From 67a77c2cf1e15ad913547d3c1c05e7bd84f3ba95 Mon Sep 17 00:00:00 2001
From: kpym <kpym.tzanev@gmail.com>
Date: Fri, 17 Jan 2025 18:56:07 +0100
Subject: [PATCH] append icon paramter for the favicon

---
 gm_compile.go    | 5 +++++
 gm_parameters.go | 2 ++
 gm_template.html | 3 +++
 3 files changed, 10 insertions(+)

diff --git a/gm_compile.go b/gm_compile.go
index 1b4f9f5..8f5a0b0 100644
--- a/gm_compile.go
+++ b/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
diff --git a/gm_parameters.go b/gm_parameters.go
index 929a9f0..40e5725 100644
--- a/gm_parameters.go
+++ b/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).")
diff --git a/gm_template.html b/gm_template.html
index 53ce754..7b49c60 100644
--- a/gm_template.html
+++ b/gm_template.html
@@ -12,6 +12,9 @@
     {{.}}
     {{- end }}
     {{- end }}
+    {{- with .favicon }}
+    <link rel="icon" href="{{.}}">
+    {{- end }}
     {{- with .title }}
     <title>{{.}}</title>
     {{- end }}