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fix(lua): ensure vim.region truncates to buf range

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If vim.region receives a large range outside of the current buffer
bounds, it will not check the range ahead of time and loop until neovim
exhausts the system memory.

Fixes #14743
This commit is contained in:
Michael Lingelbach
2021-06-11 04:09:56 -04:00
parent 1df8a34a7b
commit cd3233c289
1 changed files with 5 additions and 0 deletions
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5
src/nvim/lua/vim.lua
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@@ -349,6 +349,11 @@ function vim.region(bufnr, pos1, pos2, regtype, inclusive)
vim.fn.bufload(bufnr) vim.fn.bufload(bufnr)
end end
-- check that region falls within current buffer
local buf_line_count = vim.api.nvim_buf_line_count(bufnr)
pos1[1] = math.min(pos1[1], buf_line_count - 1)
pos2[1] = math.min(pos2[1], buf_line_count - 1)
-- in case of block selection, columns need to be adjusted for non-ASCII characters -- in case of block selection, columns need to be adjusted for non-ASCII characters
-- TODO: handle double-width characters -- TODO: handle double-width characters
local bufline local bufline