sourcing plugin twice, therefore "map <unique> xxx~ " print error

[av930]

Hello I am JK from seoul, korea
recently I found this errors, but I 'm not sure if it is normal or not.
the problem is that plugin-vundle source 2 times the plugin script.
plz look below log...

to make it worse...
DirDiff.vim defines these kinds of mapping.
 "map  <script> DirDiffGet    :diffget" 

therefore  keyword make error like this.
"mapping already exists for <80>SDirDiffGet" 


here is the log from my setting.

1025 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin/**/*.vim"
1026 chdir(/)
1027 chdir(/cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin)
1028 chdir(/)
1029 sourcing "/cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin/DirDiff.vim"
1030 finished sourcing /cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin/DirDiff.vim
1031 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/asciidoc.vim/plugin/**/*.vim"
1032 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/inkpot/plugin/**/*.vim"
1033 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/jellybeans.vim/plugin/**/*.vim"
1034 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/Wombat/plugin/**/*.vim"
1035 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/peaksea/plugin/**/*.vim"
1036 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin/**/*.vim"
1037 chdir(/)
1038 chdir(/cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin)
1039 chdir(/)
1040 sourcing "/cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin/DirDiff.vim"
1041 Error detected while processing /cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin/DirDiff.vim:
1042 line  221:
1043 E227: mapping already exists for <80>SDirDiffGet
1044 line  222:
1045 E227: mapping already exists for <80>SDirDiffPut
1046 line  223:
1047 E227: mapping already exists for <80>SDirDiffNext
1048 line  224:
1049 E227: mapping already exists for <80>SDirDiffPrev
1050 line  225:
1051 E227: mapping already exists for <80>SDirDiffQuit
1052 finished sourcing /cygdrive/d/code_study/tool/.vim/bundle/DirDiff.vim/plugin/DirDiff.vim
1053 Searching for "/cygdrive/d/code_study/tool/.vim/bundle/SrcExpl/plugin/**/*.vim"


I can easily ban the error by eliminating  keyword, when i start vim. 
but I don't like to make any commit in DirDiff.vim 

[jdevera]

The problem is that the plugin is not following Vim's guidelines on plugin writing and it's not providing any checks to stop sourcing if it's already sourced. So if you start Vim, it get's sourced once, then when you do a BundleInstall! it gets sourced again. Those maps are supposed to be unique, but the script is lacking something like this in its first lines:

if exists('g:loaded_dirdiff')
   finish
endif
let g:loaded_dirdiff = 1

Then the file can be sourced many times and the maps will not be recreated. I suggest you either contact the DirDiff maintainer to let them know of this issue, or simply fork the repo and add those lines to the top of the script and then use your fork with vundle instead, maybe do both.

Note that Vundle currently can't tell if you have changed the source of the repository, since it only looks at the directory name. So if you use your own fork, you need to remove the directory from the bundles directory, or disable the Bundle and run BundleInstall! once before re-adding it with your fork.

[av930]

Ok Thanks. jdevera ! you are right.
I will do as you said. thanks again.