written once for both generators
• prompt_battery has support for dynamic icon switching and dynamic background color changing Improve battery segment #373 / Battery #468
• prompt_dir has been updated with colored separators and bold/color on last directory, as well as configurable home Make home shorthand configurable for dir prompt #461
• vi_mode has support for changing cursor shape (which cannot be tested at present) vi_mode suddenly stopped working #319
• zshrc-example.zsh is nearly up to date with all the changes made
• any segment content can be printed in bold
• icons in the right prompt can be displayed on the left

TODO

• tests have to be updated for generators and for the following segments:
  • default generator
  • async generator
  • prompt_date returns the date
  • prompt_host returns the local host or SSH Improve context segment #459 / Host and user #467
  • prompt_time returns the time
  • prompt_user returns the username or root Improve context segment #459 / Host and user #467
  • prompt_dir for icons/background/home Make home shorthand configurable for dir prompt #461
• Merge pull requests
  • Make python virtualenv configurable. Make python virtualenv configurable. #345
  • update fontconfig icons, using awesome-terminal-fonts maps update fontconfig icons, using awesome-terminal-fonts maps #385 / Dealing with awesome-fontconfig codepoints #382
  • Add test for dir segment, truncate from right with whitespace in path Add test for dir segment, truncate from right with whitespace in path #425
  • Changing name of nerdfont option per Changing name of nerdfont option per #458 #466 / Name of nerd-font icon set is confusing #458
  • Merging Awesome Font Fix Merging Awesome Font Fix #472
• segments/* write function descriptions for missing ones
• make sure example file is 100% complete
• see if vi_mode can be supported in default engine
• add POWERLEVEL9K_RPROMPT_ICON_LEFT=true to default generator
• add bold segments to default generator
• fix default generator for _joined segments

[V1rgul]

Very nice initiative !

[onaforeignshore]

Because the call changed for segments, the _joined logic isn't working as planned. Busy debugging this at the moment.