3ed48995e6
In the markdown syntax, it’s actually valid to have trailing spaces (it creates a line break). Quoting https://en.wikipedia.org/wiki/Markdown > Two spaces at the end of a line > produce a line break.
85 lines
2.0 KiB
Lua
85 lines
2.0 KiB
Lua
local fn, vim = vim.fn, vim
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local b, bo = vim.b, vim.bo
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local fmt = string.format
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local common = require('hardline.common')
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local enabled = false
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local cache = ''
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local options = {
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c_langs = {'arduino', 'c', 'cpp', 'cuda', 'go', 'javascript', 'ld', 'php'},
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max_lines = 5000,
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}
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local function search(prefix, pattern)
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local line = fn.search(pattern, 'nw')
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if line == 0 then
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return ''
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end
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return fmt('[%s:%d]', prefix, line)
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end
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local function check_trailing()
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if vim.tbl_contains({'markdown'}, bo.filetype) then
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return ''
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end
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return search('trailing', [[\s$]])
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end
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local function check_mix_indent()
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local tst = [[(^\t* +\t\s*\S)]]
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local tls = fmt([[(^\t+ {%d,}\S)]], bo.tabstop)
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local pattern = fmt([[\v%s|%s]], tst, tls)
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return search('mix-indent', pattern)
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end
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local function check_mix_indent_file()
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local head_spc = [[\v(^ +)]]
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if vim.tbl_contains(options.c_langs, bo.filetype) then
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head_spc = [[\v(^ +\*@!)]]
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end
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local indent_tabs = fn.search([[\v(^\t+)]], 'nw')
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local indent_spc = fn.search(head_spc, 'nw')
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if indent_tabs == 0 or indent_spc == 0 then
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return ''
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end
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return fmt('[mix-indent-file:%d,%d]', indent_spc, indent_tabs)
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end
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local function check_conflict()
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local annotation = [[\%([0-9A-Za-z_.:]\+\)\?]]
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local raw_pattern = [[^\%%(\%%(<\{7} %s\)\|\%%(=\{7\}\)\|\%%(>\{7\} %s\)\)$]]
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if bo.filetype == 'rst' then
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raw_pattern = [[^\%%(\%%(<\{7} %s\)\|\%%(>\{7\} %s\)\)$]]
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end
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local pattern = fmt(raw_pattern, annotation, annotation)
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return search('conflict', pattern)
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end
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local function get_item()
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if not enabled then
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common.set_cache_autocmds('hardline_whitespace')
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enabled = true
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end
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if bo.readonly or not bo.modifiable then
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return ''
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end
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if fn.line('$') > options.max_lines then
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return ''
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end
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if b.hardline_whitespace then
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return cache
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end
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b.hardline_whitespace = true
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cache = table.concat({
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check_trailing(),
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check_mix_indent(),
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check_mix_indent_file(),
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check_conflict(),
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})
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return cache
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end
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return {
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get_item = get_item,
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}
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