http: Remove {...query_string} placeholder, in favor of {...query}

I am not sure if the query_string one is necessary or useful yet. We
can always add it later if needed.

caddyconfig/httpcaddyfile/httptype.go

@@ -101,7 +101,7 @@ func (st ServerType) Setup(originalServerBlocks []caddyfile.ServerBlock,
 			"{scheme}", "{http.request.scheme}",
 			"{file}", "{http.request.uri.path.file}",
 			"{dir}", "{http.request.uri.path.dir}",
-			"{query}", "{http.request.uri.query_string}",
+			"{query}", "{http.request.uri.query}",
 		)
 		for _, segment := range sb.block.Segments {
 			for i := 0; i < len(segment); i++ {

modules/caddyhttp/caddyhttp.go

@@ -66,7 +66,6 @@ func init() {
 // `{http.request.orig.path.dir}` | The request's original directory
 // `{http.request.orig.path.file}` | The request's original filename
 // `{http.request.orig.uri.path}` | The request's original path
-// `{http.request.orig.uri.query_string}` | The request's original full query string (with `?`)
 // `{http.request.orig.uri.query}` | The request's original query string (without `?`)
 // `{http.request.orig.uri}` | The request's original URI
 // `{http.request.port}` | The port part of the request's Host header
@@ -79,7 +78,6 @@ func init() {
 // `{http.request.uri.path.dir}` | The directory, excluding leaf filename
 // `{http.request.uri.path.file}` | The filename of the path, excluding directory
 // `{http.request.uri.path}` | The path component of the request URI
-// `{http.request.uri.query_string}` | The full query string (with `?`)
 // `{http.request.uri.query.*}` | Individual query string value
 // `{http.request.uri.query}` | The query string (without `?`)
 // `{http.request.uri}` | The full request URI

modules/caddyhttp/replacer.go

@@ -104,8 +104,6 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
 				return dir, true
 			case "http.request.uri.query":
 				return req.URL.RawQuery, true
-			case "http.request.uri.query_string":
-				return "?" + req.URL.RawQuery, true
 
 				// original request, before any internal changes
 			case "http.request.orig_method":
@@ -128,9 +126,6 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
 			case "http.request.orig_uri.query":
 				or, _ := req.Context().Value(OriginalRequestCtxKey).(http.Request)
 				return or.URL.RawQuery, true
-			case "http.request.orig_uri.query_string":
-				or, _ := req.Context().Value(OriginalRequestCtxKey).(http.Request)
-				return "?" + or.URL.RawQuery, true
 			}
 
 			// hostname labels

modules/caddyhttp/reverseproxy/fastcgi/caddyfile.go

@@ -149,7 +149,7 @@ func parsePHPFastCGI(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error
 		}),
 	}
 	rewriteHandler := rewrite.Rewrite{
-		URI: "{http.matchers.file.relative}{http.request.uri.query_string}",
+		URI: "{http.matchers.file.relative}?{http.request.uri.query}",
 	}
 	rewriteRoute := caddyhttp.Route{
 		MatcherSetsRaw: []caddy.ModuleMap{rewriteMatcherSet},