Fix wiki inter-links with cases and add tests for this case (#3560)

modules/markup/html.go

@@ -464,7 +464,11 @@ func shortLinkProcessorFull(ctx *postProcessCtx, node *html.Node, noLink bool) {
 	childNode.Parent = linkNode
 	absoluteLink := isLinkStr(link)
 	if !absoluteLink {
+		if image {
 			link = strings.Replace(link, " ", "+", -1)
+		} else {
+			link = strings.Replace(link, " ", "-", -1)
+		}
 	}
 	urlPrefix := ctx.urlPrefix
 	if image {

modules/markup/html_test.go

@@ -81,11 +81,13 @@ func TestRender_ShortLinks(t *testing.T) {
 
 	rawtree := util.URLJoin(AppSubURL, "raw", "master")
 	url := util.URLJoin(tree, "Link")
-	otherURL := util.URLJoin(tree, "OtherLink")
+	otherURL := util.URLJoin(tree, "Other-Link")
 	imgurl := util.URLJoin(rawtree, "Link.jpg")
+	otherImgurl := util.URLJoin(rawtree, "Link+Other.jpg")
 	urlWiki := util.URLJoin(AppSubURL, "wiki", "Link")
-	otherURLWiki := util.URLJoin(AppSubURL, "wiki", "OtherLink")
+	otherURLWiki := util.URLJoin(AppSubURL, "wiki", "Other-Link")
 	imgurlWiki := util.URLJoin(AppSubURL, "wiki", "raw", "Link.jpg")
+	otherImgurlWiki := util.URLJoin(AppSubURL, "wiki", "raw", "Link+Other.jpg")
 	favicon := "http://google.com/favicon.ico"
 
 	test(
@@ -124,6 +126,10 @@ func TestRender_ShortLinks(t *testing.T) {
 		"[[Name|Link.jpg|alt=\"AltName\"|title='Title']]",
 		`<p><a href="`+imgurl+`" rel="nofollow"><img src="`+imgurl+`" title="Title" alt="AltName"/></a></p>`,
 		`<p><a href="`+imgurlWiki+`" rel="nofollow"><img src="`+imgurlWiki+`" title="Title" alt="AltName"/></a></p>`)
+	test(
+		"[[Name|Link Other.jpg|alt=\"AltName\"|title='Title']]",
+		`<p><a href="`+otherImgurl+`" rel="nofollow"><img src="`+otherImgurl+`" title="Title" alt="AltName"/></a></p>`,
+		`<p><a href="`+otherImgurlWiki+`" rel="nofollow"><img src="`+otherImgurlWiki+`" title="Title" alt="AltName"/></a></p>`)
 	test(
 		"[[Link]] [[Other Link]]",
 		`<p><a href="`+url+`" rel="nofollow">Link</a> <a href="`+otherURL+`" rel="nofollow">Other Link</a></p>`,