TermuxでのEmacs環境の整備を続けています。
Termux 上で Emacs を普段使いする為の設定 - Qiita
を読んでいて、曖昧幅なんてものもあったなぁ……と、手元のorgファイルの表の部分を見てみると……ありましたありました。メチャクチャ崩れています。○△×とか書く欄が表にあったらもうダメですね。どうしたら良いんだろう。
と、上のページをよく読むと
Termux が純粋な Linux アプリであれば、wcwidh()のハックにより解消出来ますが、Termux は Java アプリなのでハックの仕方が分かりません…。 (ソースを修正すべき箇所は多分ここです→ https://github.com/termux/termux-app/blob/master/terminal-emulator/src/main/java/com/termux/terminal/WcWidth.java)
おおお、そんな場所があるとは。幸いTermuxはビルドしたばかりですから直せるかもしれません。
hamano/locale-eaw: East Asian Ambiguous Width問題と絵文字の横幅問題の修正ロケール
ええと、このページからたどれるeaw.elをダウンロードして……ふむふむ、曖昧幅の文字と全角確定の文字を合わせて、その範囲のリストを作れば良さそうですね。
(let* ( ;; From https://github.com/hamano/locale-eaw/blob/master/eaw.el (east-asian-ambiguous '( #x00A1 ; Po INVERTED EXCLAMATION MARK #x00A4 ; Sc CURRENCY SIGN #x00A7 ; Po SECTION SIGN ;;...略... )) ;; From WIDE_EASTASIAN in termux-app/terminal-emulator/src/main/java/com/termux/terminal/WcWidth.java (east-asian-wide '( (#x01100 . #x0115f) ;; // Hangul Choseong Kiyeok ..Hangul Choseong Filler (#x0231a . #x0231b) ;; // Watch ..Hourglass ;;...略... (#x30000 . #x3fffd) ;; // (nil) ..(nil) )) (full-width-chars (sort (append (cl-loop for range in east-asian-wide nconc (cl-loop for c from (car range) to (cdr range) collect c)) east-asian-ambiguous) #'<))) (let ((p full-width-chars)) (while p (let ((first (car p)) (last (progn (while (and (cadr p) (or (= (car p) (cadr p)) ;;Omit duplication (= (1+ (car p)) (cadr p)))) (setq p (cdr p))) (car p)))) (insert (format "{0x%x, 0x%x},\n" first last)) (setq p (cdr p))))))
結果はこんな感じ。
{0xa1, 0xa1},
{0xa4, 0xa4},
{0xa7, 0xa8},
{0xaa, 0xaa},
{0xad, 0xae},
{0xb0, 0xb4},
{0xb6, 0xba},
{0xbc, 0xbf},
{0xc6, 0xc6},
{0xd0, 0xd0},
{0xd7, 0xd8},
{0xde, 0xe1},
{0xe6, 0xe6},
{0xe8, 0xea},
{0xec, 0xed},
{0xf0, 0xf0},
{0xf2, 0xf3},
{0xf7, 0xfa},
{0xfc, 0xfc},
{0xfe, 0xfe},
{0x101, 0x101},
{0x111, 0x111},
{0x113, 0x113},
{0x11b, 0x11b},
{0x126, 0x127},
{0x12b, 0x12b},
{0x131, 0x133},
{0x138, 0x138},
{0x13f, 0x142},
{0x144, 0x144},
{0x148, 0x14b},
{0x14d, 0x14d},
{0x152, 0x153},
{0x166, 0x167},
{0x16b, 0x16b},
{0x1ce, 0x1ce},
{0x1d0, 0x1d0},
{0x1d2, 0x1d2},
{0x1d4, 0x1d4},
{0x1d6, 0x1d6},
{0x1d8, 0x1d8},
{0x1da, 0x1da},
{0x1dc, 0x1dc},
{0x251, 0x251},
{0x261, 0x261},
{0x2c4, 0x2c4},
{0x2c7, 0x2c7},
{0x2c9, 0x2cb},
{0x2cd, 0x2cd},
{0x2d0, 0x2d0},
{0x2d8, 0x2db},
{0x2dd, 0x2dd},
{0x2df, 0x2df},
{0x391, 0x3a1},
{0x3a3, 0x3a9},
{0x3b1, 0x3c1},
{0x3c3, 0x3c9},
{0x401, 0x401},
{0x410, 0x44f},
{0x451, 0x451},
{0x1100, 0x115f},
{0x2010, 0x2010},
{0x2013, 0x2016},
{0x2018, 0x2019},
{0x201c, 0x201d},
{0x2020, 0x2022},
{0x2024, 0x2027},
{0x2030, 0x2030},
{0x2032, 0x2033},
{0x2035, 0x2035},
{0x203b, 0x203b},
{0x203e, 0x203e},
{0x2074, 0x2074},
{0x207f, 0x207f},
{0x2081, 0x2084},
{0x20ac, 0x20ac},
{0x2103, 0x2103},
{0x2105, 0x2105},
{0x2109, 0x2109},
{0x2113, 0x2113},
{0x2116, 0x2116},
{0x2121, 0x2122},
{0x2126, 0x2126},
{0x212b, 0x212b},
{0x2153, 0x2154},
{0x215b, 0x215e},
{0x2160, 0x216b},
{0x2170, 0x2179},
{0x2189, 0x2189},
{0x2190, 0x2199},
{0x21b8, 0x21b9},
{0x21d2, 0x21d2},
{0x21d4, 0x21d4},
{0x21e7, 0x21e7},
{0x2200, 0x2200},
{0x2202, 0x2203},
{0x2207, 0x2208},
{0x220b, 0x220b},
{0x220f, 0x220f},
{0x2211, 0x2211},
{0x2215, 0x2215},
{0x221a, 0x221a},
{0x221d, 0x2220},
{0x2223, 0x2223},
{0x2225, 0x2225},
{0x2227, 0x222c},
{0x222e, 0x222e},
{0x2234, 0x2237},
{0x223c, 0x223d},
{0x2248, 0x2248},
{0x224c, 0x224c},
{0x2252, 0x2252},
{0x2260, 0x2261},
{0x2264, 0x2267},
{0x226a, 0x226b},
{0x226e, 0x226f},
{0x2282, 0x2283},
{0x2286, 0x2287},
{0x2295, 0x2295},
{0x2299, 0x2299},
{0x22a5, 0x22a5},
{0x22bf, 0x22bf},
{0x2312, 0x2312},
{0x231a, 0x231b},
{0x2329, 0x232a},
{0x23e9, 0x23ec},
{0x23f0, 0x23f0},
{0x23f3, 0x23f3},
{0x2460, 0x24e9},
{0x24eb, 0x254b},
{0x2550, 0x2573},
{0x2580, 0x258f},
{0x2592, 0x2595},
{0x25a0, 0x25a1},
{0x25a3, 0x25a9},
{0x25b2, 0x25b3},
{0x25b6, 0x25b7},
{0x25bc, 0x25bd},
{0x25c0, 0x25c1},
{0x25c6, 0x25c8},
{0x25cb, 0x25cb},
{0x25ce, 0x25d1},
{0x25e2, 0x25e5},
{0x25ef, 0x25ef},
{0x25fd, 0x25fe},
{0x2600, 0x27e5},
{0x27ee, 0x27ff},
{0x2b1b, 0x2b1c},
{0x2b50, 0x2b50},
{0x2b55, 0x2b59},
{0x2e80, 0x2e99},
{0x2e9b, 0x2ef3},
{0x2f00, 0x2fd5},
{0x2ff0, 0x2ffb},
{0x3000, 0x303e},
{0x3041, 0x3096},
{0x3099, 0x30ff},
{0x3105, 0x312f},
{0x3131, 0x318e},
{0x3190, 0x31e3},
{0x31f0, 0x321e},
{0x3220, 0x4dbf},
{0x4e00, 0xa48c},
{0xa490, 0xa4c6},
{0xa960, 0xa97c},
{0xac00, 0xd7a3},
{0xf900, 0xfaff},
{0xfe10, 0xfe19},
{0xfe30, 0xfe52},
{0xfe54, 0xfe66},
{0xfe68, 0xfe6b},
{0xff01, 0xff60},
{0xffe0, 0xffe6},
{0xfffd, 0xfffd},
{0x16fe0, 0x16fe4},
{0x16ff0, 0x16ff1},
{0x17000, 0x187f7},
{0x18800, 0x18cd5},
{0x18d00, 0x18d08},
{0x1b000, 0x1b11e},
{0x1b150, 0x1b152},
{0x1b164, 0x1b167},
{0x1b170, 0x1b2fb},
{0x1f000, 0x1f02b},
{0x1f030, 0x1f093},
{0x1f0a0, 0x1f0ae},
{0x1f0b1, 0x1f0bf},
{0x1f0c1, 0x1f0cf},
{0x1f0d1, 0x1f0f5},
{0x1f100, 0x1f1ad},
{0x1f1e6, 0x1f202},
{0x1f210, 0x1f23b},
{0x1f240, 0x1f248},
{0x1f250, 0x1f251},
{0x1f260, 0x1f265},
{0x1f300, 0x1f6d7},
{0x1f6e0, 0x1f6ec},
{0x1f6f0, 0x1f6fc},
{0x1f700, 0x1f773},
{0x1f780, 0x1f7d8},
{0x1f7e0, 0x1f7eb},
{0x1f800, 0x1f80b},
{0x1f810, 0x1f847},
{0x1f850, 0x1f859},
{0x1f860, 0x1f887},
{0x1f890, 0x1f8ad},
{0x1f8b0, 0x1f8b1},
{0x1f900, 0x1f978},
{0x1f97a, 0x1f9cb},
{0x1f9cd, 0x1fa53},
{0x1fa60, 0x1fa6d},
{0x1fa70, 0x1fa74},
{0x1fa78, 0x1fa7a},
{0x1fa80, 0x1fa86},
{0x1fa90, 0x1faa8},
{0x1fab0, 0x1fab6},
{0x1fac0, 0x1fac2},
{0x1fad0, 0x1fad6},
{0x1fb00, 0x1fb92},
{0x1fb94, 0x1fbca},
{0x1fbf0, 0x1fbf9},
{0x20000, 0x2fffd},
{0x30000, 0x3fffd},
これを termux-app/terminal-emulator/src/main/java/com/termux/terminal/WcWidth.java の WIDE_EASTASIAN の定義と差し替えます。
そしてビルドして実行してみると……ちゃんと綺麗に揃った幅で表示されました！
Emacsの方は (set-language-environment "Japanese") すればちゃんと幅が2になっているみたいですね。昔のEmacsは自分で設定しないといけなくて、でもいつの間にか設定しなくても良くなってた記憶があります。
フォントの方は前に作ったキメラのようなフォントを適用したところ問題なく表示されました。決して綺麗なフォントではありませんが、まぁ、ある意味カッチリしているというべきか……。ついline-spacingを指定しようとしてしまいましたが効くわけがありません(笑)
何はともあれ予想されていたもう一つの方法でも解決できたということで。
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