feat: issue #260

Dramatically improves the usefulness of `--search` by outputting
"chunked" results. This removes the need (usually) to search and then
manually open a cheatsheet.

internal/sheet/search.go

@@ -9,21 +9,16 @@ import (
 func (s *Sheet) Search(reg *regexp.Regexp) string {
 
 	// record matches
-	matches := []string{}
+	matches := ""
 
 	// search through the cheatsheet's text line by line
-	// TODO: searching line-by-line is surely the "naive" approach. Revisit this
-	// later with an eye for performance improvements.
-	for _, line := range strings.Split(s.Text, "\n") {
+	for _, line := range strings.Split(s.Text, "\n\n") {
 
 		// exit early if the line doesn't match the regex
-		if !reg.MatchString(line) {
-			continue
+		if reg.MatchString(line) {
+			matches += line + "\n\n"
 		}
-
-		// record the match
-		matches = append(matches, line)
 	}
 
-	return strings.Join(matches, "\n")
+	return strings.TrimSpace(matches)
 }

internal/sheet/search_test.go

@@ -36,7 +36,7 @@ func TestSearchSingleMatch(t *testing.T) {
 
 	// mock a cheatsheet
 	sheet := Sheet{
-		Text: "The quick brown fox\njumped over\nthe lazy dog.",
+		Text: "The quick brown fox\njumped over\n\nthe lazy dog.",
 	}
 
 	// compile the search regex
@@ -49,7 +49,7 @@ func TestSearchSingleMatch(t *testing.T) {
 	matches := sheet.Search(reg)
 
 	// specify the expected results
-	want := "The quick brown fox"
+	want := "The quick brown fox\njumped over"
 
 	// assert that the correct matches were returned
 	if matches != want {
@@ -67,7 +67,7 @@ func TestSearchMultiMatch(t *testing.T) {
 
 	// mock a cheatsheet
 	sheet := Sheet{
-		Text: "The quick brown fox\njumped over\nthe lazy dog.",
+		Text: "The quick brown fox\n\njumped over\n\nthe lazy dog.",
 	}
 
 	// compile the search regex
@@ -80,7 +80,7 @@ func TestSearchMultiMatch(t *testing.T) {
 	matches := sheet.Search(reg)
 
 	// specify the expected results
-	want := "The quick brown fox\nthe lazy dog."
+	want := "The quick brown fox\n\nthe lazy dog."
 
 	// assert that the correct matches were returned
 	if !reflect.DeepEqual(matches, want) {