don't fold single lines

diff --git a/vim/plugin/notmuch.vim b/vim/plugin/notmuch.vim
index c45b8e15a782b9fa1d4f3829bd5b572ad216dcac..09df1ed9aea3e5ca8a15d6aba755e1264482a662 100644 (file)
--- a/vim/plugin/notmuch.vim
+++ b/vim/plugin/notmuch.vim
@@ -468,8 +468,10 @@ function! s:NM_cmd_show_parse(inlines)
                                 elseif mode_type == 'cit'
                                         if part_end || match(line, g:notmuch_show_citation_regexp) == -1
                                                 let outlnum = len(info['disp'])
-                                                let foldinfo = [ mode_type, mode_start, outlnum-1,
-                                                               \ printf('[ %d-line citation.  Press "c" to show. ]', outlnum - mode_start) ]
+                                                if mode_start != outlnum
+                                                        let foldinfo = [ mode_type, mode_start, outlnum-1,
+                                                                       \ printf('[ %d-line citation.  Press "c" to show. ]', outlnum - mode_start) ]
+                                                endif
                                                 let mode_type = ''
                                         endif
                                 elseif mode_type == 'sig'