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refactor(sign): move legacy signs to extmarks

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Problem:  The legacy signlist data structures and associated functions are
          redundant since the introduction of extmark signs.
Solution: Store signs defined through the legacy commands in a hashmap, placed
          signs in the extmark tree. Replace signlist associated functions.

Usage of the legacy sign commands should yield no change in behavior with the
exception of:
  - "orphaned signs" are now always removed when the line it is placed on is
    deleted. This used to depend on the value of 'signcolumn'.
  - It is no longer possible to place multiple signs with the same identifier
    in a single group on multiple lines. This will now move the sign instead.

Moreover, both signs placed through the legacy sign commands and through
|nvim_buf_set_extmark()|:
  - Will show up in both |sign-place| and |nvim_buf_get_extmarks()|.
  - Are displayed by increasing sign identifier, left to right.
    Extmark signs used to be ordered decreasingly as opposed to legacy signs.
This commit is contained in:
Luuk van Baal
2023-11-11 00:52:50 +01:00
parent ba58c6f8a4
commit c4afb9788c
33 changed files with 768 additions and 1899 deletions
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4
runtime/lua/vim/_meta/api.lua generated
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@@ -317,8 +317,8 @@ function vim.api.nvim_buf_get_commands(buffer, opts) end
--- @return integer[]
function vim.api.nvim_buf_get_extmark_by_id(buffer, ns_id, id, opts) end
--- Gets `extmarks` in "traversal order" from a `charwise` region defined by
--- buffer positions (inclusive, 0-indexed `api-indexing`).
--- Gets `extmarks` (including `signs`) in "traversal order" from a `charwise`
--- region defined by buffer positions (inclusive, 0-indexed `api-indexing`).
--- Region can be given as (row,col) tuples, or valid extmark ids (whose
--- positions define the bounds). 0 and -1 are understood as (0,0) and (-1,-1)
--- respectively, thus the following are equivalent: