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* Fixed issue 98, issue 93 and issues related to the customization group

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* Added workaround for issue 97 in the FAQ
* Minor updates in the documentation
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capitaomorte 2009-09-05 14:44:18 +00:00
parent 7022af00f4
commit 0564b35647
5 changed files with 136 additions and 76 deletions
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52
doc/faq.html
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@ -3,7 +3,7 @@
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head> <head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="generator" content="Docutils 0.6: http://docutils.sourceforge.net/" /> <meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" />
<title>Frequently Asked Questions</title> <title>Frequently Asked Questions</title>
<link rel="stylesheet" href="styles.css" type="text/css" /> <link rel="stylesheet" href="styles.css" type="text/css" />
</head> </head>
@ -54,8 +54,8 @@
for other versions can be found <a title="" for other versions can be found <a title=""
href="http://code.google.com/p/yasnippet/downloads/list">here</a>. href="http://code.google.com/p/yasnippet/downloads/list">here</a>.
</p> </p>
<div class="section" id="why-there-s-an-extra-newline"> <div class="section" id="why-is-there-an-extra-newline">
<h1>Why there's an extra newline?</h1> <h1>Why is there an extra newline?</h1>
<p>If you have a newline at the end of the snippet definition file, then <p>If you have a newline at the end of the snippet definition file, then
YASnippet will add a newline when you expanding a snippet. Please YASnippet will add a newline when you expanding a snippet. Please
don't add a newline at the end if you don't want it when you saving don't add a newline at the end if you don't want it when you saving
@ -64,8 +64,8 @@ the snippet file.</p>
if you set <tt class="docutils literal"><span class="pre">require-final-newline</span></tt> to <tt class="docutils literal"><span class="pre">t</span></tt>, it will add the final if you set <tt class="docutils literal"><span class="pre">require-final-newline</span></tt> to <tt class="docutils literal"><span class="pre">t</span></tt>, it will add the final
newline for you automatically.</p> newline for you automatically.</p>
</div> </div>
<div class="section" id="why-tab-key-doesn-t-expand-a-snippet"> <div class="section" id="why-doesn-t-tab-expand-a-snippet">
<h1>Why TAB key doesn't expand a snippet?</h1> <h1>Why doesn't TAB expand a snippet?</h1>
<p>First check the mode line to see if there's <tt class="docutils literal"><span class="pre">yas</span></tt>. If not, then try <p>First check the mode line to see if there's <tt class="docutils literal"><span class="pre">yas</span></tt>. If not, then try
<tt class="docutils literal"><span class="pre">M-x</span> <span class="pre">yas/minor-mode</span></tt> to manually turn on the minor mode and try to <tt class="docutils literal"><span class="pre">M-x</span> <span class="pre">yas/minor-mode</span></tt> to manually turn on the minor mode and try to
expand the snippet again. If it works, then, you can add the following expand the snippet again. If it works, then, you can add the following
@ -88,11 +88,14 @@ than <tt class="docutils literal"><span class="pre">yas/expand</span></tt>, (e.g
code to work around:</p> code to work around:</p>
<div class="highlight"><pre>(add-hook &#39;org-mode-hook <div class="highlight"><pre>(add-hook &#39;org-mode-hook
#&#39;(lambda () #&#39;(lambda ()
(setq yas/fallback-behavior
`(apply ,(lookup-key org-mode-map [tab])))
(local-set-key [tab] &#39;yas/expand))) (local-set-key [tab] &#39;yas/expand)))
</pre></div> </pre></div>
<p>replace <tt class="docutils literal"><span class="pre">org-mode-hook</span></tt> with the major mode hook you are dealing <p>replace <tt class="docutils literal"><span class="pre">org-mode-hook</span></tt> and <tt class="docutils literal"><span class="pre">org-mode-map</span></tt> with the major mode
with (<tt class="docutils literal"><span class="pre">C-h</span> <span class="pre">m</span></tt> to see what major mode you are in).</p> hook you are dealing with (<tt class="docutils literal"><span class="pre">C-h</span> <span class="pre">m</span></tt> to see what major mode you are
<p>If this doesn't work, you can also try</p> in).</p>
<p>As an alternative, you can also try</p>
<div class="highlight"><pre>(defun yas/advise-indent-function (function-symbol) <div class="highlight"><pre>(defun yas/advise-indent-function (function-symbol)
(eval `(defadvice ,function-symbol (around yas/try-expand-first activate) (eval `(defadvice ,function-symbol (around yas/try-expand-first activate)
,(format ,(format
@ -114,15 +117,30 @@ group</a>.</p>
<p>Don't forget to attach the information on what command is bound to TAB <p>Don't forget to attach the information on what command is bound to TAB
as well as the mode information (Can be obtained by <tt class="docutils literal"><span class="pre">C-h</span> <span class="pre">m</span></tt>).</p> as well as the mode information (Can be obtained by <tt class="docutils literal"><span class="pre">C-h</span> <span class="pre">m</span></tt>).</p>
</div> </div>
<div class="section" id="how-to-define-snippets-with-named-by-characters-not-supported-by-the-filesystem"> <div class="section" id="why-doesn-t-tab-navigation-work-with-flyspell">
<h1>How to define snippets with named by characters not supported by the filesystem?</h1> <h1>Why doesn't TAB navigation work with flyspell</h1>
<p>For example, you want to define a snippet by the key <tt class="docutils literal"><span class="pre">&lt;</span></tt> which is not a <p>A workaround is to inhibit flyspell overlays while the snippet is active:</p>
valid character for filename on Windows. In this case, you may use <div class="highlight"><pre>(add-hook &#39;flyspell-incorrect-hook
<tt class="docutils literal"><span class="pre">yas/define</span></tt> to define the snippet. If you want to enjoy defining #&#39;(lambda (dummy1 dummy2 dymmy3)
snippets in a file, you can use the <tt class="docutils literal"><span class="pre">key</span></tt> property to specify the key of (and yas/active-field-overlay
the defined snippet explicitly.</p> (overlay-buffer yas/active-field-overlay))))
<p>Just name your snippet with an arbitrary valid filename, <tt class="docutils literal"><span class="pre">lt</span></tt> for </pre></div>
example. and specify <tt class="docutils literal"><span class="pre">&lt;</span></tt> for the <tt class="docutils literal"><span class="pre">key</span></tt> property:</p> <p>This is apparently related to overlay priorities. For some reason, the
<tt class="docutils literal"><span class="pre">keymap</span></tt> property of flyspell's overlays always takes priority over
the same property in yasnippet's overlays, even if one sets the
latter's <tt class="docutils literal"><span class="pre">priority</span></tt> property to something big. If you know
emacs-lisp and can solve this problem, drop a line in the <a class="reference external" href="http://groups.google.com/group/smart-snippet">discussion
group</a>.</p>
</div>
<div class="section" id="how-do-i-define-an-abbrev-key-containing-characters-not-supported-by-the-filesystem">
<h1>How do I define an abbrev key containing characters not supported by the filesystem?</h1>
<p>For example, you want to define a snippet by the key <tt class="docutils literal"><span class="pre">&lt;</span></tt> which is
not a valid character for filename on Windows. This means you can't
use the filename as a trigger key in this case.</p>
<p>You should rather use the <tt class="docutils literal"><span class="pre">#</span> <span class="pre">key:</span></tt> directive to specify the key of
the defined snippet explicitly and name your snippet with an arbitrary
valid filename, <tt class="docutils literal"><span class="pre">lt.yasnippet</span></tt> for example, using <tt class="docutils literal"><span class="pre">&lt;</span></tt> for the
<tt class="docutils literal"><span class="pre">#</span> <span class="pre">key:</span></tt> directive:</p>
<div class="highlight"><pre>#key: &lt; <div class="highlight"><pre>#key: &lt;
#name: &lt;...&gt;&lt;/...&gt; #name: &lt;...&gt;&lt;/...&gt;
# -- # --

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@ -2,8 +2,8 @@
Frequently Asked Questions Frequently Asked Questions
========================== ==========================
Why there's an extra newline? Why is there an extra newline?
============================= ==============================
If you have a newline at the end of the snippet definition file, then If you have a newline at the end of the snippet definition file, then
YASnippet will add a newline when you expanding a snippet. Please YASnippet will add a newline when you expanding a snippet. Please
@ -14,8 +14,8 @@ Note some editors will automatically add a newline for you. In Emacs,
if you set ``require-final-newline`` to ``t``, it will add the final if you set ``require-final-newline`` to ``t``, it will add the final
newline for you automatically. newline for you automatically.
Why TAB key doesn't expand a snippet? Why doesn't TAB expand a snippet?
===================================== =================================
First check the mode line to see if there's ``yas``. If not, then try First check the mode line to see if there's ``yas``. If not, then try
``M-x yas/minor-mode`` to manually turn on the minor mode and try to ``M-x yas/minor-mode`` to manually turn on the minor mode and try to
@ -48,12 +48,15 @@ code to work around:
(add-hook 'org-mode-hook (add-hook 'org-mode-hook
#'(lambda () #'(lambda ()
(local-set-key [tab] 'yas/expand))) (setq yas/fallback-behavior
`(apply ,(lookup-key org-mode-map [tab])))
(local-set-key [tab] 'yas/expand)))
replace ``org-mode-hook`` with the major mode hook you are dealing replace ``org-mode-hook`` and ``org-mode-map`` with the major mode
with (``C-h m`` to see what major mode you are in). hook you are dealing with (``C-h m`` to see what major mode you are
in).
If this doesn't work, you can also try As an alternative, you can also try
.. sourcecode:: lisp .. sourcecode:: lisp
@ -80,16 +83,36 @@ group <http://groups.google.com/group/smart-snippet>`_.
Don't forget to attach the information on what command is bound to TAB Don't forget to attach the information on what command is bound to TAB
as well as the mode information (Can be obtained by ``C-h m``). as well as the mode information (Can be obtained by ``C-h m``).
How to define snippets with named by characters not supported by the filesystem? Why doesn't TAB navigation work with flyspell
================================================================================ =============================================
For example, you want to define a snippet by the key ``<`` which is not a
valid character for filename on Windows. In this case, you may use
``yas/define`` to define the snippet. If you want to enjoy defining
snippets in a file, you can use the ``key`` property to specify the key of
the defined snippet explicitly.
Just name your snippet with an arbitrary valid filename, ``lt`` for A workaround is to inhibit flyspell overlays while the snippet is active:
example. and specify ``<`` for the ``key`` property:
.. sourcecode:: lisp
(add-hook 'flyspell-incorrect-hook
#'(lambda (dummy1 dummy2 dymmy3)
(and yas/active-field-overlay
(overlay-buffer yas/active-field-overlay))))
This is apparently related to overlay priorities. For some reason, the
``keymap`` property of flyspell's overlays always takes priority over
the same property in yasnippet's overlays, even if one sets the
latter's ``priority`` property to something big. If you know
emacs-lisp and can solve this problem, drop a line in the `discussion
group`_.
How do I define an abbrev key containing characters not supported by the filesystem?
====================================================================================
For example, you want to define a snippet by the key ``<`` which is
not a valid character for filename on Windows. This means you can't
use the filename as a trigger key in this case.
You should rather use the ``# key:`` directive to specify the key of
the defined snippet explicitly and name your snippet with an arbitrary
valid filename, ``lt.yasnippet`` for example, using ``<`` for the
``# key:`` directive:
.. sourcecode:: text .. sourcecode:: text
@ -98,3 +121,4 @@ example. and specify ``<`` for the ``key`` property:
# -- # --
<${1:div}>$0</$1> <${1:div}>$0</$1>
.. _discussion group: http://groups.google.com/group/smart-snippet

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@ -3,7 +3,7 @@
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head> <head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="generator" content="Docutils 0.6: http://docutils.sourceforge.net/" /> <meta name="generator" content="Docutils 0.5: http://docutils.sourceforge.net/" />
<title>Writing snippets</title> <title>Writing snippets</title>
<link rel="stylesheet" href="styles.css" type="text/css" /> <link rel="stylesheet" href="styles.css" type="text/css" />
</head> </head>
@ -262,13 +262,17 @@ newlines.</p>
<p>To override the keymap choice based on the major mode name. Use a cons <p>To override the keymap choice based on the major mode name. Use a cons
cell where the first element specifies the name of the keymap where cell where the first element specifies the name of the keymap where
you want to record the keybinding.</p> you want to record the keybinding.</p>
<div class="highlight"><pre> <div class="highlight"><pre>#name : &lt;p&gt;...&lt;/p&gt;
#binding: (rinari-minor-mode-map . &quot;C-c C-c C-m&quot;)
# --
&lt;p&gt;`(when yas/prefix &quot;\n&quot;)`$0`(when yas/prefix &quot;\n&quot;)`&lt;/p&gt;
</pre></div> </pre></div>
<p>Note that this feature is still experimental and should be used with <p><em>Note</em> that this feature is still <strong>experimental</strong>, it might go away,
caution: It is easy to override important keybindings for many basic be changed in future release, and should be used with caution: It is
modes and it is hard to undefine them. In particular, the variable easy to override important keybindings for many basic modes and it is
hard to undefine them. For the moment, the variable
<tt class="docutils literal"><span class="pre">yas/active-keybinding</span></tt> can tell you what snippet keybindings are <tt class="docutils literal"><span class="pre">yas/active-keybinding</span></tt> can tell you what snippet keybindings are
active and the function <tt class="docutils literal"><span class="pre">yas/kill-snippet-keybindings</span></tt> will try to active and the function <tt class="docutils literal"><span class="pre">yas/kill-snippet-keybindings</span></tt> will attempt to
undefine all the keybindings.</p> undefine all the keybindings.</p>
</div> </div>
<div class="section" id="contributor-snippet-author"> <div class="section" id="contributor-snippet-author">
@ -354,11 +358,13 @@ as the field and others mirrors.</p>
</div> </div>
<div class="section" id="mirrors-with-transformations"> <div class="section" id="mirrors-with-transformations">
<span id="transformations"></span><h2><a class="toc-backref" href="#id19">Mirrors with transformations</a></h2> <span id="transformations"></span><h2><a class="toc-backref" href="#id19">Mirrors with transformations</a></h2>
<p>If the default value of a field starts with <tt class="docutils literal"><span class="pre">$</span></tt>, then it is interpreted <p>If the value of an <tt class="docutils literal"><span class="pre">${n:</span></tt>-construct starts with and contains <tt class="docutils literal"><span class="pre">$(</span></tt>,
as the transformation code instead of default value. A transformation then it is interpreted as a mirror for field <tt class="docutils literal"><span class="pre">n</span></tt> with a
is some arbitrary Emacs-lisp code that will get evaluated in an environment transformation. The mirror's text content is calculated according to
when the variable text is bind to the inputted text of the this transformation, which is Emacs-lisp code that gets evaluated in
field. Here's an example for Objective-C:</p> an environment where the variable <tt class="docutils literal"><span class="pre">text</span></tt> (or <tt class="docutils literal"><span class="pre">yas/text</span></tt>) is bound
to the text content (string) contained in the field <tt class="docutils literal"><span class="pre">n</span></tt>.Here's an
example for Objective-C:</p>
<div class="highlight"><pre>- (${1:id})${2:foo} <div class="highlight"><pre>- (${1:id})${2:foo}
{ {
return $2; return $2;
@ -371,13 +377,13 @@ field. Here's an example for Objective-C:</p>
} }
$0 $0
</pre></div> </pre></div>
<p>Look at <tt class="docutils literal"><span class="pre">${2:$(capitalize</span> <span class="pre">text)}</span></tt>, it is a transformation instead of <p>Look at <tt class="docutils literal"><span class="pre">${2:$(capitalize</span> <span class="pre">text)}</span></tt>, it is a mirror with
a placeholder. The actual placeholder is at the first line: transformation instead of a field. The actual field is at the first
<tt class="docutils literal"><span class="pre">${2:foo}</span></tt>. When you type text in <tt class="docutils literal"><span class="pre">${2:foo}</span></tt>, the transformation line: <tt class="docutils literal"><span class="pre">${2:foo}</span></tt>. When you type text in <tt class="docutils literal"><span class="pre">${2:foo}</span></tt>, the
will be evaluated and the result will be placed there as the transformation will be evaluated and the result will be placed there
transformed text. So in this example, if you type &quot;baz&quot; in the field, as the transformed text. So in this example, if you type &quot;baz&quot; in the
the transformed text will be &quot;Baz&quot;. This example is also available in field, the transformed text will be &quot;Baz&quot;. This example is also
the screencast.</p> available in the screencast.</p>
<p>Another example is for <tt class="docutils literal"><span class="pre">rst-mode</span></tt>. In reStructuredText, the document <p>Another example is for <tt class="docutils literal"><span class="pre">rst-mode</span></tt>. In reStructuredText, the document
title can be some text surrounded by &quot;===&quot; below and above. The &quot;===&quot; title can be some text surrounded by &quot;===&quot; below and above. The &quot;===&quot;
should be at least as long as the text. So</p> should be at least as long as the text. So</p>

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doc/snippet-development.rst
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@ -213,16 +213,18 @@ cell where the first element specifies the name of the keymap where
you want to record the keybinding. you want to record the keybinding.
.. sourcecode:: text .. sourcecode:: text
#name : <p>...</p> #name : <p>...</p>
#binding: (rinari-minor-mode-map . "C-c C-c C-m") #binding: (rinari-minor-mode-map . "C-c C-c C-m")
# -- # --
<p>`(when yas/prefix "\n")`$0`(when yas/prefix "\n")`</p> <p>`(when yas/prefix "\n")`$0`(when yas/prefix "\n")`</p>
Note that this feature is still experimental and should be used with *Note* that this feature is still **experimental**, it might go away,
caution: It is easy to override important keybindings for many basic be changed in future release, and should be used with caution: It is
modes and it is hard to undefine them. In particular, the variable easy to override important keybindings for many basic modes and it is
hard to undefine them. For the moment, the variable
``yas/active-keybinding`` can tell you what snippet keybindings are ``yas/active-keybinding`` can tell you what snippet keybindings are
active and the function ``yas/kill-snippet-keybindings`` will try to active and the function ``yas/kill-snippet-keybindings`` will attempt to
undefine all the keybindings. undefine all the keybindings.
``# contributor:`` snippet author ``# contributor:`` snippet author
@ -339,11 +341,13 @@ as the field and others mirrors.
Mirrors with transformations Mirrors with transformations
---------------------------- ----------------------------
If the default value of a field starts with ``$``, then it is interpreted If the value of an ``${n:``-construct starts with and contains ``$(``,
as the transformation code instead of default value. A transformation then it is interpreted as a mirror for field ``n`` with a
is some arbitrary Emacs-lisp code that will get evaluated in an environment transformation. The mirror's text content is calculated according to
when the variable text is bind to the inputted text of the this transformation, which is Emacs-lisp code that gets evaluated in
field. Here's an example for Objective-C: an environment where the variable ``text`` (or ``yas/text``) is bound
to the text content (string) contained in the field ``n``.Here's an
example for Objective-C:
.. sourcecode:: text .. sourcecode:: text
@ -359,13 +363,13 @@ field. Here's an example for Objective-C:
} }
$0 $0
Look at ``${2:$(capitalize text)}``, it is a transformation instead of Look at ``${2:$(capitalize text)}``, it is a mirror with
a placeholder. The actual placeholder is at the first line: transformation instead of a field. The actual field is at the first
``${2:foo}``. When you type text in ``${2:foo}``, the transformation line: ``${2:foo}``. When you type text in ``${2:foo}``, the
will be evaluated and the result will be placed there as the transformation will be evaluated and the result will be placed there
transformed text. So in this example, if you type "baz" in the field, as the transformed text. So in this example, if you type "baz" in the
the transformed text will be "Baz". This example is also available in field, the transformed text will be "Baz". This example is also
the screencast. available in the screencast.
Another example is for ``rst-mode``. In reStructuredText, the document Another example is for ``rst-mode``. In reStructuredText, the document
title can be some text surrounded by "===" below and above. The "===" title can be some text surrounded by "===" below and above. The "==="

24
yasnippet.el
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@ -314,6 +314,7 @@ field"
:type '(choice (const :tag "Call previous command" call-other-command) :type '(choice (const :tag "Call previous command" call-other-command)
(const :tag "Do nothing" return-nil)) (const :tag "Do nothing" return-nil))
:group 'yasnippet) :group 'yasnippet)
(make-variable-buffer-local 'yas/fallback-behavior)
(defcustom yas/choose-keys-first nil (defcustom yas/choose-keys-first nil
"If non-nil, prompt for snippet key first, then for template. "If non-nil, prompt for snippet key first, then for template.
@ -700,7 +701,8 @@ With optional UNBIND-KEY, try to unbind that key from
(stringp yas/trigger-key) (stringp yas/trigger-key)
(not (string= yas/trigger-key ""))) (not (string= yas/trigger-key "")))
(define-key yas/minor-mode-map (read-kbd-macro yas/trigger-key) 'yas/expand))) (define-key yas/minor-mode-map (read-kbd-macro yas/trigger-key) 'yas/expand)))
;;;###autoload
(define-minor-mode yas/minor-mode (define-minor-mode yas/minor-mode
"Toggle YASnippet mode. "Toggle YASnippet mode.
@ -741,6 +743,7 @@ this effectively lets you define exceptions to the \"global\"
behaviour.") behaviour.")
(make-variable-buffer-local 'yas/dont-activate) (make-variable-buffer-local 'yas/dont-activate)
(defun yas/minor-mode-on () (defun yas/minor-mode-on ()
"Turn on YASnippet minor mode. "Turn on YASnippet minor mode.
@ -1846,11 +1849,15 @@ defined in `yas/fallback-behavior'"
nil) nil)
((eq yas/fallback-behavior 'call-other-command) ((eq yas/fallback-behavior 'call-other-command)
(let* ((yas/minor-mode nil) (let* ((yas/minor-mode nil)
(keys (or (and yas/trigger-key (keys-1 (this-command-keys-vector))
(stringp yas/trigger-key) (keys-2 (and yas/trigger-key
(read-kbd-macro yas/trigger-key)) (stringp yas/trigger-key)
(this-command-keys-vector))) (read-kbd-macro yas/trigger-key)))
(command (key-binding keys))) (command-1 (and keys-1 (key-binding keys-1)))
(command-2 (and keys-2(key-binding keys-2)))
(command (or (and (not (eq' command-1 'yas/expand))
command-1)
command2)))
(when (and (commandp command) (when (and (commandp command)
(not (eq 'yas/expand command))) (not (eq 'yas/expand command)))
(setq this-command command) (setq this-command command)
@ -2680,6 +2687,7 @@ Move the overlay, or create it if it does not exit."
(make-overlay (yas/field-start field) (make-overlay (yas/field-start field)
(yas/field-end field) (yas/field-end field)
nil nil t)) nil nil t))
(overlay-put yas/active-field-overlay 'priority 100)
(overlay-put yas/active-field-overlay 'face 'yas/field-highlight-face) (overlay-put yas/active-field-overlay 'face 'yas/field-highlight-face)
(overlay-put yas/active-field-overlay 'yas/snippet snippet) (overlay-put yas/active-field-overlay 'yas/snippet snippet)
(overlay-put yas/active-field-overlay 'modification-hooks '(yas/on-field-overlay-modification)) (overlay-put yas/active-field-overlay 'modification-hooks '(yas/on-field-overlay-modification))
@ -3067,9 +3075,9 @@ Meant to be called in a narrowed buffer, does various passes"
;; Reset the yas/dollar-regions ;; Reset the yas/dollar-regions
;; ;;
(setq yas/dollar-regions nil) (setq yas/dollar-regions nil)
;; protect quote and backquote escapes ;; protect escaped quote, backquotes and backslashes
;; ;;
(yas/protect-escapes nil '(?` ?')) (yas/protect-escapes nil '(?\\ ?` ?'))
;; replace all backquoted expressions ;; replace all backquoted expressions
;; ;;
(goto-char parse-start) (goto-char parse-start)