Create a line editor for filter and search strings

[fasterit]

Features required as per #1201:
[ ] cursor movement
[ ] inline scrolling
[ ] dynamic allocation of the text buffer (optional)
[ ] Unicode handling (multi-byte string support)

Can also be used for tab ("Screens") naming

[BenBE]

[ ] Unicode handling (multi-byte string support)

[fasterit]

Added that to the list at the top. In case we get more feature discussion we can then more easily maintain a canonical list.

[natoscott]

If it helps, redis(-cli) uses this embedded C library for line editing - works well in my experience, may provide a starting point here. Pretty sure it'd need work to handle Unicode, but perhaps some code/ideas can be used at least.

https://github.com/antirez/linenoise

[fasterit]

We could do a fork based on antirez/linenoise#187

[Explorer09]

What is "inline scrolling" of this feature request?

[BenBE]

What is "inline scrolling" of this feature request?

Imagine an input of 50 chars wide, but the text is 128 characters long. Inline scrolling means you can navigate that edit field (cursor movement support) to make different parts of the string visible.