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utf8 support in hyphenator, formatting for image descs

--- a/format.go

+++ b/format.go

@@ -10,7 +10,7 @@

 	width := readline.GetScreenWidth()

 	result, remainder := hyphenateline(input, width)

 	var cresult string

-	for len(remainder) > width-1 {

+	for len([]rune(remainder)) > width {

 		cresult, remainder = hyphenateline(remainder, width)

 		result += cresult

 	}

@@ -26,12 +26,12 @@

 	begin, _, _ := strings.Cut(input, "\n")

 	hyphenate := false

-	if len(begin) > width-1 {

-		begin = begin[:width-1]

+	if len([]rune(begin)) > width-1 {

+		begin = string([]rune(begin)[:width-1])

 		hyphenate = true

 	}

-	remainder := input[len(begin):]

+	remainder := string([]rune(input)[len([]rune(begin)):])

 	if hyphenate == true && begin[width-2] != ' ' {

 		begin += "-"

--- a/mastodon.go

+++ b/mastodon.go

@@ -205,7 +205,7 @@

 	for _, item := range media {

 		if item.Description != "" {

-			postfix += fmt.Sprintf("🖼️[%v]\n", item.Description)

+			postfix += fmt.Sprintf("\n🖼️[%v]", item.Description)

 			continue

 		}

 		postfix += "🖼️"

-- 

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