Update dependencies and fix whatsmeow API changes (#1887)

* Update dependencies

* Fix whatsmau API changes

9 files changed, 140 insertions, 148 deletions

diff --git a/vendor/github.com/gomarkdown/markdown/ast/node.go b/vendor/github.com/gomarkdown/markdown/ast/node.go
index 0d7175c5..e2031193 100644
--- a/vendor/github.com/gomarkdown/markdown/ast/node.go
+++ b/vendor/github.com/gomarkdown/markdown/ast/node.go
@@ -272,6 +272,7 @@ type CrossReference struct {
 	Container
 
 	Destination []byte // Destination is where the reference points to
+	Suffix      []byte // Potential citation suffix, i.e. (#myid, text)
 }
 
 // Citation is a citation node.
diff --git a/vendor/github.com/gomarkdown/markdown/html/renderer.go b/vendor/github.com/gomarkdown/markdown/html/renderer.go
index 875debe3..fc63c5fe 100644
--- a/vendor/github.com/gomarkdown/markdown/html/renderer.go
+++ b/vendor/github.com/gomarkdown/markdown/html/renderer.go
@@ -11,7 +11,6 @@ import (
 	"strings"
 
 	"github.com/gomarkdown/markdown/ast"
-	"github.com/gomarkdown/markdown/internal/valid"
 	"github.com/gomarkdown/markdown/parser"
 )
 
@@ -133,7 +132,9 @@ type Renderer struct {
 	// if > 0, will strip html tags in Out and Outs
 	DisableTags int
 
-	// TODO: documentation
+	// IsSafeURLOverride allows overriding the default URL matcher. URL is
+	// safe if the overriding function returns true. Can be used to extend
+	// the default list of safe URLs.
 	IsSafeURLOverride func(url []byte) bool
 
 	sr *SPRenderer
@@ -216,6 +217,11 @@ func NewRenderer(opts RendererOptions) *Renderer {
 }
 
 func isRelativeLink(link []byte) (yes bool) {
+	// empty links considerd relative
+	if len(link) == 0 {
+		return true
+	}
+
 	// a tag begin with '#'
 	if link[0] == '#' {
 		return true
@@ -245,6 +251,9 @@ func isRelativeLink(link []byte) (yes bool) {
 }
 
 func (r *Renderer) addAbsPrefix(link []byte) []byte {
+	if len(link) == 0 {
+		return link
+	}
 	if r.opts.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
 		newDest := r.opts.AbsolutePrefix
 		if link[0] != '/' {
@@ -291,7 +300,7 @@ func needSkipLink(r *Renderer, dest []byte) bool {
 	}
 	isSafeURL := r.IsSafeURLOverride
 	if isSafeURL == nil {
-		isSafeURL = valid.IsSafeURL
+		isSafeURL = parser.IsSafeURL
 	}
 	return flags&Safelink != 0 && !isSafeURL(dest) && !isMailto(dest)
 }
@@ -1269,33 +1278,6 @@ func slugify(in []byte) []byte {
 	return out[a : b+1]
 }
 
-// TODO: move to internal package
-// isAlnum returns true if c is a digit or letter
-// TODO: check when this is looking for ASCII alnum and when it should use unicode
-func isAlnum(c byte) bool {
-	return (c >= '0' && c <= '9') || isLetter(c)
-}
-
-// isSpace returns true if c is a white-space charactr
-func isSpace(c byte) bool {
-	return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f' || c == '\v'
-}
-
-// isLetter returns true if c is ascii letter
-func isLetter(c byte) bool {
-	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
-}
-
-// isPunctuation returns true if c is a punctuation symbol.
-func isPunctuation(c byte) bool {
-	for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
-		if c == r {
-			return true
-		}
-	}
-	return false
-}
-
 // BlockAttrs takes a node and checks if it has block level attributes set. If so it
 // will return a slice each containing a "key=value(s)" string.
 func BlockAttrs(node ast.Node) []string {
diff --git a/vendor/github.com/gomarkdown/markdown/html/smartypants.go b/vendor/github.com/gomarkdown/markdown/html/smartypants.go
index a09866b0..706e4ff1 100644
--- a/vendor/github.com/gomarkdown/markdown/html/smartypants.go
+++ b/vendor/github.com/gomarkdown/markdown/html/smartypants.go
@@ -3,10 +3,18 @@ package html
 import (
 	"bytes"
 	"io"
+
+	"github.com/gomarkdown/markdown/parser"
 )
 
 // SmartyPants rendering
 
+var (
+	isSpace       = parser.IsSpace
+	isAlnum       = parser.IsAlnum
+	isPunctuation = parser.IsPunctuation
+)
+
 // SPRenderer is a struct containing state of a Smartypants renderer.
 type SPRenderer struct {
 	inSingleQuote bool
diff --git a/vendor/github.com/gomarkdown/markdown/internal/valid/valid.go b/vendor/github.com/gomarkdown/markdown/internal/valid/valid.go
deleted file mode 100644
index 9b3de3ec..00000000
--- a/vendor/github.com/gomarkdown/markdown/internal/valid/valid.go
+++ /dev/null
@@ -1,59 +0,0 @@
-package valid
-
-import (
-	"bytes"
-)
-
-var URIs = [][]byte{
-	[]byte("http://"),
-	[]byte("https://"),
-	[]byte("ftp://"),
-	[]byte("mailto:"),
-}
-
-var Paths = [][]byte{
-	[]byte("/"),
-	[]byte("./"),
-	[]byte("../"),
-}
-
-// TODO: documentation
-func IsSafeURL(url []byte) bool {
-	nLink := len(url)
-	for _, path := range Paths {
-		nPath := len(path)
-		linkPrefix := url[:nPath]
-		if nLink >= nPath && bytes.Equal(linkPrefix, path) {
-			if nLink == nPath {
-				return true
-			} else if isAlnum(url[nPath]) {
-				return true
-			}
-		}
-	}
-
-	for _, prefix := range URIs {
-		// TODO: handle unicode here
-		// case-insensitive prefix test
-		nPrefix := len(prefix)
-		if nLink > nPrefix {
-			linkPrefix := bytes.ToLower(url[:nPrefix])
-			if bytes.Equal(linkPrefix, prefix) && isAlnum(url[nPrefix]) {
-				return true
-			}
-		}
-	}
-
-	return false
-}
-
-// isAlnum returns true if c is a digit or letter
-// TODO: check when this is looking for ASCII alnum and when it should use unicode
-func isAlnum(c byte) bool {
-	return (c >= '0' && c <= '9') || isLetter(c)
-}
-
-// isLetter returns true if c is ascii letter
-func isLetter(c byte) bool {
-	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
-}
diff --git a/vendor/github.com/gomarkdown/markdown/parser/block.go b/vendor/github.com/gomarkdown/markdown/parser/block.go
index 7c2401f1..eda9be7a 100644
--- a/vendor/github.com/gomarkdown/markdown/parser/block.go
+++ b/vendor/github.com/gomarkdown/markdown/parser/block.go
@@ -909,18 +909,18 @@ func syntaxRange(data []byte, iout *int) (int, int) {
 
 		// strip all whitespace at the beginning and the end
 		// of the {} block
-		for syn > 0 && isSpace(data[syntaxStart]) {
+		for syn > 0 && IsSpace(data[syntaxStart]) {
 			syntaxStart++
 			syn--
 		}
 
-		for syn > 0 && isSpace(data[syntaxStart+syn-1]) {
+		for syn > 0 && IsSpace(data[syntaxStart+syn-1]) {
 			syn--
 		}
 
 		i++
 	} else {
-		for i < n && !isSpace(data[i]) {
+		for i < n && !IsSpace(data[i]) {
 			syn++
 			i++
 		}
@@ -1767,7 +1767,7 @@ func skipUntilChar(data []byte, i int, c byte) int {
 
 func skipAlnum(data []byte, i int) int {
 	n := len(data)
-	for i < n && isAlnum(data[i]) {
+	for i < n && IsAlnum(data[i]) {
 		i++
 	}
 	return i
@@ -1775,7 +1775,7 @@ func skipAlnum(data []byte, i int) int {
 
 func skipSpace(data []byte, i int) int {
 	n := len(data)
-	for i < n && isSpace(data[i]) {
+	for i < n && IsSpace(data[i]) {
 		i++
 	}
 	return i
diff --git a/vendor/github.com/gomarkdown/markdown/parser/caption.go b/vendor/github.com/gomarkdown/markdown/parser/caption.go
index 54d3f741..fe31711a 100644
--- a/vendor/github.com/gomarkdown/markdown/parser/caption.go
+++ b/vendor/github.com/gomarkdown/markdown/parser/caption.go
@@ -58,7 +58,7 @@ func captionID(data []byte) (string, int) {
 	}
 	// remains must be whitespace.
 	for l := k + 1; l < end; l++ {
-		if !isSpace(data[l]) {
+		if !IsSpace(data[l]) {
 			return "", 0
 		}
 	}
diff --git a/vendor/github.com/gomarkdown/markdown/parser/inline.go b/vendor/github.com/gomarkdown/markdown/parser/inline.go
index c16eddd8..70d38f29 100644
--- a/vendor/github.com/gomarkdown/markdown/parser/inline.go
+++ b/vendor/github.com/gomarkdown/markdown/parser/inline.go
@@ -6,7 +6,6 @@ import (
 	"strconv"
 
 	"github.com/gomarkdown/markdown/ast"
-	"github.com/gomarkdown/markdown/internal/valid"
 )
 
 // Parsing of inline elements
@@ -69,7 +68,7 @@ func emphasis(p *Parser, data []byte, offset int) (int, ast.Node) {
 	if n > 2 && data[1] != c {
 		// whitespace cannot follow an opening emphasis;
 		// strikethrough only takes two characters '~~'
-		if isSpace(data[1]) {
+		if IsSpace(data[1]) {
 			return 0, nil
 		}
 		if p.extensions&SuperSubscript != 0 && c == '~' {
@@ -81,7 +80,7 @@ func emphasis(p *Parser, data []byte, offset int) (int, ast.Node) {
 			}
 			ret++ // we started with data[1:] above.
 			for i := 1; i < ret; i++ {
-				if isSpace(data[i]) && !isEscape(data, i) {
+				if IsSpace(data[i]) && !isEscape(data, i) {
 					return 0, nil
 				}
 			}
@@ -98,7 +97,7 @@ func emphasis(p *Parser, data []byte, offset int) (int, ast.Node) {
 	}
 
 	if n > 3 && data[1] == c && data[2] != c {
-		if isSpace(data[2]) {
+		if IsSpace(data[2]) {
 			return 0, nil
 		}
 		ret, node := helperDoubleEmphasis(p, data[2:], c)
@@ -110,7 +109,7 @@ func emphasis(p *Parser, data []byte, offset int) (int, ast.Node) {
 	}
 
 	if n > 4 && data[1] == c && data[2] == c && data[3] != c {
-		if c == '~' || isSpace(data[3]) {
+		if c == '~' || IsSpace(data[3]) {
 			return 0, nil
 		}
 		ret, node := helperTripleEmphasis(p, data, 3, c)
@@ -156,7 +155,7 @@ func codeSpan(p *Parser, data []byte, offset int) (int, ast.Node) {
 		if data[j] == '\n' {
 			break
 		}
-		if !isSpace(data[j]) {
+		if !IsSpace(data[j]) {
 			hasCharsAfterDelimiter = true
 		}
 	}
@@ -256,7 +255,7 @@ func maybeInlineFootnoteOrSuper(p *Parser, data []byte, offset int) (int, ast.No
 			return 0, nil
 		}
 		for i := offset; i < offset+ret; i++ {
-			if isSpace(data[i]) && !isEscape(data, i) {
+			if IsSpace(data[i]) && !isEscape(data, i) {
 				return 0, nil
 			}
 		}
@@ -421,7 +420,7 @@ func link(p *Parser, data []byte, offset int) (int, ast.Node) {
 
 			// skip whitespace after title
 			titleE = i - 1
-			for titleE > titleB && isSpace(data[titleE]) {
+			for titleE > titleB && IsSpace(data[titleE]) {
 				titleE--
 			}
 
@@ -433,7 +432,7 @@ func link(p *Parser, data []byte, offset int) (int, ast.Node) {
 		}
 
 		// remove whitespace at the end of the link
-		for linkE > linkB && isSpace(data[linkE-1]) {
+		for linkE > linkB && IsSpace(data[linkE-1]) {
 			linkE--
 		}
 
@@ -602,9 +601,8 @@ func link(p *Parser, data []byte, offset int) (int, ast.Node) {
 		}
 
 		// links need something to click on and somewhere to go
-		if len(uLink) == 0 || (t == linkNormal && txtE <= 1) {
-			return 0, nil
-		}
+		// [](http://bla) is legal in CommonMark, so allow txtE <=1 for linkNormal
+		// [bla]() is also legal in CommonMark, so allow empty uLink
 	}
 
 	// call the relevant rendering function
@@ -827,7 +825,9 @@ func linkEndsWithEntity(data []byte, linkEnd int) bool {
 }
 
 // hasPrefixCaseInsensitive is a custom implementation of
-//     strings.HasPrefix(strings.ToLower(s), prefix)
+//
+//	strings.HasPrefix(strings.ToLower(s), prefix)
+//
 // we rolled our own because ToLower pulls in a huge machinery of lowercasing
 // anything from Unicode and that's very slow. Since this func will only be
 // used on ASCII protocol prefixes, we can take shortcuts.
@@ -889,7 +889,7 @@ func autoLink(p *Parser, data []byte, offset int) (int, ast.Node) {
 
 	// scan backward for a word boundary
 	rewind := 0
-	for offset-rewind > 0 && rewind <= 7 && isLetter(data[offset-rewind-1]) {
+	for offset-rewind > 0 && rewind <= 7 && IsLetter(data[offset-rewind-1]) {
 		rewind++
 	}
 	if rewind > 6 { // longest supported protocol is "mailto" which has 6 letters
@@ -901,7 +901,7 @@ func autoLink(p *Parser, data []byte, offset int) (int, ast.Node) {
 
 	isSafeURL := p.IsSafeURLOverride
 	if isSafeURL == nil {
-		isSafeURL = valid.IsSafeURL
+		isSafeURL = IsSafeURL
 	}
 	if !isSafeURL(data) {
 		return 0, nil
@@ -996,7 +996,7 @@ func autoLink(p *Parser, data []byte, offset int) (int, ast.Node) {
 }
 
 func isEndOfLink(char byte) bool {
-	return isSpace(char) || char == '<'
+	return IsSpace(char) || char == '<'
 }
 
 // return the length of the given tag, or 0 is it's not valid
@@ -1018,7 +1018,7 @@ func tagLength(data []byte) (autolink autolinkType, end int) {
 		i = 1
 	}
 
-	if !isAlnum(data[i]) {
+	if !IsAlnum(data[i]) {
 		return notAutolink, 0
 	}
 
@@ -1026,7 +1026,7 @@ func tagLength(data []byte) (autolink autolinkType, end int) {
 	autolink = notAutolink
 
 	// try to find the beginning of an URI
-	for i < len(data) && (isAlnum(data[i]) || data[i] == '.' || data[i] == '+' || data[i] == '-') {
+	for i < len(data) && (IsAlnum(data[i]) || data[i] == '.' || data[i] == '+' || data[i] == '-') {
 		i++
 	}
 
@@ -1051,7 +1051,7 @@ func tagLength(data []byte) (autolink autolinkType, end int) {
 		for i < len(data) {
 			if data[i] == '\\' {
 				i += 2
-			} else if data[i] == '>' || data[i] == '\'' || data[i] == '"' || isSpace(data[i]) {
+			} else if data[i] == '>' || data[i] == '\'' || data[i] == '"' || IsSpace(data[i]) {
 				break
 			} else {
 				i++
@@ -1083,7 +1083,7 @@ func isMailtoAutoLink(data []byte) int {
 
 	// address is assumed to be: [-@._a-zA-Z0-9]+ with exactly one '@'
 	for i, c := range data {
-		if isAlnum(c) {
+		if IsAlnum(c) {
 			continue
 		}
 
@@ -1204,10 +1204,10 @@ func helperEmphasis(p *Parser, data []byte, c byte) (int, ast.Node) {
 			continue
 		}
 
-		if data[i] == c && !isSpace(data[i-1]) {
+		if data[i] == c && !IsSpace(data[i-1]) {
 
 			if p.extensions&NoIntraEmphasis != 0 {
-				if !(i+1 == len(data) || isSpace(data[i+1]) || isPunctuation(data[i+1])) {
+				if !(i+1 == len(data) || IsSpace(data[i+1]) || IsPunctuation(data[i+1])) {
 					continue
 				}
 			}
@@ -1231,7 +1231,7 @@ func helperDoubleEmphasis(p *Parser, data []byte, c byte) (int, ast.Node) {
 		}
 		i += length
 
-		if i+1 < len(data) && data[i] == c && data[i+1] == c && i > 0 && !isSpace(data[i-1]) {
+		if i+1 < len(data) && data[i] == c && data[i+1] == c && i > 0 && !IsSpace(data[i-1]) {
 			var node ast.Node = &ast.Strong{}
 			if c == '~' {
 				node = &ast.Del{}
@@ -1257,7 +1257,7 @@ func helperTripleEmphasis(p *Parser, data []byte, offset int, c byte) (int, ast.
 		i += length
 
 		// skip whitespace preceded symbols
-		if data[i] != c || isSpace(data[i-1]) {
+		if data[i] != c || IsSpace(data[i-1]) {
 			continue
 		}
 
diff --git a/vendor/github.com/gomarkdown/markdown/parser/parser.go b/vendor/github.com/gomarkdown/markdown/parser/parser.go
index 19d1f70b..07444cd8 100644
--- a/vendor/github.com/gomarkdown/markdown/parser/parser.go
+++ b/vendor/github.com/gomarkdown/markdown/parser/parser.go
@@ -84,7 +84,9 @@ type Parser struct {
 	// the bottom will be used to fill in the link details.
 	ReferenceOverride ReferenceOverrideFunc
 
-	// TODO: documentation
+	// IsSafeURLOverride allows overriding the default URL matcher. URL is
+	// safe if the overriding function returns true. Can be used to extend
+	// the default list of safe URLs.
 	IsSafeURLOverride func(url []byte) bool
 
 	Opts Options
@@ -390,35 +392,35 @@ func (p *Parser) parseRefsToAST() {
 //
 // Consider this markdown with reference-style links:
 //
-//     [link][ref]
+//	[link][ref]
 //
-//     [ref]: /url/ "tooltip title"
+//	[ref]: /url/ "tooltip title"
 //
 // It will be ultimately converted to this HTML:
 //
-//     <p><a href=\"/url/\" title=\"title\">link</a></p>
+//	<p><a href=\"/url/\" title=\"title\">link</a></p>
 //
 // And a reference structure will be populated as follows:
 //
-//     p.refs["ref"] = &reference{
-//         link: "/url/",
-//         title: "tooltip title",
-//     }
+//	p.refs["ref"] = &reference{
+//	    link: "/url/",
+//	    title: "tooltip title",
+//	}
 //
 // Alternatively, reference can contain information about a footnote. Consider
 // this markdown:
 //
-//     Text needing a footnote.[^a]
+//	Text needing a footnote.[^a]
 //
-//     [^a]: This is the note
+//	[^a]: This is the note
 //
 // A reference structure will be populated as follows:
 //
-//     p.refs["a"] = &reference{
-//         link: "a",
-//         title: "This is the note",
-//         noteID: <some positive int>,
-//     }
+//	p.refs["a"] = &reference{
+//	    link: "a",
+//	    title: "This is the note",
+//	    noteID: <some positive int>,
+//	}
 //
 // TODO: As you can see, it begs for splitting into two dedicated structures
 // for refs and for footnotes.
@@ -693,8 +695,8 @@ gatherLines:
 	return
 }
 
-// isPunctuation returns true if c is a punctuation symbol.
-func isPunctuation(c byte) bool {
+// IsPunctuation returns true if c is a punctuation symbol.
+func IsPunctuation(c byte) bool {
 	for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
 		if c == r {
 			return true
@@ -703,20 +705,63 @@ func isPunctuation(c byte) bool {
 	return false
 }
 
-// isSpace returns true if c is a white-space charactr
-func isSpace(c byte) bool {
+// IsSpace returns true if c is a white-space charactr
+func IsSpace(c byte) bool {
 	return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f' || c == '\v'
 }
 
-// isLetter returns true if c is ascii letter
-func isLetter(c byte) bool {
+// IsLetter returns true if c is ascii letter
+func IsLetter(c byte) bool {
 	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
 }
 
-// isAlnum returns true if c is a digit or letter
+// IsAlnum returns true if c is a digit or letter
 // TODO: check when this is looking for ASCII alnum and when it should use unicode
-func isAlnum(c byte) bool {
-	return (c >= '0' && c <= '9') || isLetter(c)
+func IsAlnum(c byte) bool {
+	return (c >= '0' && c <= '9') || IsLetter(c)
+}
+
+var URIs = [][]byte{
+	[]byte("http://"),
+	[]byte("https://"),
+	[]byte("ftp://"),
+	[]byte("mailto:"),
+}
+
+var Paths = [][]byte{
+	[]byte("/"),
+	[]byte("./"),
+	[]byte("../"),
+}
+
+// IsSafeURL returns true if url starts with one of the valid schemes or is a relative path.
+func IsSafeURL(url []byte) bool {
+	nLink := len(url)
+	for _, path := range Paths {
+		nPath := len(path)
+		linkPrefix := url[:nPath]
+		if nLink >= nPath && bytes.Equal(linkPrefix, path) {
+			if nLink == nPath {
+				return true
+			} else if IsAlnum(url[nPath]) {
+				return true
+			}
+		}
+	}
+
+	for _, prefix := range URIs {
+		// TODO: handle unicode here
+		// case-insensitive prefix test
+		nPrefix := len(prefix)
+		if nLink > nPrefix {
+			linkPrefix := bytes.ToLower(url[:nPrefix])
+			if bytes.Equal(linkPrefix, prefix) && IsAlnum(url[nPrefix]) {
+				return true
+			}
+		}
+	}
+
+	return false
 }
 
 // TODO: this is not used
@@ -809,7 +854,7 @@ func slugify(in []byte) []byte {
 	sym := false
 
 	for _, ch := range in {
-		if isAlnum(ch) {
+		if IsAlnum(ch) {
 			sym = false
 			out = append(out, ch)
 		} else if sym {
diff --git a/vendor/github.com/gomarkdown/markdown/parser/ref.go b/vendor/github.com/gomarkdown/markdown/parser/ref.go
index 0b59a196..c1e05341 100644
--- a/vendor/github.com/gomarkdown/markdown/parser/ref.go
+++ b/vendor/github.com/gomarkdown/markdown/parser/ref.go
@@ -7,8 +7,8 @@ import (
 	"github.com/gomarkdown/markdown/ast"
 )
 
-// parse '(#r)', where r does not contain spaces. Or.
-// (!item) (!item, subitem), for an index, (!!item) signals primary.
+// parse '(#r, text)', where r does not contain spaces, but text may (similar to a citation). Or. (!item) (!item,
+// subitem), for an index, (!!item) signals primary.
 func maybeShortRefOrIndex(p *Parser, data []byte, offset int) (int, ast.Node) {
 	if len(data[offset:]) < 4 {
 		return 0, nil
@@ -25,8 +25,8 @@ func maybeShortRefOrIndex(p *Parser, data []byte, offset int) (int, ast.Node) {
 			switch {
 			case c == ')':
 				break Loop
-			case !isAlnum(c):
-				if c == '_' || c == '-' || c == ':' {
+			case !IsAlnum(c):
+				if c == '_' || c == '-' || c == ':' || c == ' ' || c == ',' {
 					i++
 					continue
 				}
@@ -45,6 +45,21 @@ func maybeShortRefOrIndex(p *Parser, data []byte, offset int) (int, ast.Node) {
 		id := data[2:i]
 		node := &ast.CrossReference{}
 		node.Destination = id
+		if c := bytes.Index(id, []byte(",")); c > 0 {
+			idpart := id[:c]
+			suff := id[c+1:]
+			suff = bytes.TrimSpace(suff)
+			node.Destination = idpart
+			node.Suffix = suff
+		}
+		if bytes.Index(node.Destination, []byte(" ")) > 0 {
+			// no spaces allowed in id
+			return 0, nil
+		}
+		if bytes.Index(node.Destination, []byte(",")) > 0 {
+			// nor comma
+			return 0, nil
+		}
 
 		return i + 1, node