Bug fix: Don't mistake 'D' for 'd' when &ignorecase is set

This is a bug fix for the previous commit,
still related to xolox/vim-easytags#92 :-)

Author: xolox

README.md

@@ -32,7 +32,7 @@ from the source code of the miscellaneous scripts using the Python module
 <!-- Start of generated documentation -->
 
 The documentation of the 95 functions below was extracted from
-19 Vim scripts on April  1, 2015 at 23:32.
+19 Vim scripts on April  1, 2015 at 23:39.
 
 ### Asynchronous Vim script evaluation
 

autoload/xolox/misc.vim

@@ -4,4 +4,4 @@
 " Last Change: April 1, 2015
 " URL: http://peterodding.com/code/vim/misc/
 
-let g:xolox#misc#version = '1.17.3'
+let g:xolox#misc#version = '1.17.4'

autoload/xolox/misc/option.vim

@@ -94,7 +94,7 @@ function! xolox#misc#option#eval_tags(value, ...) " {{{1
     " Make buffer relative pathnames absolute.
     if pattern =~ '^\./'
       let suffix = matchstr(pattern, '^./\zs.*$')
-      let directory = (&cpoptions =~ 'd') ? getcwd() : expand('%:p:h')
+      let directory = (&cpoptions =~# 'd') ? getcwd() : expand('%:p:h')
       let pattern = xolox#misc#path#merge(directory, suffix)
     endif
     " Make working directory relative pathnames absolute.

doc/misc.txt

@@ -164,7 +164,7 @@ from the source code of the miscellaneous scripts using the Python module
 'vimdoctool.py' included in vim-tools [3].
 
 The documentation of the 95 functions below was extracted from 19 Vim scripts
-on April 1, 2015 at 23:32.
+on April 1, 2015 at 23:39.
 
 -------------------------------------------------------------------------------
                                       *misc-asynchronous-vim-script-evaluation*