parser: infer tags for tldr from the filepath

ingest/cheatsheet/parser/parser.go

@@ -48,6 +48,7 @@ func (t *tldr) Parse(path string) (*cheatsheet.CheatSheet, error) {
 	scanner := bufio.NewScanner(f)
 
 	cs := &cheatsheet.CheatSheet{}
+
 	var description []string
 	var explanations []string
 	var commands []string
@@ -73,6 +74,12 @@ func (t *tldr) Parse(path string) (*cheatsheet.CheatSheet, error) {
 		}
 	}
 
+	dir, _ := filepath.Split(path)
+	// If the directory is not empty and not common, add it to the tags.
+	if tag := filepath.Base(dir); tag != "" && tag != "common" {
+		cs.Tags = append(cs.Tags, tag)
+	}
+
 	cs.Description = strings.Join(description, " ")
 	cs.Examples = zip(explanations, commands)
 	return cs, nil

ingest/cheatsheet/parser/parser_test.go

@@ -25,6 +25,7 @@ func TestTLDR(t *testing.T) {
 			filepath: "testdata/sh.md",
 			cheatSheet: &cheatsheet.CheatSheet{
 				Title:       "sh",
+				Tags:        []string{"testdata"},
 				Description: "Bourne shell, the standard command language interpreter. See also `histexpand` for history expansion. More information: <https://manned.org/sh>.",
 				Examples: []*cheatsheet.Example{
 					{