append icon paramter for the favicon

gm_compile.go

@@ -42,11 +42,16 @@ func compile(markdown []byte) (html []byte, err error) {
 
 	// combine the template and the resulting html
 	var data = make(map[string]any)
+	// the title as parameter or from the first h1
 	if title != "" {
 		data["title"] = template.HTML(title)
 	} else {
 		data["title"] = template.HTML(getTitle(htmlStr))
 	}
+	// the favicon url
+	if favicon != "" {
+		data["favicon"] = template.HTML(favicon)
+	}
 	// the css can be either an url or a code
 	type cssType struct {
 		Url  template.HTML

gm_parameters.go

@@ -63,6 +63,7 @@ var (
 	// template flags
 	css        []string
 	title      string
+	favicon    string
 	htmlshell  string
 	liveupdate bool
 
@@ -112,6 +113,7 @@ func SetParameters() {
 
 	pflag.StringArrayVarP(&css, "css", "c", []string{"github"}, "A css content or url or the theme name present in github.com/kpym/markdown-css. Multiple values are allowed.")
 	pflag.StringVarP(&title, "title", "t", "", "The page title. If empty, search for <h1> in the resulting html.")
+	pflag.StringVar(&favicon, "icon", "", "The favicon url.")
 	pflag.StringVar(&htmlshell, "html", "", "The html template (file or string).")
 
 	pflag.StringVarP(&outdir, "out-dir", "o", "", "The build output folder (created if not already existing, not used when serving).")

gm_template.html

@@ -12,6 +12,9 @@
     {{.}}
     {{- end }}
     {{- end }}
+    {{- with .favicon }}
+    <link rel="icon" href="{{.}}">
+    {{- end }}
     {{- with .title }}
     <title>{{.}}</title>
     {{- end }}