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fix(lsp): handle locations exceeding line length #30253

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Problem:
LSP spec [states](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#position)
that "if the character value is greater than the line length it defaults
back to the line length", but `locations_to_items` fails in that case.

Solution:
Adjust locations_to_items to follow the spec.

closes #28281
This commit is contained in:
Tristan Knight
2024-09-05 08:23:11 +01:00
committed by GitHub
parent 220b8aa6fe
commit 882a450a29
2 changed files with 39 additions and 19 deletions
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14
runtime/lua/vim/lsp/util.lua
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@@ -1795,8 +1795,18 @@ function M.locations_to_items(locations, offset_encoding)
local row = pos.line
local end_row = end_pos.line
local line = lines[row] or ''
local col = M._str_byteindex_enc(line, pos.character, offset_encoding)
local end_col = M._str_byteindex_enc(lines[end_row] or '', end_pos.character, offset_encoding)
local line_len = vim.fn.strcharlen(line)
local end_line = lines[end_row] or ''
local end_line_len = vim.fn.strcharlen(end_line)
-- LSP spec: if character > line length, default to the line length.
-- https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#position
local col = pos.character <= line_len
and M._str_byteindex_enc(line, pos.character, offset_encoding)
or line_len
local end_col = end_pos.character <= end_line_len
and M._str_byteindex_enc(end_line, end_pos.character, offset_encoding)
or end_line_len
table.insert(items, {
filename = filename,
lnum = row + 1,