From 358e09d97bab4e4c7f494e4e17ba76b6eac194f6 Mon Sep 17 00:00:00 2001
From: Francis Lavoie <lavofr@gmail.com>
Date: Wed, 17 Apr 2024 12:16:51 -0400
Subject: Compat with #6113: fix adapt test, set both styles in replacer

---
 ...rthand_parameterized_placeholders.caddyfiletest |  1 +
 modules/caddyhttp/matchers.go                      | 24 +++++++++++++---------
 2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/caddytest/integration/caddyfile_adapt/shorthand_parameterized_placeholders.caddyfiletest b/caddytest/integration/caddyfile_adapt/shorthand_parameterized_placeholders.caddyfiletest
index 30bc2c128..ef8d2330b 100644
--- a/caddytest/integration/caddyfile_adapt/shorthand_parameterized_placeholders.caddyfiletest
+++ b/caddytest/integration/caddyfile_adapt/shorthand_parameterized_placeholders.caddyfiletest
@@ -36,6 +36,7 @@ respond @match "{re.1}"
 											"match": [
 												{
 													"path_regexp": {
+														"name": "match",
 														"pattern": "^/foo(.*)$"
 													}
 												}
diff --git a/modules/caddyhttp/matchers.go b/modules/caddyhttp/matchers.go
index 23dc6e8a8..b1da14686 100644
--- a/modules/caddyhttp/matchers.go
+++ b/modules/caddyhttp/matchers.go
@@ -1309,7 +1309,6 @@ type MatchRegexp struct {
 	Pattern string `json:"pattern"`
 
 	compiled *regexp.Regexp
-	phPrefix string
 }
 
 // Provision compiles the regular expression.
@@ -1319,10 +1318,6 @@ func (mre *MatchRegexp) Provision(caddy.Context) error {
 		return fmt.Errorf("compiling matcher regexp %s: %v", mre.Pattern, err)
 	}
 	mre.compiled = re
-	mre.phPrefix = regexpPlaceholderPrefix
-	if mre.Name != "" {
-		mre.phPrefix += "." + mre.Name
-	}
 	return nil
 }
 
@@ -1346,16 +1341,25 @@ func (mre *MatchRegexp) Match(input string, repl *caddy.Replacer) bool {
 
 	// save all capture groups, first by index
 	for i, match := range matches {
-		key := mre.phPrefix + "." + strconv.Itoa(i)
-		repl.Set(key, match)
+		keySuffix := "." + strconv.Itoa(i)
+		if mre.Name != "" {
+			repl.Set(regexpPlaceholderPrefix+"."+mre.Name+keySuffix, match)
+		}
+		repl.Set(regexpPlaceholderPrefix+keySuffix, match)
 	}
 
 	// then by name
 	for i, name := range mre.compiled.SubexpNames() {
-		if i != 0 && name != "" {
-			key := mre.phPrefix + "." + name
-			repl.Set(key, matches[i])
+		// skip the first element (the full match), and empty names
+		if i == 0 || name == "" {
+			continue
+		}
+
+		keySuffix := "." + name
+		if mre.Name != "" {
+			repl.Set(regexpPlaceholderPrefix+"."+mre.Name+keySuffix, matches[i])
 		}
+		repl.Set(regexpPlaceholderPrefix+keySuffix, matches[i])
 	}
 
 	return true
-- 
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