From 19569ad7d9072930dc66e640fa627b5e55dcf103 Mon Sep 17 00:00:00 2001
From: Piotr Piwko <piotr.piwko@gmail.com>
Date: Sat, 30 Jul 2016 21:39:37 +0200
Subject: [PATCH 1/2] Support for custom tag files

Provide support for g:ctrlp_tag_custom_files variable which optionally
may contains the list of tags files that shall be take into account
during tag searching in Tag mode.
---
 autoload/ctrlp/tag.vim | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/autoload/ctrlp/tag.vim b/autoload/ctrlp/tag.vim
index 31504dcc..d2ae4f37 100644
--- a/autoload/ctrlp/tag.vim
+++ b/autoload/ctrlp/tag.vim
@@ -137,7 +137,18 @@ fu! ctrlp#tag#id()
 endf
 
 fu! ctrlp#tag#enter()
-	let tfs = tagfiles()
+
+
+let s:tagfiles = tfs != [] ? filter(map(tfs, 'fnamemodify(v:val, ":p")'),
+\ 'filereadable(v:val)') : []
+endf
+
+fu! ctrlp#tag#enter()
+	if exists('g:ctrlp_tag_custom_files')
+		let tfs = g:ctrlp_tag_custom_files
+	else
+		let tfs = tagfiles()
+	endif
 	let s:tagfiles = tfs != [] ? filter(map(tfs, 'fnamemodify(v:val, ":p")'),
 		\ 'filereadable(v:val)') : []
 endf

From d12ac01762e99f9bc8ae5df9bda57c726d4e2b8c Mon Sep 17 00:00:00 2001
From: Piotr Piwko <piotr.piwko@gmail.com>
Date: Sat, 30 Jul 2016 21:55:54 +0200
Subject: [PATCH 2/2] Description for g:ctrlp_tag_custom_files

---
 doc/ctrlp.txt | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/doc/ctrlp.txt b/doc/ctrlp.txt
index 4cc6017d..75614b91 100644
--- a/doc/ctrlp.txt
+++ b/doc/ctrlp.txt
@@ -89,6 +89,9 @@ Overview:~
   |g:ctrlp_buftag_systemenc|....The encoding used for the ctags command.
   |g:ctrlp_buftag_types|........Add new filetypes and set the cmd arguments.
 
+  Tag mode:
+  |g:ctrlp_tag_custom_files|....Specified custom tag files
+
   Advanced options:
   |ctrlp_open_func|.............Use custom file opening functions.
   |ctrlp_status_func|...........Change CtrlP's two statuslines.
@@ -1351,7 +1354,19 @@ Examples: >
       \ 'args': '-f -',
       \ },
     \ }
-<
+
+
+----------------------------------------
+Tag mode options:~
+
+                                                   *'g:ctrlp_tag_custom_files'*
+Use this to set different tags files than standard tags variable. If it is set
+the tag searching consider only those specified files instead of global tags
+variable.
+
+Examples: >
+  let g:ctrlp_tag_custom_files = [".tags", "~/.vim/global_tags"]
+
 
 ===============================================================================
 CUSTOMIZATION                                             *ctrlp-customization*