Enable syncing of filenames <-> titles (suggested by Julien Lancien)

README.md

@@ -40,6 +40,12 @@ The suffix to add to generated filenames. The plug-in generates filenames for yo
 
     :let g:notes_suffix = '.txt'
 
+### The `g:notes_title_sync` option
+
+When you rename a file in your notes directory but don't change the title, the plug-in will notice this the next time you open the note in Vim. Likewise when you change the title in another text editor but don't rename the file. By default the plug-in will prompt you whether you want it to update the title of the note, rename the file on disk or dismiss the prompt without doing anything.
+
+If you set this option to the string `'no'` this feature will be completely disabled. If you set it to `'change_title'` it will automatically change the title to match the filename. If you set it to `'rename_file'` it will automatically rename the file on disk to match the title.
+
 ### The `g:notes_shadowdir` option
 
 The notes plug-in comes with some default notes containing documentation about the plug-in. This option defines the path of the directory containing these notes.

autoload/xolox/notes.vim

@@ -1,12 +1,12 @@
 " Vim auto-load script
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: September 29, 2011
+" Last Change: October 18, 2011
 " URL: http://peterodding.com/code/vim/notes/
 
 " Note: This file is encoded in UTF-8 including a byte order mark so
 " that Vim loads the script using the right encoding transparently.
 
-let g:xolox#notes#version = '0.11.6'
+let g:xolox#notes#version = '0.12'
 
 function! xolox#notes#shortcut() " {{{1
   " The "note:" pseudo protocol is just a shortcut for the :Note command.
@@ -32,6 +32,7 @@ function! xolox#notes#edit(bang, title) abort " {{{1
   else
     let title = 'New note'
   endif
+  " At this point we're dealing with a new note.
   let fname = xolox#notes#title_to_fname(title)
   execute 'edit' . a:bang fnameescape(fname)
   setlocal filetype=notes
@@ -51,6 +52,50 @@ function! xolox#notes#edit(bang, title) abort " {{{1
   call xolox#misc#timer#stop('notes.vim %s: Started new note in %s.', g:xolox#notes#version, starttime)
 endfunction
 
+function! xolox#notes#check_sync_title() " {{{1
+  if g:notes_title_sync != 'no' && xolox#notes#buffer_is_note()
+    " Check if the note's title and filename are out of sync.
+    let name_on_disk = xolox#misc#path#absolute(expand('%:p'))
+    let name_from_title = xolox#notes#title_to_fname(getline(1))
+    if !xolox#misc#path#equals(name_on_disk, name_from_title)
+      let action = g:notes_title_sync
+      if action == 'prompt'
+        " Prompt the user what to do (if anything). First we perform a redraw
+        " to make sure the note's content is visible (without this the Vim
+        " window would be blank in my tests).
+        redraw
+        let message = "The note's title and filename do not correspond. What do you want to do?"
+        let options = "Change &title\nRename &file\nDo &nothing"
+        let choice = confirm(message, options, 3, 'Question')
+        if choice == 1
+          let action = 'change_title'
+        elseif choice == 2
+          let action = 'rename_file'
+        else
+          " User chose to do nothing or <Escape>'d the prompt.
+          return
+        endif
+        " Intentional fall through here :-)
+      endif
+      if action == 'change_title'
+        let new_title = xolox#notes#fname_to_title(name_on_disk)
+        call setline(1, new_title)
+        setlocal modified
+        call xolox#misc#msg#info("notes.vim %s: Changed note title to match filename.", g:xolox#notes#version)
+      elseif action == 'rename_file'
+        let new_fname = xolox#notes#title_to_fname(getline(1))
+        if rename(name_on_disk, new_fname) == 0
+          execute 'edit' fnameescape(new_fname)
+          setlocal filetype=notes
+          call xolox#misc#msg#info("notes.vim %s: Renamed file to match note title.", g:xolox#notes#version)
+        else
+          call xolox#misc#msg#warn("notes.vim %s: Failed to rename file to match note title?!", g:xolox#notes#version)
+        endif
+      endif
+    endif
+  endif
+endfunction
+
 function! xolox#notes#from_selection(bang) " {{{1
   " TODO This will always open a new buffer in the current window which I
   " don't consider very friendly (because the user loses his/her context),
@@ -312,7 +357,7 @@ function! xolox#notes#related(bang) " {{{1
     call xolox#misc#msg#warn("notes.vim %s: :RelatedNotes only works on named buffers!", g:xolox#notes#version)
   else
     let filename = xolox#misc#path#absolute(bufname)
-    if &filetype == 'notes' && xolox#misc#path#equals(g:notes_directory, expand('%:h'))
+    if xolox#notes#buffer_is_note()
       let pattern = '\<' . s:words_to_pattern(getline(1)) . '\>'
       let keywords = getline(1)
     else
@@ -399,6 +444,10 @@ function! xolox#notes#recent(bang, title_filter) " {{{1
   call xolox#misc#timer#stop("notes.vim %s: Created list of notes in %s.", g:xolox#notes#version, start)
 endfunction
 
+function! xolox#notes#buffer_is_note() " {{{1
+  return &filetype == 'notes' && xolox#misc#path#equals(expand('%:p:h'), g:notes_directory)
+endfunction
+
 " Miscellaneous functions. {{{1
 
 function! xolox#notes#friendly_date(time) " {{{2

doc/notes.txt

@@ -93,6 +93,21 @@ extension in the note's title, e.g.:
 >
     :let g:notes_suffix = '.txt'
 
+-------------------------------------------------------------------------------
+The *g:notes_title_sync* option
+
+When you rename a file in your notes directory but don't change the title, the
+plug-in will notice this the next time you open the note in Vim. Likewise when
+you change the title in another text editor but don't rename the file. By
+default the plug-in will prompt you whether you want it to update the title of
+the note, rename the file on disk or dismiss the prompt without doing
+anything.
+
+If you set this option to the string 'no' this feature will be completely
+disabled. If you set it to 'change_title' it will automatically change the
+title to match the filename. If you set it to 'rename_file' it will
+automatically rename the file on disk to match the title.
+
 -------------------------------------------------------------------------------
 The *g:notes_shadowdir* option
 

ftplugin/notes.vim

@@ -1,6 +1,6 @@
 " Vim file type plug-in
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: September 4, 2011
+" Last Change: October 18, 2011
 " URL: http://peterodding.com/code/vim/notes/
 
 if exists('b:did_ftplugin')
@@ -100,4 +100,11 @@ let b:undo_ftplugin .= ' | execute "sunmap <buffer> <S-Tab>"'
 " Automatically remove empty list items on Enter. {{{1
 inoremap <buffer> <silent> <expr> <CR> xolox#notes#cleanup_list()
 
+" }}}1
+
+" This is currently the only place where a command is guaranteed to be
+" executed when the user edits a note. Maybe I shouldn't abuse this (it
+" doesn't feel right ;-) but for now it will do.
+call xolox#notes#check_sync_title()
+
 " vim: ts=2 sw=2 et

plugin/notes.vim

@@ -1,6 +1,6 @@
 " Vim plug-in
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: September 4, 2011
+" Last Change: October 18, 2011
 " URL: http://peterodding.com/code/vim/notes/
 
 " Support for automatic update using the GLVS plug-in.
@@ -44,6 +44,12 @@ if !exists('g:notes_tagsindex')
   let g:notes_tagsindex = s:plugindir . '/tags.txt'
 endif
 
+" Define the default action when a note's filename and title are out of sync.
+if !exists('g:notes_title_sync')
+  " Valid values are "no", "change_title", "rename_file" and "prompt".
+  let g:notes_title_sync = 'prompt'
+endif
+
 " User commands to create, delete and search notes.
 command! -bar -bang -nargs=? -complete=customlist,xolox#notes#cmd_complete Note call xolox#notes#edit(<q-bang>, <q-args>)
 command! -bar -bang -range NoteFromSelectedText call xolox#notes#from_selection(<q-bang>)