added functions for resetting and reloading snippets

doc/snipMate.txt

@@ -1,7 +1,7 @@
 *snipMate.txt*  Plugin for using TextMate-style snippets in Vim.
 
 snipMate                                       *snippet* *snippets* *snipMate*
-Last Change: July 13, 2009
+Last Change: December 27, 2009
 
 |snipMate-description|   Description
 |snipMate-syntax|        Snippet syntax
@@ -198,10 +198,20 @@ look like this: 'snippets/<filetype>/<trigger>.snippet'. If the snippet has
 multiple matches, it should look like this:
 'snippets/<filetype>/<trigger>/<name>.snippet' (see |multi_snip|).
 
-                                                            *ResetSnippets()*
+ResetAllSnippets()                                       *ResetAllSnippets()*
-The ResetSnippets() function removes all snippets from memory. This is useful
+ResetAllSnippets() removes all snippets from memory. This is useful to put at
-to put at the top of a snippet setup file for if you would like to |:source|
+the top of a snippet setup file for if you would like to |:source| it multiple
-it multiple times.
+times.
+
+ResetSnippets({filetype})                                   *ResetSnippets()*
+ResetSnippets() removes all snippets from memory for the given filetype.
+
+ReloadAllSnippets()                                     *ReloadAllSnippets()*
+ReloadAllSnippets() reloads all snippets for all filetypes. This is useful for
+testing and debugging.
+
+ReloadSnippets({filetype})                              *ReloadAllSnippets()*
+ReloadSnippets() reloads all snippets for the given filetype.
 
                                              *list-snippets* *i_CTRL-R_<Tab>*
 If you would like to see what snippets are available, simply type <c-r><tab>

plugin/snipMate.vim

@@ -1,6 +1,6 @@
 " File:          snipMate.vim
 " Author:        Michael Sanders
-" Version:       0.83
+" Version:       0.84
 " Description:   snipMate.vim implements some of TextMate's snippets features in
 "                Vim. A snippet is a piece of often-typed text that you can
 "                insert into your document using a trigger word followed by a "<tab>".
@@ -91,10 +91,35 @@ fun! ExtractSnipsFile(file, ft)
 	endfor
 endf
 
-fun! ResetSnippets()
+" Reset snippets for filetype.
+fun! ResetSnippets(ft)
+	let ft = a:ft == '' ? '_' : a:ft
+	for dict in [s:snippets, s:multi_snips, g:did_ft]
+		if has_key(dict, ft)
+			unlet dict[ft]
+		endif
+	endfor
+endf
+
+" Reset snippets for all filetypes.
+fun! ResetAllSnippets()
 	let s:snippets = {} | let s:multi_snips = {} | let g:did_ft = {}
 endf
 
+" Reload snippets for filetype.
+fun! ReloadSnippets(ft)
+	let ft = a:ft == '' ? '_' : a:ft
+	call ResetSnippets(ft)
+	call GetSnippets(g:snippets_dir, ft)
+endf
+
+" Reload snippets for all filetypes.
+fun! ReloadAllSnippets()
+	for ft in keys(g:did_ft)
+		call ReloadSnippets(ft)
+	endfor
+endf
+
 let g:did_ft = {}
 fun! GetSnippets(dir, filetypes)
 	for ft in split(a:filetypes, '\.')
@@ -147,7 +172,7 @@ fun! TriggerSnippet()
 		" the snippet.
 		if snippet != ''
 			let col = col('.') - len(trigger)
-			sil exe 's/\V'.escape(trigger, '/.').'\%#//'
+			sil exe 's/\V'.escape(trigger, '/\.').'\%#//'
 			return snipMate#expandSnip(snippet, col)
 		endif
 	endfor