Add nothing-but-bash to README.md

README.md

@@ -99,6 +99,31 @@ the name. In fact, I think we have our new theme song.
   Method directly from one matching the Method function signature in a
   callable, high-level library.
 
+* **Only bash completion planned.** Zsh, Powershell, and Fish have no
+  equivalent to `complete -C` (which allows any executable to provide
+  its own completion) This forces inferior dependencies on overly verbose
+  external "completer" scripts written in only those languages for
+  those specific shells. This dependency completely negates any
+  possibility of providing modular completers and composable commands
+  that carry their own completion logic. This one objective fact alone
+  should give every pause before opting to use one of these inferior
+  shells for their command line interactions. Bonzai commands leverage
+  this best-of-breed completion functionality of bash to provide an
+  unlimited number of completion methods and combinations. The
+  equivalent implementations, perhaps as an export collected from all
+  composed commands providing their shell equivalent of completion
+  scripts, would be preposterously large (even though `kubectl` requires
+  12637 lines of bash just for its basic completion). Bonzai uses Go
+  itself to manage that completion --- drawing on a rich collection of
+  completers included in the standard Bonzai module --- and provides
+  documented shortcut aliases when completion is not available (h|help,
+  for example). 
+
+* **Bonzai commands may default to `cmd.Shell` or `cmd.Help`** These
+  provide help information and optional interactive assistance
+  including tab completion in runtime environments that do not have
+  `complete -C foo foo` enabled. 
+
 ## Acknowledgements
 
 The <https://twitch.tv/rwxrob> community has been constantly involved
@@ -113,7 +138,7 @@ Copyright 2022 Robert S. Muhlestein (<mailto:rob@rwx.gg>)
 SPDX-License-Identifier: Apache-2.0
 
 "Bonzai" and "bonzai" are legal trademarks of Robert S. Muhlestein but
-can be used freely to refer to the cmdbox project
+can be used freely to refer to the Bonzai project
 <https://github.com/rwxrob/bonzai> without limitation. To avoid
 potential developer confusion, intentionally using these trademarks to
 refer to other projects --- free or proprietary --- is prohibited.