update to latest sconf, for improved error messages for mixed tab/space indenting in config files

based on chat with niklas/broitzer

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/mjl-/adns v0.0.0-20240509092456-2dc8715bf4af
 	github.com/mjl-/autocert v0.0.0-20231214125928-31b7400acb05
 	github.com/mjl-/bstore v0.0.6
-	github.com/mjl-/sconf v0.0.6
+	github.com/mjl-/sconf v0.0.7
 	github.com/mjl-/sherpa v0.6.7
 	github.com/mjl-/sherpadoc v0.0.16
 	github.com/mjl-/sherpaprom v0.0.2

go.sum

@@ -30,8 +30,8 @@ github.com/mjl-/autocert v0.0.0-20231214125928-31b7400acb05 h1:s6ay4bh4tmpPLdxjy
 github.com/mjl-/autocert v0.0.0-20231214125928-31b7400acb05/go.mod h1:taMFU86abMxKLPV4Bynhv8enbYmS67b8LG80qZv2Qus=
 github.com/mjl-/bstore v0.0.6 h1:ntlu9MkfCkpm2XfBY4+Ws4KK9YzXzewr3+lCueFB+9c=
 github.com/mjl-/bstore v0.0.6/go.mod h1:/cD25FNBaDfvL/plFRxI3Ba3E+wcB0XVOS8nJDqndg0=
-github.com/mjl-/sconf v0.0.6 h1:5Dt58488ZOoVx680zgK2K3vUrokLsp5mXDUACrJlrUc=
+github.com/mjl-/sconf v0.0.7 h1:bdBcSFZCDFMm/UdBsgNCsjkYmKrSgYwp7rAOoufwHe4=
-github.com/mjl-/sconf v0.0.6/go.mod h1:uF8OdWtLT8La3i4ln176i1pB0ps9pXGCaABEU55ZkE0=
+github.com/mjl-/sconf v0.0.7/go.mod h1:uF8OdWtLT8La3i4ln176i1pB0ps9pXGCaABEU55ZkE0=
 github.com/mjl-/sherpa v0.6.7 h1:C5F8XQdV5nCuS4fvB+ye/ziUQrajEhOoj/t2w5T14BY=
 github.com/mjl-/sherpa v0.6.7/go.mod h1:dSpAOdgpwdqQZ72O4n3EHo/tR68eKyan8tYYraUMPNc=
 github.com/mjl-/sherpadoc v0.0.0-20190505200843-c0a7f43f5f1d/go.mod h1:5khTKxoKKNXcB8bkVUO6GlzC7PFtMmkHq578lPbmnok=

vendor/github.com/mjl-/sconf/parse.go

@@ -225,20 +225,24 @@ func (p *parser) parseStruct0(v reflect.Value) {
 			var more string
 			if strings.TrimSpace(s) == "" {
 				more = " (perhaps stray whitespace)"
+			} else if strings.HasPrefix(l[0], " ") {
+				more = " (perhaps mixed tab/space indenting)"
 			}
-			p.stop(fmt.Sprintf("missing colon for key/value on non-empty line %q%s", origs, more))
+			p.stop(fmt.Sprintf("missing colon for struct key/value on non-empty line %q%s", origs, more))
 		}
 		k := l[0]
 		if k == "" {
-			p.stop("empty key")
+			p.stop("empty key in struct")
+		} else if strings.HasPrefix(k, " ") {
+			p.stop("key in struct starting with space (perhaps mixed tab/space indenting)")
 		}
 		if _, ok := seen[k]; ok {
-			p.stop("duplicate key")
+			p.stop("duplicate key in struct")
 		}
 		seen[k] = struct{}{}
 		s = l[1]
 		if s != "" && !strings.HasPrefix(s, " ") {
-			p.stop("missing space after colon")
+			p.stop("missing space after colon in struct")
 		}
 		if s != "" {
 			s = s[1:]
@@ -288,20 +292,26 @@ func (p *parser) parseMap0(v reflect.Value) {
 			var more string
 			if strings.TrimSpace(s) == "" {
 				more = " (perhaps stray whitespace)"
+			} else if strings.HasPrefix(l[0], " ") {
+				more = " (perhaps mixed tab/space indenting)"
 			}
-			p.stop(fmt.Sprintf("missing colon for key/value on non-empty line %q%s", origs, more))
+			p.stop(fmt.Sprintf("missing colon for map key/value on non-empty line %q%s", origs, more))
 		}
 		k := l[0]
 		if k == "" {
-			p.stop("empty key")
+			p.stop("empty key in map")
 		}
 		if _, ok := seen[k]; ok {
-			p.stop("duplicate key")
+			p.stop("duplicate key in map")
 		}
 		seen[k] = struct{}{}
 		s = l[1]
 		if s != "" && !strings.HasPrefix(s, " ") {
-			p.stop("missing space after colon")
+			var more string
+			if strings.HasPrefix(k, " ") {
+				more = " (key starts with space, perhaps mixed tab/space indenting)"
+			}
+			p.stop("missing space after colon in map" + more)
 		}
 		if s != "" {
 			s = s[1:]

vendor/modules.txt

@@ -19,7 +19,7 @@ github.com/mjl-/autocert
 # github.com/mjl-/bstore v0.0.6
 ## explicit; go 1.19
 github.com/mjl-/bstore
-# github.com/mjl-/sconf v0.0.6
+# github.com/mjl-/sconf v0.0.7
 ## explicit; go 1.12
 github.com/mjl-/sconf
 # github.com/mjl-/sherpa v0.6.7