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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
59 lines
3 KiB
C
59 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/str/str.h"
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/**
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* Returns nonzero if c is space character.
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*
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* We define this as invisible characters which move the cursor. That
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* means `\t\r\n\f\v` and unicodes whose category begins with `Z` but
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* not ogham since it's not invisible and non-breaking spaces neither
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* since they're not invisible to emacs users.
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*/
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int iswspace(wint_t c) {
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switch (c) {
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case '\t': // CHARACTER TABULATION
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case '\n': // LINE FEED
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case '\f': // FORM FEED
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case '\v': // LINE TABULATION
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case '\r': // CARRIAGE RETURN
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case ' ': // SPACE
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case 0x2000: // EN QUAD (Zs)
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case 0x2001: // EM QUAD (Zs)
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case 0x2002: // EN SPACE (Zs)
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case 0x2003: // EM SPACE (Zs)
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case 0x2004: // THREE-PER-EM SPACE (Zs)
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case 0x2005: // FOUR-PER-EM SPACE (Zs)
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case 0x2006: // SIX-PER-EM SPACE (Zs)
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case 0x2007: // FIGURE SPACE (Zs)
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case 0x2008: // PUNCTUATION SPACE (Zs)
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case 0x2009: // THIN SPACE (Zs)
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case 0x200a: // HAIR SPACE (Zs)
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case 0x2028: // LINE SEPARATOR (Zl)
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case 0x2029: // PARAGRAPH SEPARATOR (Zp)
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case 0x205f: // MEDIUM MATHEMATICAL SPACE (Zs)
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case 0x3000: // IDEOGRAPHIC SPACE (Zs)
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return 1;
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default:
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return 0;
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}
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}
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__weak_reference(iswspace, iswspace_l);
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