[vim/vim] Cursor positions and movement in conceal (Issue #11681)

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Dec 8, 2022, 3:43:16 PM12/8/22

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Hello,

I am using conceallevel=2 and concealcursor=n (that is, conceal in normal mode).

Suppose, in the following example, that \alpha, \beta, are concealed to α, β, and we edit the line “1+α+β+1”.
Moving right by pushing ‘cursor right’ gives
|1+α+β+1
1|+α+β+1
1+|α+β+1
1+α|+β+1 (push ‘cursor right’ 6 times)
1+α+|β+1
1+α+β|+1 (push ‘cursor right’ 5 times)
1+α+β+|1, etc.
To surpass one character (as α), one needs to push the cursor 6 (!) times, etc.
Everyone would expect that pushing the cursor once moves over the displayed character α, that's the sense of concealing.
The position of the block cursor is strange as well:
1+\al|pha+2 is displayed as 1+α|+|2. Instead, the cursor should indicate the correct position 1+|α|+2.

It should be corrected.
Thank you!

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Dec 8, 2022, 3:52:51 PM12/8/22

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This is a known limitation of concealing. Cursor movements work on the actual characters and not on the visualization on top of it.

Since this is a duplicate of very old issues like #206 and #260, I am closing this ticket.

These days, virtual text may work better (but I must say I do not know).

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Dec 8, 2022, 3:52:55 PM12/8/22

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Closed #11681 as completed.

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