Wait for :HackerNews command to load python code Fixes #22

Once you import a python module into an instance of vim it does not get
reloaded when a plugin manager updates the plugin. This can cause errors
when, for example, a new function is added to the python module and
updated vim code is trying to call it. This commit does two things:
1) Does not load the python code until the :HackerNews command is
called. There is no need to load the python code during vim startup if
the plugin will not be used.
2) Each time the :HackerNews command is issued and a .hackernews buffer
is opened the python code is reloaded to avoid the errors previously
mentioned.

1 files changed, 26 insertions, 4 deletions

diff --git a/ftplugin/hackernews.vim b/ftplugin/hackernews.vim
index b5d9372..023ac99 100644
--- a/ftplugin/hackernews.vim
+++ b/ftplugin/hackernews.vim
@@ -8,12 +8,34 @@
 "  Version: 0.1.1
 
 
+if !has('python')
+    echo "HackerNews.vim Error: Requires Vim compiled with +python"
+    finish
+endif
+
 if !exists("g:hackernews_marks")
     let g:hackernews_marks = {}
 endif
 
 
-noremap <buffer> o :python hacker_news_link()<cr>
-noremap <buffer> O :python hacker_news_link(external=True)<cr>
-noremap <buffer> u u:python recall_pos()<cr>
-noremap <buffer> <C-r> <C-r>:python recall_pos()<cr>
+" Import Python code
+execute "python import sys"
+execute "python sys.path.append(r'" . expand("<sfile>:p:h") . "')"
+
+python << EOF
+if 'hackernews' not in sys.modules:
+    import hackernews
+else:
+    # Reload python module to avoid errors when updating plugin
+    hackernews = reload(hackernews)
+EOF
+
+
+" Load front page
+execute "python hackernews.main()"
+
+
+noremap <buffer> o :python hackernews.link()<cr>
+noremap <buffer> O :python hackernews.link(external=True)<cr>
+noremap <buffer> u u:python hackernews.recall_pos()<cr>
+noremap <buffer> <C-r> <C-r>:python hackernews.recall_pos()<cr>