From 6a67712944bbba3bfbb04e6ad02f7ae7d55cd238 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Tue, 13 Aug 2024 11:19:54 +0900
Subject: Implement exact-boundary match type

Close #3963
---
 src/pattern.go | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'src/pattern.go')

diff --git a/src/pattern.go b/src/pattern.go
index ee1b88a5..c736be3c 100644
--- a/src/pattern.go
+++ b/src/pattern.go
@@ -23,6 +23,7 @@ type termType int
 const (
 	termFuzzy termType = iota
 	termExact
+	termExactBoundary
 	termPrefix
 	termSuffix
 	termEqual
@@ -147,6 +148,7 @@ func BuildPattern(cache *ChunkCache, patternCache map[string]*Pattern, fuzzy boo
 	ptr.procFun[termFuzzy] = fuzzyAlgo
 	ptr.procFun[termEqual] = algo.EqualMatch
 	ptr.procFun[termExact] = algo.ExactMatchNaive
+	ptr.procFun[termExactBoundary] = algo.ExactMatchBoundary
 	ptr.procFun[termPrefix] = algo.PrefixMatch
 	ptr.procFun[termSuffix] = algo.SuffixMatch
 
@@ -193,7 +195,14 @@ func parseTerms(fuzzy bool, caseMode Case, normalize bool, str string) []termSet
 			text = text[:len(text)-1]
 		}
 
-		if strings.HasPrefix(text, "'") {
+		if fuzzy && len(text) > 2 && strings.HasPrefix(text, "'") && strings.HasSuffix(text, "'") ||
+			!fuzzy && !strings.HasPrefix(text, "'") && strings.HasSuffix(text, "'") {
+			typ = termExactBoundary
+			if fuzzy {
+				text = text[1:]
+			}
+			text = text[:len(text)-1]
+		} else if strings.HasPrefix(text, "'") {
 			// Flip exactness
 			if fuzzy && !inv {
 				typ = termExact
-- 
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