Replace usearrows with iconchars

autoload/tagbar.vim

@@ -73,17 +73,8 @@ if s:ftype_out !~# 'detection:ON'
 endif
 unlet s:ftype_out
 
-if has('multi_byte') && has('unix') && &encoding == 'utf-8' &&
- \ (empty(&termencoding) || &termencoding == 'utf-8')
-    let s:icon_closed = '▶'
-    let s:icon_open   = '▼'
-elseif has('multi_byte') && (has('win32') || has('win64')) && g:tagbar_usearrows
-    let s:icon_closed = '▷'
-    let s:icon_open   = '◢'
-else
-    let s:icon_closed = '+'
-    let s:icon_open   = '-'
-endif
+let s:icon_closed = g:tagbar_iconchars[0]
+let s:icon_open   = g:tagbar_iconchars[1]
 
 let s:type_init_done    = 0
 let s:autocommands_done = 0

doc/tagbar.txt

@@ -421,21 +421,22 @@ Example:
 	let g:tagbar_foldlevel = 2
 <
 
-							*g:tagbar_usearrows*
-g:tagbar_usearrows~
-{Windows only}
-Default: 0
+							*g:tagbar_iconchars*
+g:tagbar_iconchars~
 
-Tagbar can display nice Unicode arrows instead of +/- characters as fold icons.
-However, Windows doesn't seem to be able to substitute in characters from
-other fonts if the current font doesn't support them. This means that you have
-to use a font that supports those arrows. Unfortunately there is no way to
-detect whether specific characters are supported in the current font. So if
-your font supports those arrows you have to set this option to make it work.
+Since the display of the icons used to indicate open or closed folds depends
+on the actual font used, different characters may be optimal for different
+fonts. With this variable you can set the icons to characters of your liking.
+The first character in the list specifies the icon to use for a closed fold,
+and the second one for an open fold.
 
-Example:
+Examples (don't worry if some the characters aren't displayed correctly, just
+choose other characters in that case):
 >
-	let g:tagbar_usearrows = 1
+	let g:tagbar_iconchars = ['▶', '▼']  (default on Linux and Mac OS X)
+	let g:tagbar_iconchars = ['▾', '▸']
+	let g:tagbar_iconchars = ['▷', '◢']
+	let g:tagbar_iconchars = ['+', '-']  (default on Windows)
 <
 
 							*g:tagbar_autoshowtag*

plugin/tagbar.vim

@@ -78,8 +78,13 @@ if !exists('g:tagbar_foldlevel')
     let g:tagbar_foldlevel = 99
 endif
 
-if !exists('g:tagbar_usearrows')
-    let g:tagbar_usearrows = 0
+if !exists('g:tagbar_iconchars')
+    if has('multi_byte') && has('unix') && &encoding == 'utf-8' &&
+     \ (empty(&termencoding) || &termencoding == 'utf-8')
+        let g:tagbar_iconchars = ['▶', '▼']
+    else
+        let g:tagbar_iconchars = ['+', '-']
+    endif
 endif
 
 if !exists('g:tagbar_autoshowtag')

syntax/tagbar.vim

@@ -11,35 +11,32 @@ if exists("b:current_syntax")
   finish
 endif
 
-if has('multi_byte') && has('unix') && &encoding == 'utf-8' &&
- \ (empty(&termencoding) || &termencoding == 'utf-8')
-    syntax match TagbarKind  '\([▶▼] \)\@<=[^-+: ]\+[^:]\+$'
-    syntax match TagbarScope '\([▶▼][-+# ]\)\@<=[^*]\+\(\*\?\(([^)]\+)\)\? :\)\@='
-
-    syntax match TagbarFoldIcon '[▶▼]\([-+# ]\)\@='
-
-    syntax match TagbarAccessPublic    '\([▶▼ ]\)\@<=+\([^-+# ]\)\@='
-    syntax match TagbarAccessProtected '\([▶▼ ]\)\@<=#\([^-+# ]\)\@='
-    syntax match TagbarAccessPrivate   '\([▶▼ ]\)\@<=-\([^-+# ]\)\@='
-elseif has('multi_byte') && (has('win32') || has('win64')) && g:tagbar_usearrows
-    syntax match TagbarKind  '\([▷◢] \)\@<=[^-+: ]\+[^:]\+$'
-    syntax match TagbarScope '\([▷◢][-+# ]\)\@<=[^*]\+\(\*\?\(([^)]\+)\)\? :\)\@='
-
-    syntax match TagbarFoldIcon '[▷◢]\([-+# ]\)\@='
-
-    syntax match TagbarAccessPublic    '\([▷◢ ]\)\@<=+\([^-+# ]\)\@='
-    syntax match TagbarAccessProtected '\([▷◢ ]\)\@<=#\([^-+# ]\)\@='
-    syntax match TagbarAccessPrivate   '\([▷◢ ]\)\@<=-\([^-+# ]\)\@='
-else
-    syntax match TagbarKind  '\([-+] \)\@<=[^-+: ]\+[^:]\+$'
-    syntax match TagbarScope '\([-+][-+# ]\)\@<=[^*]\+\(\*\?\(([^)]\+)\)\? :\)\@='
-
-    syntax match TagbarFoldIcon '[-+]\([-+# ]\)\@='
-
-    syntax match TagbarAccessPublic    '\([-+ ]\)\@<=+\([^-+# ]\)\@='
-    syntax match TagbarAccessProtected '\([-+ ]\)\@<=#\([^-+# ]\)\@='
-    syntax match TagbarAccessPrivate   '\([-+ ]\)\@<=-\([^-+# ]\)\@='
+let s:ic = g:tagbar_iconchars[0]
+if s:ic =~ '[]^\\-]'
+    let s:ic = '\' . s:ic
 endif
+let s:io = g:tagbar_iconchars[1]
+if s:io =~ '[]^\\-]'
+    let s:io = '\' . s:io
+endif
+
+let s:pattern = '\([' . s:ic . s:io . '] \)\@<=[^-+: ]\+[^:]\+$'
+execute "syntax match TagbarKind '" . s:pattern . "'"
+
+let s:pattern = '\([' . s:ic . s:io . '][-+# ]\)\@<=[^*]\+\(\*\?\(([^)]\+)\)\? :\)\@='
+execute "syntax match TagbarScope '" . s:pattern . "'"
+
+let s:pattern = '[' . s:ic . s:io . ']\([-+# ]\)\@='
+execute "syntax match TagbarFoldIcon '" . s:pattern . "'"
+
+let s:pattern = '\([' . s:ic . s:io . ' ]\)\@<=+\([^-+# ]\)\@='
+execute "syntax match TagbarAccessPublic '" . s:pattern . "'"
+let s:pattern = '\([' . s:ic . s:io . ' ]\)\@<=#\([^-+# ]\)\@='
+execute "syntax match TagbarAccessProtected '" . s:pattern . "'"
+let s:pattern = '\([' . s:ic . s:io . ' ]\)\@<=-\([^-+# ]\)\@='
+execute "syntax match TagbarAccessPrivate '" . s:pattern . "'"
+
+unlet s:pattern
 
 syntax match TagbarNestedKind '^\s\+\[[^]]\+\]$'
 syntax match TagbarComment    '^".*'