If no language is provided to Pygments, then try and guess it

Previously if no language was specified, then illegal args would be passed to pygments, for example `pygments -l -fhtml`, which would result in pygments printing an error.

diff --git a/helpers/pygments.go b/helpers/pygments.go
index 3f0f90b7a434049d5c39d1ea42495d45b831803b..ecbdf99d0e64ba8af63ac43411ac77abe4e3cb66 100644 (file)
--- a/helpers/pygments.go
+++ b/helpers/pygments.go
@@ -94,7 +94,14 @@ func Highlight(code, lang, optsStr string) string {
        var out bytes.Buffer
        var stderr bytes.Buffer
 
-       cmd := exec.Command(pygmentsBin, "-l"+lang, "-fhtml", "-O", options)
+       var langOpt string
+       if lang == "" {
+               langOpt = "-g" // Try guessing the language
+       } else {
+               langOpt = "-l"+lang
+       }
+
+       cmd := exec.Command(pygmentsBin, langOpt, "-fhtml", "-O", options)
        cmd.Stdin = strings.NewReader(code)
        cmd.Stdout = &out
        cmd.Stderr = &stderr