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1 /* Test whether a character is a blank. |
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2 |
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3 Copyright (C) 2009-2014 Free Software Foundation, Inc. |
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4 |
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5 This program is free software: you can redistribute it and/or modify |
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6 it under the terms of the GNU General Public License as published by |
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7 the Free Software Foundation; either version 3 of the License, or |
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8 (at your option) any later version. |
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9 |
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10 This program is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 GNU General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU General Public License |
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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17 |
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18 #include <config.h> |
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19 |
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20 /* Specification. */ |
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21 #include <ctype.h> |
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22 |
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23 int |
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24 isblank (int c) |
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25 { |
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26 /* On all known platforms, in all predefined locales, isblank(c) is likely |
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27 equivalent with (c == ' ' || c == '\t'). Look at the glibc definition |
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28 (in glibc/localedata/locales/i18n): The "blank" characters are '\t', ' ', |
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29 U+1680, U+180E, U+2000..U+2006, U+2008..U+200A, U+205F, U+3000, and none |
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30 except the first two is present in a common 8-bit encoding. Therefore |
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31 the substitute for other platforms is not more complicated than this. */ |
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32 return (c == ' ' || c == '\t'); |
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33 } |
