# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1464111906 -7200
# Node ID 932f94b2d8c2f1194685f664a635375bf6ad395b
# Parent  adb90b8f299a8c8ba2d9f06f5a98e3b865227c0e
commit https://github.com/vim/vim/commit/a57024453115592b8847af40ddd965a33898e390
Author: Bram Moolenaar <Bram@vim.org>
Date:   Tue May 24 19:37:29 2016 +0200

    patch 7.4.1840
    Problem:    When using packages an "after" directory cannot be used.
    Solution:   Add the "after" directory of the package to 'runtimepath' if it
                exists.

diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -3326,13 +3326,15 @@ add_pack_plugin(char_u *fname, void *coo
     int	    keep;
     int	    oldlen;
     int	    addlen;
+    char_u  *afterdir;
+    int	    afterlen = 0;
     char_u  *ffname = fix_fname(fname);
 
     if (ffname == NULL)
 	return;
     if (cookie != &APP_LOAD && strstr((char *)p_rtp, (char *)ffname) == NULL)
     {
-	/* directory not in 'runtimepath', add it */
+	/* directory is not yet in 'runtimepath', add it */
 	p4 = p3 = p2 = p1 = get_past_head(ffname);
 	for (p = p1; *p; mb_ptr_adv(p))
 	    if (vim_ispathsep_nocolon(*p))
@@ -3360,20 +3362,31 @@ add_pack_plugin(char_u *fname, void *coo
 	}
 	*p4 = c;
 
+	/* check if rtp/pack/name/start/name/after exists */
+	afterdir = concat_fnames(ffname, (char_u *)"after", TRUE);
+	if (afterdir != NULL && mch_isdir(afterdir))
+	    afterlen = STRLEN(afterdir) + 1; /* add one for comma */
+
 	oldlen = (int)STRLEN(p_rtp);
-	addlen = (int)STRLEN(ffname);
-	new_rtp = alloc(oldlen + addlen + 2);
+	addlen = (int)STRLEN(ffname) + 1; /* add one for comma */
+	new_rtp = alloc(oldlen + addlen + afterlen + 1); /* add one for NUL */
 	if (new_rtp == NULL)
 	    goto theend;
 	keep = (int)(insp - p_rtp);
 	mch_memmove(new_rtp, p_rtp, keep);
 	new_rtp[keep] = ',';
-	mch_memmove(new_rtp + keep + 1, ffname, addlen + 1);
+	mch_memmove(new_rtp + keep + 1, ffname, addlen);
 	if (p_rtp[keep] != NUL)
-	    mch_memmove(new_rtp + keep + 1 + addlen, p_rtp + keep,
+	    mch_memmove(new_rtp + keep + addlen, p_rtp + keep,
 							   oldlen - keep + 1);
+	if (afterlen > 0)
+	{
+	    STRCAT(new_rtp, ",");
+	    STRCAT(new_rtp, afterdir);
+	}
 	set_option_value((char_u *)"rtp", 0L, new_rtp, 0);
 	vim_free(new_rtp);
+	vim_free(afterdir);
     }
 
     if (cookie != &APP_ADD_DIR)
diff --git a/src/testdir/test_packadd.vim b/src/testdir/test_packadd.vim
--- a/src/testdir/test_packadd.vim
+++ b/src/testdir/test_packadd.vim
@@ -13,6 +13,7 @@ endfunc
 func Test_packadd()
   call mkdir(s:plugdir . '/plugin/also', 'p')
   call mkdir(s:plugdir . '/ftdetect', 'p')
+  call mkdir(s:plugdir . '/after', 'p')
   set rtp&
   let rtp = &rtp
   filetype on
@@ -35,7 +36,8 @@ func Test_packadd()
   call assert_equal(77, g:plugin_also_works)
   call assert_equal(17, g:ftdetect_works)
   call assert_true(len(&rtp) > len(rtp))
-  call assert_true(&rtp =~ 'testdir/Xdir/pack/mine/opt/mytest\($\|,\)')
+  call assert_true(&rtp =~ '/testdir/Xdir/pack/mine/opt/mytest\($\|,\)')
+  call assert_true(&rtp =~ '/testdir/Xdir/pack/mine/opt/mytest/after$')
 
   " Check exception
   call assert_fails("packadd directorynotfound", 'E919:')
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1840,
+/**/
     1839,
 /**/
     1838,