How do I allow sentences to begin with lowercase letters?

Question

My spellchecker wants me to begin every sentence with a capital letter, i.e., it underlines lowercase characters after full stop. Can I make it stop?

Answer 1

There's the 'spellcapcheck' option; from the help:

Pattern to locate the end of a sentence. The following word will be checked to start with a capital letter. If not then it is highlighted with SpellCap hl-SpellCap (unless the word is also badly spelled).

The default value is [.?!]\_[\])'" \t]\+, but it may be set when loading a spell file (to accommodate the language's specific rules).

If you want to disable it, you should therefore use :set spellcapcheck= after using :set spell and :set spelllang. Unfortunately, there doesn't seem to be an autocmd to help you here, but you can use a mapping, e.g.:

nnoremap <Leader>ss :set spell!<CR>:set spellcapcheck=<CR>
nnoremap <Leader>sn :set spelllang=nl<CR>:set spellcapcheck=<CR>
nnoremap <Leader>se :set spelllang=en_gb<CR>:set spellcapcheck=<CR>
nnoremap <Leader>su :set spelllang=en_us<CR>:set spellcapcheck=<CR>
nnoremap <Leader>sd :set spelllang=de_de<CR>:set spellcapcheck=<CR>