Improved command editing experience

[jdfa]

I feel that command input is not really user-friendly. For instance, it doesn't allow marking and jumping between words.
Those features are really essential to input commands conveniently.
Same improvements can be also applied to rename command input and any other input request handler.

[UnrealView]

I agree, currently editing experience is very poor.
It should be great if the input bar can handle some common action in text editor like:

• ctrl-left/right arrow to navigate word by word
• ctrl-shift-left/right arrow to select word by word
• ctrl-delete/backspace to delete word by word
• ...

These example is common for Windows but maybe it can be configurable.

[ilyagr]

name command input and any other input request handler.

What does this mean?

It should be great if the input bar can handle some common action in text editor like

• Making <c-left> and <c-right> work is doable. I may or may not do it :). Currently, you can use <a-f> and <a-b> or cmap something else (but not ctrl-arrows, those are not yet supported as far as I can tell).
• Creating a notion of selection in the command-line would be a pretty big change. The command line does support emacs-style kill and yank if that helps.
• You can use <c-w> to delete a word and there are other related and useful commands in the docs. Unfortunately, it seems to be difficult to reliably bind <c-backspace> in a terminal app.

[joelim-work]

Mapping <c-left> and <c-right> is supported as of #1248

On my terminal backspace is mapped to <backspace2>, and ctrl+backspace is mapped to <backspace>, and the following works for me:

cmap <c-left> cmd-word-back
cmap <c-right> cmd-word
cmap <backspace> cmd-delete-unix-word
cmap <c-delete> cmd-delete-word

Note that cmap mappings apply for both editing commands, and when user input is requested (e.g. rename: and filter: ).

Regarding text selection, lf command line editing is based off GNU Readline, so I'm not sure whether it's worth implementing or whether it's in the correct spirit to do so.