[add] Added CSS transform functions.

1 files changed, 594 insertions, 0 deletions

diff --git a/src/html-abbrev.el b/src/html-abbrev.el
new file mode 100644
index 0000000..8f5cba9
--- /dev/null
+++ b/src/html-abbrev.el
@@ -0,0 +1,594 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; XML abbrev
+
+(defun zencoding-expr (input)
+  "Parse a zen coding expression with optional filters."
+  (zencoding-pif (zencoding-parse "\\(.*?\\)|" 2 "expr|filter" it)
+                 (let ((input (elt it 1))
+                       (filters (elt it 2)))
+                   (zencoding-pif (zencoding-extract-filters filters)
+                                  (zencoding-filter input it)
+                                  it))
+                 (zencoding-filter input (zencoding-default-filter))))
+
+(defun zencoding-subexpr (input)
+  "Parse a zen coding expression with no filter. This pretty much defines precedence."
+  (zencoding-run zencoding-siblings
+                 it
+                 (zencoding-run zencoding-parent-child
+                                it
+                                (zencoding-run zencoding-multiplier
+                                               it
+                                               (zencoding-run zencoding-pexpr
+                                                              it
+                                                              (zencoding-run zencoding-text
+                                                                             it
+                                                                             (zencoding-run zencoding-tag
+                                                                                            it
+                                                                                            '(error "no match, expecting ( or a-zA-Z0-9"))))))))
+
+(defun zencoding-extract-filters (input)
+  "Extract filters from expression."
+  (zencoding-pif (zencoding-parse "\\([^\\|]+?\\)|" 2 "" it)
+                 (let ((filter-name (elt it 1))
+                       (more-filters (elt it 2)))
+                   (zencoding-pif (zencoding-extract-filters more-filters)
+                                  (cons filter-name it)
+                                  it))
+                 (zencoding-parse "\\([^\\|]+\\)" 1 "filter name" `(,(elt it 1)))))
+
+(defun zencoding-filter (input filters)
+  "Construct AST with specified filters."
+  (zencoding-pif (zencoding-subexpr input)
+                 (let ((result (car it))
+                       (rest (cdr it)))
+                   `((filter ,filters ,result) . ,rest))
+                 it))
+
+(defun zencoding-default-filter ()
+  "Default filter(s) to be used if none is specified."
+  (let* ((file-ext (car (zencoding-regex ".*\\(\\..*\\)" (or (buffer-file-name) "") 1)))
+         (defaults '(".html" ("html")
+                     ".htm"  ("html")
+                     ".haml" ("haml")
+                     ".clj"  ("hic")))
+         (default-else      '("html"))
+         (selected-default (member file-ext defaults)))
+    (if selected-default
+        (cadr selected-default)
+      default-else)))
+
+(defun zencoding-numbering (input)
+  (zencoding-parse
+   "\\(\\$+\\)" 2 "numbering, $"
+   (let ((doller (elt it 1)))
+     (zencoding-pif (zencoding-parse
+                     "@\\([0-9-][0-9]*\\)" 2 "numbering args"
+                     (let* ((args (read (elt it 1)))
+                            (direction  (not (or (eq '- args) (minusp args))))
+                            (base       (if (eq '- args) 1 (abs args))))
+                       `((n ,(length doller) ,direction ,base) . ,input)))
+                    it
+                    `((n ,(length doller) t 1) . ,input)))))
+
+(defun zencoding-split-numbering-expressions (input)
+  (labels
+      ((iter (input)
+             (zencoding-aif (zencoding-regex "\\([^$]*\\)\\(\\$.*\\)" input '(1 2))
+                (let ((prefix (car it))
+                      (input (cadr it)))
+                  (if (and (< 0 (length prefix)) ; check if ..\\$... or ...$...
+                           (string-equal (substring prefix -1) "\\"))
+                      `(,(store-substring prefix (- (length prefix) 1) ?$)
+                        ,@(iter (substring input 1)))
+                    (let ((res (zencoding-numbering input)))
+                      `(,prefix ,(car res) ,@(iter (cdr res))))))
+                (list input))))
+    (let ((res (iter input)))
+      (if (every #'stringp res)
+          (apply #'concat res)
+        `(numberings ,@res)))))
+
+(defun zencoding-instantiate-numbering-expression (i lim exp)
+  (labels ((instantiate
+            (i lim exps)
+            (apply #'concat
+                   (mapcar
+                    (lambda (exp)
+                      (if (listp exp)
+                          (let ((digits (second exp))
+                                (direction (third exp))
+                                (base (fourth exp)))
+                            (let ((num (if direction (+ base i)
+                                         (- (+ lim (- base 1)) i))))
+                              (format (concat "%0" (format "%d" digits) "d") num)))
+                        exp)) exps)))
+           (search
+            (i lim exp)
+            (if (listp exp)
+                (if (eql (car exp) 'numberings)
+                    (instantiate i lim (cdr exp))
+                  ;; Should do like this for real searching.
+                  ;; But stack overflow occurs.
+                  ;; (cons (search-numberings i lim (car exp))
+                  ;;       (search-numberings i lim (cdr exp)))
+                  (mapcar (lambda (exp) (search i lim exp)) exp))
+              exp)))
+    (search i lim exp)))
+
+(defun zencoding-multiply-expression (multiplicand exp)
+  (loop for i to (- multiplicand 1) collect
+        (zencoding-instantiate-numbering-expression i multiplicand exp)))
+
+(defun zencoding-multiplier (input)
+  (zencoding-pif (zencoding-run zencoding-pexpr
+                                it
+                                (zencoding-run zencoding-tag
+                                               it
+                                               (zencoding-run zencoding-text
+                                                              it
+                                                              '(error "expected *n multiplier"))))
+                 (let* ((expr (car it)) (input (cdr it))
+                        (multiplier expr))
+                   (zencoding-parse "\\*\\([0-9]+\\)" 2 "*n where n is a number"
+                                    (let ((multiplicand (read (elt it 1))))
+                                      `((list ,(zencoding-multiply-expression
+                                                multiplicand
+                                                multiplier)) . ,input))))))
+
+(defun zencoding-tag (input)
+  "Parse a tag."
+  (zencoding-run zencoding-tagname
+                 (let ((tagname (cadr expr))
+                       (has-body? (cddr expr)))
+                   (zencoding-pif (zencoding-run zencoding-identifier
+                                                 (zencoding-tag-classes
+                                                  `(tag (,tagname ,has-body? ,(cddr expr))) input)
+                                                 (zencoding-tag-classes
+                                                  `(tag (,tagname ,has-body? nil)) input))
+                                  (let ((tag-data (cadar it)) (input (cdr it)))
+                                    (zencoding-pif (zencoding-run zencoding-props
+                                                                  (let ((props (cdr expr)))
+                                                                    `((tag ,(append tag-data (list props))) . ,input))
+                                                                  `((tag ,(append tag-data '(nil))) . ,input))
+                                                   (let ((expr (car it)) (input (cdr it)))
+                                                     (zencoding-tag-text expr input))))))
+                 (zencoding-default-tag input)))
+
+(defun zencoding-default-tag (input)
+  "Parse a #id or .class"
+  (zencoding-parse "\\([#|\\.]\\)" 1 "tagname"
+                   (zencoding-tag (concat "div" (elt it 0)))))
+
+(defun zencoding-tag-text (tag input)
+  (let ((tag-data (cadr tag)))
+    (zencoding-run zencoding-text
+                   (let ((txt (cadr expr)))
+                     `((tag ,(append tag-data (list txt))) . ,input))
+                   `((tag ,(append tag-data '(nil))) . ,input))))
+
+(defun zencoding-tag-props (tag input)
+  (let ((tag-data (cadr tag)))
+    (zencoding-run zencoding-props
+                   (let ((props (cdr expr)))
+                     `((tag ,(append tag-data (list props))) . ,input))
+                   `((tag ,(append tag-data '(nil))) . ,input))))
+
+(defun zencoding-props (input)
+  "Parse many props."
+    (zencoding-run zencoding-prop
+                   (zencoding-pif (zencoding-props input)
+                                  `((props . ,(cons expr (cdar it))) . ,(cdr it))
+                                  `((props . ,(list expr)) . ,input))))
+
+(defun zencoding-prop (input)
+  (zencoding-parse
+   " " 1 "space"
+   (zencoding-run
+    zencoding-name
+    (let ((name (cdr expr)))
+      (zencoding-pif (zencoding-prop-value name input)
+                     it
+                     `((,(read name) "") . ,input))))))
+
+(defun zencoding-prop-value (name input)
+  (zencoding-pif (zencoding-parse "=\"\\(.*?\\)\"" 2
+                                  "=\"property value\""
+                                  (let ((value (elt it 1))
+                                        (input (elt it 2)))
+                                    `((,(read name) ,value) . ,input)))
+                 it
+                 (zencoding-parse "=\\([^\\,\\+\\>\\ )]*\\)" 2
+                                  "=property value"
+                                  (let ((value (elt it 1))
+                                        (input (elt it 2)))
+                                    `((,(read name) ,value) . ,input)))))
+
+(defun zencoding-tag-classes (tag input)
+  (let ((tag-data (cadr tag)))
+    (zencoding-run zencoding-classes
+                   (let ((classes (mapcar (lambda (cls) (cdadr cls))
+                                          (cdr expr))))
+                     `((tag ,(append tag-data (list classes))) . ,input))
+                   `((tag ,(append tag-data '(nil))) . ,input))))
+
+(defun zencoding-tagname (input)
+  "Parse a tagname a-zA-Z0-9 tagname (e.g. html/head/xsl:if/br)."
+  (zencoding-parse "\\([a-zA-Z][a-zA-Z0-9:$@-]*\/?\\)" 2 "tagname, a-zA-Z0-9"
+                   (let* ((tag-spec (elt it 1))
+                          (empty-tag (zencoding-regex "\\([^\/]*\\)\/" tag-spec 1))
+                          (tag (zencoding-split-numbering-expressions
+                                (if empty-tag (car empty-tag) tag-spec))))
+                     `((tagname . (,tag . ,(not empty-tag))) . ,input))))
+
+(defun zencoding-text (input)
+  "A zen coding expression innertext."
+  (zencoding-parse "{\\(.*?\\)}" 2 "inner text"
+                   (let ((txt (zencoding-split-numbering-expressions (elt it 1))))
+                     `((text ,txt) . ,input))))
+
+(defun zencoding-pexpr (input)
+  "A zen coding expression with parentheses around it."
+  (zencoding-parse "(" 1 "("
+                   (zencoding-run zencoding-subexpr
+                                  (zencoding-aif (zencoding-regex ")" input '(0 1))
+                                                 `(,expr . ,(elt it 1))
+                                                 '(error "expecting `)'")))))
+
+(defun zencoding-parent-child (input)
+  "Parse an tag>e expression, where `n' is an tag and `e' is any
+   expression."
+  (defun listing (parents child input)
+    (let ((len (length parents)))
+      `((list ,(map 'list
+                    (lambda (parent i)
+                      `(parent-child ,parent
+                                     ,(zencoding-instantiate-numbering-expression i len child)))
+                    parents
+                    (loop for i to (- len 1) collect i))) . ,input)))
+  (zencoding-run zencoding-multiplier
+                 (let* ((items (cadr expr))
+                        (rest (zencoding-child-sans expr input)))
+                   (if (not (eq (car rest) 'error))
+                       (let ((child (car rest))
+                             (input (cdr rest)))
+
+                         (zencoding-aif (zencoding-regex "^" input '(0 1))
+                                                   (let ((input (elt it 1)))
+                                                     (zencoding-run zencoding-subexpr
+                                                                    `((sibling ,(car (listing items child "")) ,expr) . ,input)
+                                                                    (listing items child input)))
+                                                   (listing items child input)))
+                     '(error "expected child")))
+                 (zencoding-run zencoding-tag
+                                (zencoding-child expr input)
+                                '(error "expected parent"))))
+
+(defun zencoding-child-sans (parent input)
+  (zencoding-parse ">" 1 ">"
+                   (zencoding-run zencoding-subexpr
+                                  it
+                                  '(error "expected child"))))
+
+(defun zencoding-child (parent input)
+  (zencoding-parse ">" 1 ">"
+                   (zencoding-run zencoding-subexpr
+                                  (let ((child expr))
+                                    (zencoding-aif (zencoding-regex "^" input '(0 1))
+                                                   (let ((input (elt it 1)))
+                                                     (zencoding-run zencoding-subexpr
+                                                                    `((sibling (parent-child ,parent ,child) ,expr) . ,input)
+                                                                    `((parent-child ,parent ,child) . ,input)))
+                                                   `((parent-child ,parent ,child) . ,input)))
+                                  '(error "expected child"))))
+
+(defun zencoding-sibling (input)
+  (zencoding-por zencoding-pexpr zencoding-multiplier
+                 it
+                 (zencoding-run zencoding-tag
+                                it
+                                (zencoding-run zencoding-text
+                                               it
+                                               '(error "expected sibling")))))
+
+(defun zencoding-siblings (input)
+  "Parse an e+e expression, where e is an tag or a pexpr."
+  (zencoding-run zencoding-sibling
+                 (let ((parent expr))
+                   (zencoding-parse "\\+" 1 "+"
+                                    (zencoding-run zencoding-subexpr
+                                                   (let ((child expr))
+                                                     `((sibling ,parent ,child) . ,input))
+                                                   (zencoding-expand parent input))))
+                 '(error "expected first sibling")))
+
+(defvar zencoding-expandable-tags
+  '("dl"    ">(dt+dd)"
+    "ol"    ">li"
+    "ul"    ">li"
+    "table" ">tr>td"))
+
+(defun zencoding-expand (parent input)
+  "Parse an e+ expression, where e is an expandable tag"
+  (let* ((parent-tag (car (elt parent 1)))
+         (expandable (member parent-tag zencoding-expandable-tags)))
+    (if expandable
+        (let ((expansion (zencoding-child parent (concat (cadr expandable)))))
+          (zencoding-pif (zencoding-parse "+\\(.*\\)" 1 "+expr"
+                                          (zencoding-subexpr (elt it 1)))
+                         `((sibling ,(car expansion) ,(car it)))
+                         expansion))
+      '(error "expected second sibling"))))
+
+(defun zencoding-name (input)
+  "Parse a class or identifier name, e.g. news, footer, mainimage"
+  (zencoding-parse "\\([a-zA-Z$@][a-zA-Z0-9$@_:-]*\\)" 2 "class or identifer name"
+                   `((name . ,(zencoding-split-numbering-expressions
+                               (elt it 1))) . ,input)))
+
+(defun zencoding-class (input)
+  "Parse a classname expression, e.g. .foo"
+  (zencoding-parse "\\." 1 "."
+                   (zencoding-run zencoding-name
+                                  `((class ,expr) . ,input)
+                                  '(error "expected class name"))))
+(defun zencoding-identifier (input)
+  "Parse an identifier expression, e.g. #foo"
+  (zencoding-parse "#" 1 "#"
+                   (zencoding-run zencoding-name
+                                  `((identifier . ,expr) . ,input))))
+
+(defun zencoding-classes (input)
+  "Parse many classes."
+  (zencoding-run zencoding-class
+                 (zencoding-pif (zencoding-classes input)
+                                `((classes . ,(cons expr (cdar it))) . ,(cdr it))
+                                `((classes . ,(list expr)) . ,input))
+                 '(error "expected class")))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Zen coding transformer from AST to string
+
+(defvar zencoding-inline-tags
+  '("a"
+    "abbr"
+    "acronym"
+    "cite"
+    "code"
+    "dd"
+    "dfn"
+    "dt"
+    "em"
+    "h1" "h2" "h3" "h4" "h5" "h6"
+    "kbd"
+    "li"
+    "q"
+    "span"
+    "strong"
+    "var"
+    "textarea"
+    "small"
+    "time" "del" "ins"
+    "sub"
+    "sup"
+    "i" "s" "b"
+    "ruby" "rt" "rp"
+    "bdo"
+    "iframe" "canvas"
+    "audio" "video"
+    "ovject" "embed"
+    "map"))
+
+(defvar zencoding-block-tags
+  '("p"
+    "article"
+    "section"
+    "aside"
+    "nav"
+    "figure"
+    "address"
+    "header"
+    "footer"))
+
+(defvar zencoding-self-closing-tags
+  '("br"
+    "img"
+    "input"
+    "wbr"
+    "object"
+    "source"
+    "area"
+    "param"
+    "option"))
+
+(defvar zencoding-leaf-function nil
+  "Function to execute when expanding a leaf node in the
+  Zencoding AST.")
+
+(defvar zencoding-filters
+  '("html" (zencoding-primary-filter zencoding-make-html-tag)
+    "c"    (zencoding-primary-filter zencoding-make-commented-html-tag)
+    "haml" (zencoding-primary-filter zencoding-make-haml-tag)
+    "hic"  (zencoding-primary-filter zencoding-make-hiccup-tag)
+    "e"    (zencoding-escape-xml)))
+
+(defun zencoding-primary-filter (input proc)
+  "Process filter that needs to be executed first, ie. not given output from other filter."
+  (if (listp input)
+      (let ((tag-maker (cadr proc)))
+        (zencoding-transform-ast input tag-maker))
+    nil))
+
+(defun zencoding-process-filter (filters input)
+  "Process filters, chain one filter output as the input of the next filter."
+  (let ((filter-data (member (car filters) zencoding-filters))
+        (more-filters (cdr filters)))
+    (if filter-data
+        (let* ((proc   (cadr filter-data))
+               (fun    (car proc))
+               (filter-output (funcall fun input proc)))
+          (if more-filters
+              (zencoding-process-filter more-filters filter-output)
+            filter-output))
+      nil)))
+
+(defun zencoding-make-tag (tag-maker tag-info &optional content)
+  "Extract tag info and pass them to tag-maker."
+  (let* ((name      (pop tag-info))
+         (has-body? (pop tag-info))
+         (id        (pop tag-info))
+         (classes   (pop tag-info))
+         (props     (pop tag-info))
+         (txt       (pop tag-info))
+         (self-closing? (not (or txt content
+                                 (and has-body?
+                                      (not (member name zencoding-self-closing-tags)))))))
+    (funcall tag-maker name id classes props txt self-closing?
+             (if content content
+               (if zencoding-leaf-function (funcall zencoding-leaf-function))))))
+
+(defun zencoding-make-html-tag (tag-name tag-id tag-classes tag-props tag-txt self-closing? content)
+  "Create HTML markup string"
+  (let* ((id      (zencoding-concat-or-empty " id=\"" tag-id "\""))
+         (classes (zencoding-mapconcat-or-empty " class=\"" tag-classes " " "\""))
+         (props   (zencoding-mapconcat-or-empty " " tag-props " " nil
+                                                (lambda (prop)
+                                                  (concat (symbol-name (car prop)) "=\"" (cadr prop) "\""))))
+         (content-multiline? (and content (string-match "\n" content)))
+         (block-tag? (or (member tag-name zencoding-block-tags)
+                         (and (> (length tag-name) 1)
+                              (not (member tag-name zencoding-inline-tags)))))
+         (lf (if (or content-multiline? block-tag?)
+                 "\n")))
+    (concat "<" tag-name id classes props (if self-closing?
+                                              "/>"
+                                            (concat ">"
+                                                    (if tag-txt
+                                                        (if (or content-multiline? block-tag?)
+                                                            (zencoding-indent tag-txt)
+                                                          tag-txt))
+                                                    (if content
+                                                        (if (or content-multiline? block-tag?)
+                                                            (zencoding-indent content)
+                                                          content))
+                                                    lf
+                                                    "</" tag-name ">")))))
+
+(defun zencoding-make-commented-html-tag (tag-name tag-id tag-classes tag-props tag-txt self-closing? content)
+  "Create HTML markup string with extra comments for elements with #id or .classes"
+  (let ((body (zencoding-make-html-tag tag-name tag-id tag-classes tag-props tag-txt self-closing? content)))
+    (if (or tag-id tag-classes)
+        (let ((id      (zencoding-concat-or-empty "#" tag-id))
+              (classes (zencoding-mapconcat-or-empty "." tag-classes ".")))
+          (concat "<!-- " id classes " -->\n"
+                  body
+                  "\n<!-- /" id classes " -->"))
+      body)))
+
+(defun zencoding-make-haml-tag (tag-name tag-id tag-classes tag-props tag-txt self-closing? content)
+  "Create HAML string"
+  (let ((name    (if (and (equal tag-name "div")
+                          (or tag-id tag-classes))
+                     ""
+                   (concat "%" tag-name)))
+        (id      (zencoding-concat-or-empty "#" tag-id))
+        (classes (zencoding-mapconcat-or-empty "." tag-classes "."))
+        (props   (zencoding-mapconcat-or-empty "{" tag-props ", " "}"
+                                               (lambda (prop)
+                                                 (concat ":" (symbol-name (car prop)) " => \"" (cadr prop) "\"")))))
+    (concat name id classes props
+            (if tag-txt
+                (zencoding-indent tag-txt))
+            (if content
+                (zencoding-indent content)))))
+
+(defun zencoding-make-hiccup-tag (tag-name tag-id tag-classes tag-props tag-txt self-closing? content)
+  "Create Hiccup string"
+  (let* ((id      (zencoding-concat-or-empty "#" tag-id))
+         (classes (zencoding-mapconcat-or-empty "." tag-classes "."))
+         (props   (zencoding-mapconcat-or-empty " {" tag-props ", " "}"
+                                                (lambda (prop)
+                                                  (concat ":" (symbol-name (car prop)) " \"" (cadr prop) "\""))))
+         (content-multiline? (and content (string-match "\n" content)))
+         (block-tag? (or (member tag-name zencoding-block-tags)
+                         (and (> (length tag-name) 1)
+                              (not (member tag-name zencoding-inline-tags))))))
+    (concat "[:" tag-name id classes props
+            (if tag-txt
+                (let ((tag-txt-quoted (concat "\"" tag-txt "\"")))
+                  (if (or content-multiline? block-tag?)
+                      (zencoding-indent tag-txt-quoted)
+                    (concat " " tag-txt-quoted))))
+            (if content
+                (if (or content-multiline? block-tag?)
+                    (zencoding-indent content)
+                  (concat " " content)))
+            "]")))
+
+(defun zencoding-make-text (tag-maker text)
+  (cond
+   ((eq tag-maker 'zencoding-make-hiccup-tag)
+    (concat "\"" text "\""))
+   (t text)))
+
+(defun zencoding-concat-or-empty (prefix body &optional suffix)
+  "Return prefixed suffixed text or empty string."
+  (if body
+      (concat prefix body suffix)
+    ""))
+
+(defun zencoding-mapconcat-or-empty (prefix list-body delimiter &optional suffix map-fun)
+  "Return prefixed suffixed mapconcated text or empty string."
+  (if list-body
+      (let* ((mapper (if map-fun map-fun 'identity))
+             (body (mapconcat mapper list-body delimiter)))
+        (concat prefix body suffix))
+    ""))
+
+(defun zencoding-escape-xml (input proc)
+  "Escapes XML-unsafe characters: <, > and &."
+  (replace-regexp-in-string
+   "<" "&lt;"
+   (replace-regexp-in-string
+    ">" "&gt;"
+    (replace-regexp-in-string
+     "&" "&amp;"
+     (if (stringp input)
+         input
+       (zencoding-process-filter (zencoding-default-filter) input))))))
+
+(defun zencoding-transform (ast-with-filters)
+  "Transform AST (containing filter data) into string."
+  (let ((filters (cadr ast-with-filters))
+        (ast (caddr ast-with-filters)))
+    (zencoding-process-filter filters ast)))
+
+(defun zencoding-transform-ast (ast tag-maker)
+  "Transform AST (without filter data) into string."
+  (let ((type (car ast)))
+    (cond
+     ((eq type 'list)
+      (mapconcat (lexical-let ((make-tag-fun tag-maker))
+                   #'(lambda (sub-ast)
+                       (zencoding-transform-ast sub-ast make-tag-fun)))
+                 (cadr ast)
+                 "\n"))
+     ((eq type 'tag)
+      (zencoding-make-tag tag-maker (cadr ast)))
+     ((eq type 'text)
+      (zencoding-make-text tag-maker (cadr ast)))
+     ((eq type 'parent-child)
+      (let ((parent (cadadr ast))
+            (children (zencoding-transform-ast (caddr ast) tag-maker)))
+        (zencoding-make-tag tag-maker parent children)))
+     ((eq type 'sibling)
+      (let ((sib1 (zencoding-transform-ast (cadr ast) tag-maker))
+            (sib2 (zencoding-transform-ast (caddr ast) tag-maker)))
+        (concat sib1 "\n" sib2))))))
+
+(defun zencoding-indent (text)
+  "Indent the text"
+  (if text
+      (replace-regexp-in-string "\n" "\n    " (concat "\n" text))
+    nil))
+