textimg: Emoji TTF font setting not working

Yeah last comment there is 6 years ago and they are talking about unicode v3/4 while we are at Unicode 15 now. This library will not support emoji anytime soon if ever. So either i will stay that way or maybe anoter more modern lib can be used.

hmm…

• Alphabet is OK
• Emoji is NG

package main

import (
	"fmt"
	"strings"
)

func main() {
	// alphabet
	const startAlphabetCodePoint rune = 'A'
	const endAlphabetCodePoint rune = 'z'
	var sb strings.Builder
	appendRangeStrings(&sb, startAlphabetCodePoint, endAlphabetCodePoint)

	// emoji
	const startEmojiCodePoint rune = 0x1f600
	const endEmojiCodePoint = startEmojiCodePoint + 1000
	appendRangeStrings(&sb, startEmojiCodePoint, endEmojiCodePoint)
	fmt.Println(sb.String())
}

func appendRangeStrings(sb *strings.Builder, s, e rune) {
	counter := 1
	for i := s; i <= e; i++ {
		r := []rune{i}
		s := string(r)
		sb.WriteString(s)
		if counter%50 == 0 {
			sb.WriteString("\n")
		}
		counter++
	}
	sb.WriteString("\n")
}

$ go run main.go
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqr
stuvwxyz
😀😁😂😃😄😅😆😇😈😉😊😋😌😍😎😏😐😑😒😓😔😕😖😗😘😙😚😛😜😝😞😟😠😡😢😣😤😥😦😧😨😩😪😫😬😭😮😯😰😱
😲😳😴😵😶😷😸😹😺😻😼😽😾😿🙀🙁🙂🙃🙄🙅🙆🙇🙈🙉🙊🙋🙌🙍🙎🙏🙐🙑🙒🙓🙔🙕🙖🙗🙘🙙🙚🙛🙜🙝🙞🙟🙠🙡🙢🙣
🙤🙥🙦🙧🙨🙩🙪🙫🙬🙭🙮🙯🙰🙱🙲🙳🙴🙵🙶🙷🙸🙹🙺🙻🙼🙽🙾🙿🚀🚁🚂🚃🚄🚅🚆🚇🚈🚉🚊🚋🚌🚍🚎🚏🚐🚑🚒🚓🚔🚕
🚖🚗🚘🚙🚚🚛🚜🚝🚞🚟🚠🚡🚢🚣🚤🚥🚦🚧🚨🚩🚪🚫🚬🚭🚮🚯🚰🚱🚲🚳🚴🚵🚶🚷🚸🚹🚺🚻🚼🚽🚾🚿🛀🛁🛂🛃🛄🛅🛆🛇
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🜬🜭🜮🜯🜰🜱🜲🜳🜴🜵🜶🜷🜸🜹🜺🜻🜼🜽🜾🜿🝀🝁🝂🝃🝄🝅🝆🝇🝈🝉🝊🝋🝌🝍🝎🝏🝐🝑🝒🝓🝔🝕🝖🝗🝘🝙🝚🝛🝜🝝
🝞🝟🝠🝡🝢🝣🝤🝥🝦🝧🝨🝩🝪🝫🝬🝭🝮🝯🝰🝱🝲🝳🝴🝵🝶🝷🝸🝹🝺🝻🝼🝽🝾🝿🞀🞁🞂🞃🞄🞅🞆🞇🞈🞉🞊🞋🞌🞍🞎🞏
🞐🞑🞒🞓🞔🞕🞖🞗🞘🞙🞚🞛🞜🞝🞞🞟🞠🞡🞢🞣🞤🞥🞦🞧🞨🞩🞪🞫🞬🞭🞮🞯🞰🞱🞲🞳🞴🞵🞶🞷🞸🞹🞺🞻🞼🞽🞾🞿🟀🟁
🟂🟃🟄🟅🟆🟇🟈🟉🟊🟋🟌🟍🟎🟏🟐🟑🟒🟓🟔🟕🟖🟗🟘🟙🟚🟛🟜🟝🟞🟟🟠🟡🟢🟣🟤🟥🟦🟧🟨🟩🟪🟫🟬🟭🟮🟯🟰🟱🟲🟳
🟴🟵🟶🟷🟸🟹🟺🟻🟼🟽🟾🟿🠀🠁🠂🠃🠄🠅🠆🠇🠈🠉🠊🠋🠌🠍🠎🠏🠐🠑🠒🠓🠔🠕🠖🠗🠘🠙🠚🠛🠜🠝🠞🠟🠠🠡🠢🠣🠤🠥
🠦🠧🠨🠩🠪🠫🠬🠭🠮🠯🠰🠱🠲🠳🠴🠵🠶🠷🠸🠹🠺🠻🠼🠽🠾🠿🡀🡁🡂🡃🡄🡅🡆🡇🡈🡉🡊🡋🡌🡍🡎🡏🡐🡑🡒🡓🡔🡕🡖🡗
🡘🡙🡚🡛🡜🡝🡞🡟🡠🡡🡢🡣🡤🡥🡦🡧🡨🡩🡪🡫🡬🡭🡮🡯🡰🡱🡲🡳🡴🡵🡶🡷🡸🡹🡺🡻🡼🡽🡾🡿🢀🢁🢂🢃🢄🢅🢆🢇🢈🢉
🢊🢋🢌🢍🢎🢏🢐🢑🢒🢓🢔🢕🢖🢗🢘🢙🢚🢛🢜🢝🢞🢟🢠🢡🢢🢣🢤🢥🢦🢧🢨🢩🢪🢫🢬🢭🢮🢯🢰🢱🢲🢳🢴🢵🢶🢷🢸🢹🢺🢻
🢼🢽🢾🢿🣀🣁🣂🣃🣄🣅🣆🣇🣈🣉🣊🣋🣌🣍🣎🣏🣐🣑🣒🣓🣔🣕🣖🣗🣘🣙🣚🣛🣜🣝🣞🣟🣠🣡🣢🣣🣤🣥🣦🣧🣨🣩🣪🣫🣬🣭
🣮🣯🣰🣱🣲🣳🣴🣵🣶🣷🣸🣹🣺🣻🣼🣽🣾🣿🤀🤁🤂🤃🤄🤅🤆🤇🤈🤉🤊🤋🤌🤍🤎🤏🤐🤑🤒🤓🤔🤕🤖🤗🤘🤙🤚🤛🤜🤝🤞🤟
🤠🤡🤢🤣🤤🤥🤦🤧🤨🤩🤪🤫🤬🤭🤮🤯🤰🤱🤲🤳🤴🤵🤶🤷🤸🤹🤺🤻🤼🤽🤾🤿🥀🥁🥂🥃🥄🥅🥆🥇🥈🥉🥊🥋🥌🥍🥎🥏🥐🥑
🥒🥓🥔🥕🥖🥗🥘🥙🥚🥛🥜🥝🥞🥟🥠🥡🥢🥣🥤🥥🥦🥧🥨🥩🥪🥫🥬🥭🥮🥯🥰🥱🥲🥳🥴🥵🥶🥷🥸🥹🥺🥻🥼🥽🥾🥿🦀🦁🦂🦃
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🦶🦷🦸🦹🦺🦻🦼🦽🦾🦿🧀🧁🧂🧃🧄🧅🧆🧇🧈🧉🧊🧋🧌🧍🧎🧏🧐🧑🧒🧓🧔🧕🧖🧗🧘🧙🧚🧛🧜🧝🧞🧟🧠🧡🧢🧣🧤🧥🧦🧧
🧨

$ go run main.go | textimg -i -e /usr/share/fonts/truetype/noto/NotoColorEmoji.ttf -o ~/Downloads/emoji.png

Result:

Emoji using TTF files cannot be drawn.

It may be a font reading TTF, TTC or rendering problem. Please give me a few days.

hmm? The -e option is working.

textimg -e /usr/share/fonts/truetype/noto/NotoColorEmoji.ttf あいうえお😀 -io /images/a.png
textimg -e /usr/share/fonts/truetype/ancient-scripts/Symbola_hint.ttf あいうえお😀 -io /images/b.png

a.png:

b.png:

textimg -e a.ttf あいうえお😀 -io /images/c.png

2023/02/11 07:02:23 textimg [WARN] /root/go/pkg/mod/github.com/jiro4989/textimg/v3@v3.1.8/config/face.go:42 a.ttf is not found. please set font path with -f option

Please forgive me for my untruthful reading of the issues.🙇 I will investigate the cause of the bug.

I finally understand. Indeed, TEXTIMG_EMOJI_FONT_FILE is not working as you said.

textimg あいうえお😀 -o /images/a.png
export TEXTIMG_EMOJI_FONT_FILE='sushi.ttf'
textimg あいうえお😀 -o /images/b.png

2023/02/11 06:15:30 textimg [WARN] /root/go/pkg/mod/github.com/jiro4989/textimg/v3@v3.1.8/config/face.go:42 sushi.ttf is not found. please set font path with -f option

a.png:

b.png:

It has the wrong warning message and the wrong font priority. This is a textimg bug.

If you want to draw Japanese, set TEXTIMG_FONT_FILE to a font that supports Japanese. TEXTIMG_FONT_FILE is used for drawing non-emoticons.

See: https://github.com/jiro4989/textimg#fonts

I don’t think it’s related to the OS flavor.

I don’t know ArchLinux’s font folder. I don’t even know what fonts will be installed.

You can draw Japanese with these fonts.

https://github.com/jiro4989/textimg/blob/80e940a6926266beb65b371b19b9202b7d1028ed/config/config.go#L62-L69

I don’t have an Arch Linux environment, so I can’t test it. Solve the problem yourself.

Probably, I think that the JoyPixels font does not support Japanese.

/usr/share/fonts/joypixels/JoyPixels.ttf