Extend enabled listchars, enable showbreak

plugin/settings.vim

@@ -5,8 +5,36 @@ set mouse=a
 
 " Enable visually highlighting listchars
 set list
-" Set visible chars for trailing white space and tabs
-set listchars=trail:·,tab:»»
+" Non breaking space:
+" * Circled Reverse Solidus (U+29B8, utf-8: E2 A6 B8)
+set listchars=nbsp:⦸
+" Trailing space:
+" * Middle Dot (U+00B7, utf-8: C2 B7)
+set listchars+=trail:·
+" Tab stop:
+" * White Right-Pointing Small Triangle (U+25B9, utf-8: E2 96 B9)
+" * Box Drawings Light Triple Dash Horizontal (U+2504, utf-8: E2 94 84)
+set listchars+=tab:▹┄
+" Line extended beyond screen when nowrap:
+" * Right-Pointing Double Angle Quotation Mark (U+00BB, utf-8: C2 BB)
+set listchars+=extends:»
+" Line preceded beyond screen when nowrap:
+" * Left-Pointing Double Angle Quotation Mark (U+00AB, utf-8: C2 AB)
+set listchars+=precedes:«
+
+" Wrap lines which are longer than screen width
+set wrap
+if has('linebreak')
+  " Break wrapped lines at a character in breakat
+  set linebreak
+  " Downwards Arrow With Tip Rightwards (U+21B3, utf-8: E2 86 B3)
+  let &showbreak='↳ '
+  " Use same highlight group as listchars for showbreak
+  set highlight+=@:SpecialKey
+endif
+
+" Don't add 2 spaces after end of sentence
+set nojoinspaces
 
 " TODO: spellcapcheck
 " TODO: virtualedit=block
@@ -40,15 +68,6 @@ if has('writebackup')
   set nowritebackup
 endif
 
-" Wrap to whole words
-set wrap
-if has('linebreak')
-  set linebreak
-endif
-
-" Don't add 2 spaces after end of sentence
-set nojoinspaces
-
 " Use Unix as standard file type
 set fileformats=unix,mac,dos