vim: use more robust highlighting stuff

vim/vimrc

@@ -103,8 +103,6 @@ fu _agw.file_type()
 endfu
 
 fu _agw.statusline_start()
-	hi clear StatusLine
-	hi StatusLine guibg=#0a0a0a guifg=#92ebf0
 	return ''
 endfu
 
@@ -134,6 +132,17 @@ fu _agw.setup_asm()
 	setlocal filetype=asm_ca65
 endfu
 
+fu _agw.set_color(scheme)
+	execute 'colorscheme' g:_agw.colors[a:scheme]
+	hi clear StatusLine
+	hi clear SpecialKey
+	hi clear NonText
+	hi StatusLine guibg=#0a0a0a guifg=#92ebf0
+	hi SpecialKey guifg=#7e4594
+	hi NonText guifg=#7e4594
+	hi Normal ctermbg=bg guibg=NONE
+endfu
+
 " Settings -------------------------------------------------------------------|
 
 " general settings (use :help for these)
@@ -356,10 +365,6 @@ else
 	set directory=$HOME/.vim/temp//
 endif
 
-let ruby_heredoc_syntax_filetypes = {
-\	"ninja": {"start": "__ninja__"},
-\}
-
 if _agw.use_rainbow != 0
 let rainbow_conf = {
 \	'guifgs': ['#ff533d', '#ff973d', '#ffe13d', '#91ff3d', '#3dffd8', '#3daeff', '#6a3dff', '#ee3dff'],
@@ -407,10 +412,12 @@ end
 
 syntax on
 
+set background=dark
+
 if _agw.cr_scheme == -2
 	colorscheme evening
 elseif _agw.cr_scheme != -1
-	execute 'colorscheme' _agw.colors[_agw.cr_scheme]
+	call _agw.set_color(_agw.cr_scheme)
 endif
 
 filetype on
@@ -449,8 +456,7 @@ au BufEnter * call _agw.close_empty()
 
 " set color randomly on buffer enter
 if _agw.cr_scheme == -1
-	au BufEnter * execute 'colorscheme'
-	\	_agw.colors[localtime() % len(_agw.colors)]
+	au BufEnter * call _agw.set_color(localtime() % len(_agw.colors))
 endif
 
 " .rkt → Racket