## 事象
以下のコードを書く。
```rust
fn main() {
let numbers = [1..10].map(|x| x * 2).collect::<Vec<_>>();
}
```
期待する描画。
![[Pasted image 20240302182048.png]]
実際の描画。
![[Pasted image 20240302182132.png]]
### 環境
- [[Windows Terminal 1.19]] (1.19.10573.0)
- [[Ubuntu 22.04 LTS(Jammy Jellyfish)]] (22.04.3)
- [[Neovim]] v0.9.5
```console
$ echo $TERM
xterm-256color
```
> [!code]- `infocmp -x`の結果
>
> ```console
> $ infocmp -x
> # Reconstructed via infocmp from file: /home/tadashi-aikawa/.terminfo/x/xterm-256color
> xterm-256color|xterm with 256 colors,
> am, bce, ccc, km, mc5i, mir, msgr, npc, xenl,
> colors#0x100, cols#80, it#8, lines#24, pairs#0x10000,
> acsc=``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
> bel=^G, blink=\E[5m, bold=\E[1m, cbt=\E[Z, civis=\E[?25l,
> clear=\E[H\E[2J, cnorm=\E[?12l\E[?25h, cr=\r,
> csr=\E[%i%p1%d;%p2%dr, cub=\E[%p1%dD, cub1=^H,
> cud=\E[%p1%dB, cud1=\n, cuf=\E[%p1%dC, cuf1=\E[C,
> cup=\E[%i%p1%d;%p2%dH, cuu=\E[%p1%dA, cuu1=\E[A,
> cvvis=\E[?12;25h, dch=\E[%p1%dP, dch1=\E[P, dim=\E[2m,
> dl=\E[%p1%dM, dl1=\E[M, ech=\E[%p1%dX, ed=\E[J, el=\E[K,
> el1=\E[1K, flash=\E[?5h
lt;100/>\E[?5l, home=\E[H,
> hpa=\E[%i%p1%dG, ht=^I, hts=\EH, ich=\E[%p1%d@,
> il=\E[%p1%dL, il1=\E[L, ind=\n, indn=\E[%p1%dS,
> initc=\E]4;%p1%d;rgb:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\,
> invis=\E[8m, is2=\E[!p\E[?3;4l\E[4l\E>, kDC=\E[3;2~,
> kEND=\E[1;2F, kHOM=\E[1;2H, kIC=\E[2;2~, kLFT=\E[1;2D,
> kNXT=\E[6;2~, kPRV=\E[5;2~, kRIT=\E[1;2C, ka1=\EOw,
> ka3=\EOy, kb2=\EOu, kbeg=\EOE, kbs=^?, kc1=\EOq, kc3=\EOs,
> kcbt=\E[Z, kcub1=\EOD, kcud1=\EOB, kcuf1=\EOC, kcuu1=\EOA,
> kdch1=\E[3~, kend=\EOF, kent=\EOM, kf1=\EOP, kf10=\E[21~,
> kf11=\E[23~, kf12=\E[24~, kf13=\E[1;2P, kf14=\E[1;2Q,
> kf15=\E[1;2R, kf16=\E[1;2S, kf17=\E[15;2~, kf18=\E[17;2~,
> kf19=\E[18;2~, kf2=\EOQ, kf20=\E[19;2~, kf21=\E[20;2~,
> kf22=\E[21;2~, kf23=\E[23;2~, kf24=\E[24;2~,
> kf25=\E[1;5P, kf26=\E[1;5Q, kf27=\E[1;5R, kf28=\E[1;5S,
> kf29=\E[15;5~, kf3=\EOR, kf30=\E[17;5~, kf31=\E[18;5~,
> kf32=\E[19;5~, kf33=\E[20;5~, kf34=\E[21;5~,
> kf35=\E[23;5~, kf36=\E[24;5~, kf37=\E[1;6P, kf38=\E[1;6Q,
> kf39=\E[1;6R, kf4=\EOS, kf40=\E[1;6S, kf41=\E[15;6~,
> kf42=\E[17;6~, kf43=\E[18;6~, kf44=\E[19;6~,
> kf45=\E[20;6~, kf46=\E[21;6~, kf47=\E[23;6~,
> kf48=\E[24;6~, kf49=\E[1;3P, kf5=\E[15~, kf50=\E[1;3Q,
> kf51=\E[1;3R, kf52=\E[1;3S, kf53=\E[15;3~, kf54=\E[17;3~,
> kf55=\E[18;3~, kf56=\E[19;3~, kf57=\E[20;3~,
> kf58=\E[21;3~, kf59=\E[23;3~, kf6=\E[17~, kf60=\E[24;3~,
> kf61=\E[1;4P, kf62=\E[1;4Q, kf63=\E[1;4R, kf7=\E[18~,
> kf8=\E[19~, kf9=\E[20~, khome=\EOH, kich1=\E[2~,
> kind=\E[1;2B, kmous=\E[<, knp=\E[6~, kpp=\E[5~,
> kri=\E[1;2A, mc0=\E[i, mc4=\E[4i, mc5=\E[5i, mgc=\E[?69l,
> nel=\EE, oc=\E]104\007, op=\E[39;49m, rc=\E8,
> rep=%p1%c\E[%p2%{1}%-%db, rev=\E[7m, ri=\EM,
> rin=\E[%p1%dT, ritm=\E[23m, rmacs=\E(B, rmam=\E[?7l,
> rmcup=\E[?1049l\E[23;0;0t, rmir=\E[4l, rmkx=\E[?1l\E>,
> rmm=\E[?1034l, rmso=\E[27m, rmul=\E[24m,
> rs1=\Ec\E]104\007, rs2=\E[!p\E[?3;4l\E[4l\E>, sc=\E7,
> setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m,
> setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m,
> sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p5%t;2%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,
> sgr0=\E(B\E[m, sitm=\E[3m, smacs=\E(0, smam=\E[?7h,
> smcup=\E[?1049h\E[22;0;0t, smglp=\E[?69h\E[%i%p1%ds,
> smglr=\E[?69h\E[%i%p1%d;%p2%ds,
> smgrp=\E[?69h\E[%i;%p1%ds, smir=\E[4h, smkx=\E[?1h\E=,
> smm=\E[?1034h, smso=\E[7m, smul=\E[4m, tbc=\E[3g,
> u6=\E[%i%d;%dR, u7=\E[6n, u8=\E[?%[;0123456789]c,
> u9=\E[c, vpa=\E[%i%p1%dd,
> ```
>
### 備考
[[Windows Terminal 1.19]]でこれらのテキスト装飾は対応されており、以下のコマンドで表示されることは確認済。
```bash
printf "\x1b[58:2::255:0:0m\x1b[4:1msingle\x1b[4:2mdouble\x1b[4:3mcurly\x1b[4:4mdotted\x1b[4:5mdashed\x1b[0m\n"
```
![[Pasted image 20240302172315.png]]
## 原因
[[Windows Terminalが推奨するterminfoはxterm-256color]]であるが、[[xterm-256color]]には今回使用したいテキスト修飾定義がされていない。
<div class="link-card">
<div class="link-card-header">
<img src="https://github.githubassets.com/favicons/favicon.svg" class="link-card-site-icon"/>
<span class="link-card-site-name">GitHub</span>
</div>
<div class="link-card-body">
<div class="link-card-content">
<p class="link-card-title">Implementing undercurl support in windows terminal · Issue #26744 · neovim/neovim</p>
<p class="link-card-description">Problem Windows did not support underline syles other than the regular one. no und ... </p>
</div>
<img src="https://opengraph.githubassets.com/9fff6f09d681d32ab83c2a9d91f46f0da89a1222db86da3443d8b5b3c803fa96/neovim/neovim/issues/26744" class="link-card-image" />
</div>
<a href="https://github.com/neovim/neovim/issues/26744"></a>
</div>
具体的には以下の設定が必要。
```
Smulx=\E[4:%p1%dm
```
## 解決方法
### 回避策1 (推奨)
[[xterm-256color]]をベースにした新しい[[terminfo]]を作成し、`Smulx=\E[4:%p1%dm`の設定を追加する。
<div class="link-card">
<div class="link-card-header">
<img src="https://cdn.sstatic.net/Sites/superuser/Img/favicon.ico?v=4852d6fb3f5d" class="link-card-site-icon"/>
<span class="link-card-site-name">Super User</span>
</div>
<div class="link-card-body">
<div class="link-card-content">
<p class="link-card-title">Enable unofficial terminfo extensions in tmux</p>
<p class="link-card-description">What must I do to make the escape sequence for double-underlining \E[4:2m work with tmux? It works in my terminal (mintty) outside of tmux and I successfully ad ... </p>
</div>
<img src="https://cdn.sstatic.net/Sites/superuser/Img/