Fix raw TOML dates in where/eq

Note that this has only been a problem with "raw dates" in TOML files in /data and similar. The predefined front matter
dates `.Date` etc. are converted to a Go Time and has worked fine even after upgrading to v2 of the go-toml lib.

Fixes #9979

12 files changed, 71 insertions, 51 deletions

diff --git a/tpl/collections/append_test.go b/tpl/collections/append_test.go
index 02e46039f..232781522 100644
--- a/tpl/collections/append_test.go
+++ b/tpl/collections/append_test.go
@@ -18,7 +18,9 @@ import (
 	"testing"
 
 	qt "github.com/frankban/quicktest"
+	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/deps"
+	"github.com/gohugoio/hugo/langs"
 )
 
 // Also see tests in common/collection.
@@ -26,7 +28,7 @@ func TestAppend(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		start    any
diff --git a/tpl/collections/apply_test.go b/tpl/collections/apply_test.go
index 315f2bc85..2c7783fd9 100644
--- a/tpl/collections/apply_test.go
+++ b/tpl/collections/apply_test.go
@@ -21,7 +21,9 @@ import (
 	"testing"
 
 	qt "github.com/frankban/quicktest"
+	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/deps"
+	"github.com/gohugoio/hugo/langs"
 	"github.com/gohugoio/hugo/output"
 	"github.com/gohugoio/hugo/tpl"
 )
@@ -67,7 +69,7 @@ func (templateFinder) GetFunc(name string) (reflect.Value, bool) {
 func TestApply(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	d := &deps.Deps{}
+	d := &deps.Deps{Language: langs.NewDefaultLanguage(config.New())}
 	d.SetTmpl(new(templateFinder))
 	ns := New(d)
 
diff --git a/tpl/collections/collections.go b/tpl/collections/collections.go
index 8fdc85275..299a504f4 100644
--- a/tpl/collections/collections.go
+++ b/tpl/collections/collections.go
@@ -31,6 +31,8 @@ import (
 	"github.com/gohugoio/hugo/common/types"
 	"github.com/gohugoio/hugo/deps"
 	"github.com/gohugoio/hugo/helpers"
+	"github.com/gohugoio/hugo/langs"
+	"github.com/gohugoio/hugo/tpl/compare"
 	"github.com/spf13/cast"
 )
 
@@ -41,14 +43,24 @@ func init() {
 
 // New returns a new instance of the collections-namespaced template functions.
 func New(deps *deps.Deps) *Namespace {
+	if deps.Language == nil {
+		panic("language must be set")
+	}
+
+	loc := langs.GetLocation(deps.Language)
+
 	return &Namespace{
-		deps: deps,
+		loc:      loc,
+		sortComp: compare.New(loc, true),
+		deps:     deps,
 	}
 }
 
 // Namespace provides template functions for the "collections" namespace.
 type Namespace struct {
-	deps *deps.Deps
+	loc      *time.Location
+	sortComp *compare.Namespace
+	deps     *deps.Deps
 }
 
 // After returns all the items after the first N in a rangeable list.
diff --git a/tpl/collections/collections_test.go b/tpl/collections/collections_test.go
index bcc2855c7..fd78da6d4 100644
--- a/tpl/collections/collections_test.go
+++ b/tpl/collections/collections_test.go
@@ -40,7 +40,7 @@ func TestAfter(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		index  any
@@ -97,7 +97,7 @@ func (g *tstGrouper2) Group(key any, items any) (any, error) {
 func TestGroup(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		key    any
@@ -187,7 +187,7 @@ func TestDelimit(t *testing.T) {
 func TestDictionary(t *testing.T) {
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		values []any
@@ -226,7 +226,7 @@ func TestDictionary(t *testing.T) {
 func TestReverse(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	s := []string{"a", "b", "c"}
 	reversed, err := ns.Reverse(s)
@@ -245,7 +245,7 @@ func TestEchoParam(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		a      any
@@ -277,7 +277,7 @@ func TestFirst(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		limit  any
@@ -315,7 +315,7 @@ func TestIn(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		l1     any
@@ -391,7 +391,7 @@ func TestIntersect(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		l1, l2 any
@@ -518,7 +518,7 @@ func TestLast(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		limit  any
@@ -557,7 +557,7 @@ func TestLast(t *testing.T) {
 func TestQuerify(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		params []any
@@ -591,7 +591,7 @@ func TestQuerify(t *testing.T) {
 }
 
 func BenchmarkQuerify(b *testing.B) {
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 	params := []any{"a", "b", "c", "d", "f", " &"}
 
 	b.ResetTimer()
@@ -604,7 +604,7 @@ func BenchmarkQuerify(b *testing.B) {
 }
 
 func BenchmarkQuerifySlice(b *testing.B) {
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 	params := []string{"a", "b", "c", "d", "f", " &"}
 
 	b.ResetTimer()
@@ -619,7 +619,7 @@ func BenchmarkQuerifySlice(b *testing.B) {
 func TestSeq(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		args   []any
@@ -663,7 +663,7 @@ func TestSeq(t *testing.T) {
 func TestShuffle(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		seq     any
@@ -703,7 +703,7 @@ func TestShuffle(t *testing.T) {
 func TestShuffleRandomising(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	// Note that this test can fail with false negative result if the shuffle
 	// of the sequence happens to be the same as the original sequence. However
@@ -734,7 +734,7 @@ func TestShuffleRandomising(t *testing.T) {
 func TestSlice(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		args     []any
@@ -758,7 +758,7 @@ func TestUnion(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		l1     any
@@ -847,7 +847,7 @@ func TestUnion(t *testing.T) {
 func TestUniq(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 	for i, test := range []struct {
 		l      any
 		expect any
@@ -979,6 +979,7 @@ func newDeps(cfg config.Provider) *deps.Deps {
 		panic(err)
 	}
 	return &deps.Deps{
+		Language:    l,
 		Cfg:         cfg,
 		Fs:          hugofs.NewMem(l),
 		ContentSpec: cs,
diff --git a/tpl/collections/complement_test.go b/tpl/collections/complement_test.go
index 92565bf28..6c13ab5c4 100644
--- a/tpl/collections/complement_test.go
+++ b/tpl/collections/complement_test.go
@@ -17,7 +17,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/deps"
+	"github.com/gohugoio/hugo/langs"
 
 	qt "github.com/frankban/quicktest"
 )
@@ -34,7 +36,7 @@ func TestComplement(t *testing.T) {
 
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	s1 := []TstX{{A: "a"}, {A: "b"}, {A: "d"}, {A: "e"}}
 	s2 := []TstX{{A: "b"}, {A: "e"}}
diff --git a/tpl/collections/index_test.go b/tpl/collections/index_test.go
index b9d5127ee..662fe6f33 100644
--- a/tpl/collections/index_test.go
+++ b/tpl/collections/index_test.go
@@ -18,6 +18,8 @@ import (
 	"testing"
 
 	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/config"
+	"github.com/gohugoio/hugo/langs"
 
 	qt "github.com/frankban/quicktest"
 	"github.com/gohugoio/hugo/deps"
@@ -26,7 +28,7 @@ import (
 func TestIndex(t *testing.T) {
 	t.Parallel()
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	for i, test := range []struct {
 		item    any
diff --git a/tpl/collections/merge_test.go b/tpl/collections/merge_test.go
index 14cca1ddd..e7a383126 100644
--- a/tpl/collections/merge_test.go
+++ b/tpl/collections/merge_test.go
@@ -19,7 +19,9 @@ import (
 	"testing"
 
 	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/deps"
+	"github.com/gohugoio/hugo/langs"
 	"github.com/gohugoio/hugo/parser"
 	"github.com/gohugoio/hugo/parser/metadecoders"
 
@@ -27,7 +29,7 @@ import (
 )
 
 func TestMerge(t *testing.T) {
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	simpleMap := map[string]any{"a": 1, "b": 2}
 
@@ -161,7 +163,7 @@ func TestMerge(t *testing.T) {
 
 func TestMergeDataFormats(t *testing.T) {
 	c := qt.New(t)
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	toml1 := `
 V1 = "v1_1"
diff --git a/tpl/collections/reflect_helpers.go b/tpl/collections/reflect_helpers.go
index 4178850aa..a295441ec 100644
--- a/tpl/collections/reflect_helpers.go
+++ b/tpl/collections/reflect_helpers.go
@@ -16,7 +16,6 @@ package collections
 import (
 	"fmt"
 	"reflect"
-	"time"
 
 	"errors"
 
@@ -26,7 +25,6 @@ import (
 var (
 	zero      reflect.Value
 	errorType = reflect.TypeOf((*error)(nil)).Elem()
-	timeType  = reflect.TypeOf((*time.Time)(nil)).Elem()
 )
 
 func numberToFloat(v reflect.Value) (float64, error) {
diff --git a/tpl/collections/sort.go b/tpl/collections/sort.go
index a0c2f815b..ce76a4522 100644
--- a/tpl/collections/sort.go
+++ b/tpl/collections/sort.go
@@ -25,8 +25,6 @@ import (
 	"github.com/spf13/cast"
 )
 
-var sortComp = compare.New(true)
-
 // Sort returns a sorted sequence.
 func (ns *Namespace) Sort(seq any, args ...any) (any, error) {
 	if seq == nil {
@@ -51,7 +49,7 @@ func (ns *Namespace) Sort(seq any, args ...any) (any, error) {
 	collator := langs.GetCollator(ns.deps.Language)
 
 	// Create a list of pairs that will be used to do the sort
-	p := pairList{Collator: collator, SortAsc: true, SliceType: sliceType}
+	p := pairList{Collator: collator, sortComp: ns.sortComp, SortAsc: true, SliceType: sliceType}
 	p.Pairs = make([]pair, seqv.Len())
 
 	var sortByField string
@@ -145,6 +143,7 @@ type pair struct {
 // A slice of pairs that implements sort.Interface to sort by Value.
 type pairList struct {
 	Collator  *langs.Collator
+	sortComp  *compare.Namespace
 	Pairs     []pair
 	SortAsc   bool
 	SliceType reflect.Type
@@ -159,16 +158,16 @@ func (p pairList) Less(i, j int) bool {
 	if iv.IsValid() {
 		if jv.IsValid() {
 			// can only call Interface() on valid reflect Values
-			return sortComp.LtCollate(p.Collator, iv.Interface(), jv.Interface())
+			return p.sortComp.LtCollate(p.Collator, iv.Interface(), jv.Interface())
 		}
 
 		// if j is invalid, test i against i's zero value
-		return sortComp.LtCollate(p.Collator, iv.Interface(), reflect.Zero(iv.Type()))
+		return p.sortComp.LtCollate(p.Collator, iv.Interface(), reflect.Zero(iv.Type()))
 	}
 
 	if jv.IsValid() {
 		// if i is invalid, test j against j's zero value
-		return sortComp.LtCollate(p.Collator, reflect.Zero(jv.Type()), jv.Interface())
+		return p.sortComp.LtCollate(p.Collator, reflect.Zero(jv.Type()), jv.Interface())
 	}
 
 	return false
diff --git a/tpl/collections/symdiff_test.go b/tpl/collections/symdiff_test.go
index c781ca040..e5494d5a0 100644
--- a/tpl/collections/symdiff_test.go
+++ b/tpl/collections/symdiff_test.go
@@ -17,7 +17,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/gohugoio/hugo/config"
 	"github.com/gohugoio/hugo/deps"
+	"github.com/gohugoio/hugo/langs"
 
 	qt "github.com/frankban/quicktest"
 )
@@ -27,7 +29,7 @@ func TestSymDiff(t *testing.T) {
 
 	c := qt.New(t)
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	s1 := []TstX{{A: "a"}, {A: "b"}}
 	s2 := []TstX{{A: "a"}, {A: "e"}}
diff --git a/tpl/collections/where.go b/tpl/collections/where.go
index 8a9df445d..2cf7227a0 100644
--- a/tpl/collections/where.go
+++ b/tpl/collections/where.go
@@ -107,11 +107,10 @@ func (ns *Namespace) checkCondition(v, mv reflect.Value, op string) (bool, error
 			fmv := mv.Float()
 			fmvp = &fmv
 		case reflect.Struct:
-			switch v.Type() {
-			case timeType:
-				iv := toTimeUnix(v)
+			if hreflect.IsTime(v.Type()) {
+				iv := ns.toTimeUnix(v)
 				ivp = &iv
-				imv := toTimeUnix(mv)
+				imv := ns.toTimeUnix(mv)
 				imvp = &imv
 			}
 		case reflect.Array, reflect.Slice:
@@ -167,12 +166,11 @@ func (ns *Namespace) checkCondition(v, mv reflect.Value, op string) (bool, error
 				}
 			}
 		case reflect.Struct:
-			switch v.Type() {
-			case timeType:
-				iv := toTimeUnix(v)
+			if hreflect.IsTime(v.Type()) {
+				iv := ns.toTimeUnix(v)
 				ivp = &iv
 				for i := 0; i < mv.Len(); i++ {
-					ima = append(ima, toTimeUnix(mv.Index(i)))
+					ima = append(ima, ns.toTimeUnix(mv.Index(i)))
 				}
 			}
 		case reflect.Array, reflect.Slice:
@@ -508,12 +506,10 @@ func toString(v reflect.Value) (string, error) {
 	return "", errors.New("unable to convert value to string")
 }
 
-func toTimeUnix(v reflect.Value) int64 {
-	if v.Kind() == reflect.Interface {
-		return toTimeUnix(v.Elem())
-	}
-	if v.Type() != timeType {
+func (ns *Namespace) toTimeUnix(v reflect.Value) int64 {
+	t, ok := hreflect.AsTime(v, ns.loc)
+	if !ok {
 		panic("coding error: argument must be time.Time type reflect Value")
 	}
-	return hreflect.GetMethodByName(v, "Unix").Call([]reflect.Value{})[0].Int()
+	return t.Unix()
 }
diff --git a/tpl/collections/where_test.go b/tpl/collections/where_test.go
index 395a90cb1..9a65de3d5 100644
--- a/tpl/collections/where_test.go
+++ b/tpl/collections/where_test.go
@@ -22,6 +22,8 @@ import (
 	"time"
 
 	"github.com/gohugoio/hugo/common/maps"
+	"github.com/gohugoio/hugo/config"
+	"github.com/gohugoio/hugo/langs"
 
 	"github.com/gohugoio/hugo/deps"
 )
@@ -29,7 +31,7 @@ import (
 func TestWhere(t *testing.T) {
 	t.Parallel()
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	type Mid struct {
 		Tst TstX
@@ -683,7 +685,7 @@ func TestWhere(t *testing.T) {
 func TestCheckCondition(t *testing.T) {
 	t.Parallel()
 
-	ns := New(&deps.Deps{})
+	ns := New(&deps.Deps{Language: langs.NewDefaultLanguage(config.New())})
 
 	type expect struct {
 		result  bool