Basic support for @tags (suggested by Jonathan Reeve)

README.md

@@ -7,6 +7,7 @@ The notes.vim plug-in for the [Vim text editor] [vim] makes it easy to manage yo
  * **Editing existing notes:** Execute `:Note anything` to edit a note containing `anything` in its title (if no notes are found a new one is created with its title set to `anything`)
  * **Deleting notes:** The `:DeleteNote` command enables you to delete the current note
  * **Searching notes:** `:SearchNotes keyword …` searches for keywords and `:SearchNotes /pattern/` searches for regular expressions
+   * **Smart defaults:** Without an argument `:SearchNotes` searches for the word under the cursor (if the word starts with `@` that character will be included in the search, this means you can easily search for *@tagged* notes)
    * **Back-references:** The `:RelatedNotes` command find all notes referencing the current file
    * A [Python 2] [python] script is included that accelerates keyword searches using an [SQLite] [sqlite] database
  * **Navigating between notes:** The included file type plug-in redefines [gf] [gf] to jump between notes and the syntax script highlights note names as hyper links

autoload/xolox/notes.vim

@@ -1,6 +1,6 @@
 " Vim auto-load script
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: May 22, 2011
+" Last Change: June 4, 2011
 " URL: http://peterodding.com/code/vim/notes/
 
 " Note: This file is encoded in UTF-8 including a byte order mark so
@@ -169,17 +169,25 @@ function! xolox#notes#delete(bang) " {{{1
 endfunction
 
 function! xolox#notes#search(bang, input) " {{{1
-  " Search all notes for the pattern or keywords {input}.
-  if a:input =~ '^/.\+/$'
-    call s:internal_search(a:bang, a:input, '', '')
+  " Search all notes for the pattern or keywords {input} (current word if none given).
+  let input = a:input
+  if input == ''
+    let input = s:tag_under_cursor()
+    if input == ''
+      call xolox#misc#msg#warn("No string under cursor")
+      return
+    endif
+  endif
+  if input =~ '^/.\+/$'
+    call s:internal_search(a:bang, input, '', '')
     if &buftype == 'quickfix'
-      let w:quickfix_title = 'Notes matching the pattern ' . a:input
+      let w:quickfix_title = 'Notes matching the pattern ' . input
     endif
   else
-    let keywords = split(a:input)
+    let keywords = split(input)
     let all_keywords = s:match_all_keywords(keywords)
     let any_keyword = s:match_any_keyword(keywords)
-    call s:internal_search(a:bang, all_keywords, a:input, any_keyword)
+    call s:internal_search(a:bang, all_keywords, input, any_keyword)
     if &buftype == 'quickfix'
       call map(keywords, '"`" . v:val . "''"')
       let w:quickfix_title = printf('Notes containing the word%s %s', len(keywords) == 1 ? '' : 's',
@@ -188,6 +196,16 @@ function! xolox#notes#search(bang, input) " {{{1
   endif
 endfunction
 
+function! s:tag_under_cursor() " {{{2
+  try
+    let isk_save = &isk
+    set iskeyword+=@-@
+    return expand('<cword>')
+  finally
+    let &isk = isk_save
+  endtry
+endfunction
+
 function! s:match_all_keywords(keywords) " {{{2
   " Create a regex that matches when a file contains all {keywords}.
   let results = copy(a:keywords)

doc/notes.txt

@@ -21,6 +21,10 @@ notes in Vim:
  - Searching notes: ':SearchNotes keyword …' searches for keywords and
    ':SearchNotes /pattern/' searches for regular expressions
 
+ - Smart defaults: Without an argument ':SearchNotes' searches for the word
+   under the cursor (if the word starts with '@' that character will be
+   included in the search, this means you can easily search for @tagged notes)
+
  - Back-references: The ':RelatedNotes' command find all notes referencing the
    current file
 

misc/notes/shadow/Note taking commands

@@ -38,6 +38,30 @@ notes containing all of the given keywords:
 
   :SearchNotes syntax highlighting
 
+## :SearchNotes understands @tags
+
+If you don’t pass any arguments to the :SearchNotes command it will search for
+the word under the cursor. If the word under the cursor starts with ‘@’ this
+character will be included in the search, which makes it possible to easily
+add @tags to your @notes and then search for those tags. To make searching for
+tags even easier you can create key mappings for the :SearchNotes command:
+  {{{vim
+  " Make the C-] combination search for @tags:
+  imap <C-]> <C-o>:SearchNotes<CR>
+  nmap <C-]> :SearchNotes<CR>
+
+  " Make double mouse click search for @tags. This is actually quite a lot of
+  " fun if you don’t use the mouse for text selections anyway; you can click
+  " between notes as if you’re in a web browser:
+  imap <2-LeftMouse> <C-o>:SearchNotes<CR>
+  nmap <2-LeftMouse> :SearchNotes<CR>
+  }}}
+These mappings are currently not enabled by default because they conflict with
+already useful key mappings, but if you have any suggestions for alternatives
+feel free to contact me through GitHub or at peter@peterodding.com.
+
+## Accelerated searching with Python and SQLite
+
 After collecting a fair amount of notes (say >= 5 MB) you will probably start
 to get annoyed at how long it takes Vim to search through all of your notes. To
 make searching more scalable the notes plug-in includes a Python script which

plugin/notes.vim

@@ -1,9 +1,9 @@
 " Vim plug-in
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: May 22, 2011
+" Last Change: June 4, 2011
 " URL: http://peterodding.com/code/vim/notes/
 " License: MIT
-" Version: 0.8.7
+" Version: 0.8.8
 
 " Support for automatic update using the GLVS plug-in.
 " GetLatestVimScripts: 3375 1 :AutoInstall: notes.zip
@@ -39,7 +39,7 @@ endif
 " User commands to create, delete and search notes.
 command! -bar -bang -nargs=? -complete=customlist,xolox#notes#complete Note call xolox#notes#edit(<q-bang>, <q-args>)
 command! -bar -bang DeleteNote call xolox#notes#delete(<q-bang>)
-command! -bar -bang -nargs=1 SearchNotes call xolox#notes#search(<q-bang>, <q-args>)
+command! -bar -bang -nargs=? SearchNotes call xolox#notes#search(<q-bang>, <q-args>)
 command! -bar -bang RelatedNotes call xolox#notes#related(<q-bang>)
 
 " Automatic commands to enable the :edit note:… shortcut and load the notes file type.

syntax/notes.vim

@@ -1,6 +1,6 @@
 " Vim syntax script
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: May 22, 2011
+" Last Change: June 4, 2011
 " URL: http://peterodding.com/code/vim/notes/
 
 " Note: This file is encoded in UTF-8 including a byte order mark so
@@ -27,6 +27,10 @@ call xolox#notes#highlight_names(1)
 syntax cluster notesInline add=notesName
 highlight def link notesName Underlined
 
+" Highlight @tags as hyperlinks. {{{2
+syntax match notesTagName /\(^\|\s\)\@<=@\w\+/
+highlight def link notesTagName Underlined
+
 " Highlight list bullets and numbers. {{{2
 syntax match notesListBullet /^\s*\zs\(•\|\*\)/
 highlight def link notesListBullet Comment