new plugin: uniform shell information presentation plugin

[SethMilliken]

This plugin is designed to provide a uniform method of cleanly applying
style modifications to shell information included in the prompt.

Provided in this version are functions to add simple shell parameters
(as in man zshparam) with corresponding prefix and suffix
configuration settings, to allow for clean application of style
directives (i.e. color and spacing) as settings rather than directly
inline in your PROMPT.

EXAMPLE THEME USAGE:
...
PROMPT+="$(command_number)"
...
SHELL_PLUGIN[command_number_prefix]="%{$bg[white]%}%{$fg_bold[grey]%} "
SHELL_PLUGIN[command_number_suffix]=" %{$reset_color%}"

[sorin-ionescu]

You're wrapping shell prompt escapes for no good reason. It's overly complicated and has a performance hit due to the sub shells. %F{white}%n%f@%F{blue}%m%f is much simpler.

If you want your PROMPT definition to be simpler, catenate or type man zshmodules and study zstyle and zformat.

[SethMilliken]

@sorin-ionescu: alas, the dangers of naïve enthusiasm and of assuming the model from which i extended was sound. thank you for the information and the prescriptions.

[SethMilliken]

closing. going to rework this or my whole strategy for shell prompt escapes based on @sorin-ionescu's advice.