shithub: hugo

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tpl: Fix bad rounding in NumFmt

strconv.FormatFloat doesn't round properly sometimes, this adds a
different method of rounding, fixes #7116

--- a/tpl/lang/lang.go

+++ b/tpl/lang/lang.go

@@ -102,10 +102,13 @@

 		}

 	}

+	exp := math.Pow(10.0, float64(prec))

+	r := math.Round(n*exp) / exp

+

 	// Logic from MIT Licensed github.com/go-playground/locales/

 	// Original Copyright (c) 2016 Go Playground

-	s := strconv.FormatFloat(math.Abs(n), 'f', prec, 64)

+	s := strconv.FormatFloat(math.Abs(r), 'f', prec, 64)

 	L := len(s) + 2 + len(s[:len(s)-1-prec])/3

 	var count int

--- a/tpl/lang/lang_test.go

+++ b/tpl/lang/lang_test.go

@@ -29,6 +29,10 @@

 		{0, 12345.6789, "- . ,", "", "12,346"},

 		{11, -12345.6789, "- . ,", "", "-12,345.67890000000"},

+		{2, 927.675, "- .", "", "927.68"},

+		{2, 1927.675, "- .", "", "1927.68"},

+		{2, 2927.675, "- .", "", "2927.68"},

+

 		{3, -12345.6789, "- ,", "", "-12345,679"},

 		{6, -12345.6789, "- , .", "", "-12.345,678900"},