From 3cd8daa162dc91b99ee1339b1332b9bdfc89878b Mon Sep 17 00:00:00 2001
From: mrmr1993 <mr_1993@hotmail.co.uk>
Date: Thu, 15 Mar 2018 19:41:58 +0000
Subject: [PATCH] Add support for get_pretitle and get_posttitle to tabline
 builder

---
 autoload/airline/extensions/tabline/builder.vim | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/autoload/airline/extensions/tabline/builder.vim b/autoload/airline/extensions/tabline/builder.vim
index 976b357..bdc166f 100644
--- a/autoload/airline/extensions/tabline/builder.vim
+++ b/autoload/airline/extensions/tabline/builder.vim
@@ -17,8 +17,23 @@ function! s:prototype.try_insert_tab(tab, pos, sep_size, force) dict
   let tab_title = self.get_title(a:tab)
   let self._remaining_space -= s:strchars(s:evaluate_tabline(tab_title)) + a:sep_size
   if a:force || self._remaining_space >= 0
-    call self.insert_section(self.get_group(a:tab), tab_title, a:pos)
+    let pos = a:pos
+    if has_key(self, "get_pretitle")
+      call self.insert_raw(self.get_pretitle(a:tab), pos)
+      let self._right_position += 1
+      let pos += 1
+    endif
+
+    call self.insert_section(self.get_group(a:tab), tab_title, pos)
     let self._right_position += 1
+    let pos += 1
+
+    if has_key(self, "get_posttitle")
+      call self.insert_raw(self.get_posttitle(a:tab), pos)
+      let self._right_position += 1
+      let pos += 1
+    endif
+
     return 1
   endif
   return 0