feate add motions dt dT df df ct cT cf cF and fix f/F and t/T not working on capital letters

[BrettKulp]

Add motions dt dT df df ct cT cf cF

The regular t/T and f/F now correctly work with capital letters

lmk if anything needs changed.

Also could make this logic that is similar in multiple motions more reusable if you want want to go that way. They are different enough that I wasn't sure if that would be the right thing to do

if (isPrintable(event) && !hasModifier(event)) {
const forward = deleteFind === "df" || deleteFind === "dt"
const till = deleteFind === "dt" || deleteFind === "dT"
const textarea = input.textarea()
const start = textarea.cursorOffset
const char = value(event)
findChar(textarea, char, forward, till)
if (textarea.cursorOffset !== start) {
const span = forward
? { start, end: textarea.cursorOffset + 1 }
: { start: textarea.cursorOffset, end: start + 1 }
const text = textarea.plainText.slice(span.start, span.end)
edit(() => {
deleteSpan(textarea, span)
if (text) setRegister({ text, linewise: false })
textarea.cursorOffset = Math.min(start, textarea.cursorOffset)
})
}
input.state.setLastFind({ char, forward, till })
input.state.clearPending()
event.preventDefault()
return true
}
input.state.clearPending()
event.preventDefault()
return true

[leohenon]

Thanks, the uppercase f/F/t/T fix looks good. Please split that into a separate PR so we can merge it independently.

For th rest, I don’t want to add separate pending states for each combination. I know the current operator handling is already pretty explicit, but these motions add another level of pending input, so I think this is the right point to introduce shared operator/motion abstraction instead.

Current issues:

• failed cf/ct should not enter insert mode
• findChar() moves the cursor before the edit snapshot, so undo cursor restore can be wrong

I’m going to take over this part and implement it around shared logic that computes the f/t span first. Thanks for the initial implementation/tests.

[BrettKulp]

Sounds good. Here is that PR #132 with f/F/t/T fix only. Thanks!