请教，在Apple，Linux上是如何输入unicode码的呢

2025-03-26 14:23:01

推荐回答（2个）

回答1：

推荐的这哥们估计英语太好了，完全没翻译。。
“In Mac OS X and in Mac OS 8.5 and later: one chooses the Unicode Hex Input keyboard layout. ...”
这句很关键啊，打开键盘偏好设置，选择输入源卡片，然后点加号，搜索Unicode，选择添加，切换到Unicode，按住option，输入Unicode四位编码即可。
这不是在翻译啊。。

回答2：

Hex input
Clause 5.1 of ISO 14755 describes a Basic method whereby a beginning sequence is followed by the hexadecimal representation of the codepoint and the ending sequence. On some systems, this is limited to the BMP (characters up to U+FFFF).

An example of an ISO 14755-conformant system is GTK+, where the beginning sequence is CTRL+SHIFT+U and the ending sequence is null. In some older versions Ctrl and Shift must be held down while entering the number In GTK+ versions before 2.10, Ctrl-Shift-U is not used, only Ctrl-Shift-[hex number]

* The RichEdit control on Microsoft Windows (as used in for example WordPad) supports the following input method: one first enters the character’s hexadecimal code, then immediately presses Alt + x. For example, entering f1 and then pressing the combination will produce the character ñ. The code must not be preceded by any digit or letters a-f as they will be treated as part of the code to be converted. This also works on Microsoft Word 2002/2003 for Windows.

* In the Vim editor, the user first types Ctrl-V u, then types in the hexadecimal number of the symbol or character desired, and it will be converted into the symbol. (On Microsoft Windows, Ctrl-Q may be required instead of Ctrl-V. [1]) In Emacs, the equivalent command is M-x ucs-insert.

* In Mac OS X and in Mac OS 8.5 and later: one chooses the Unicode Hex Input keyboard layout. Holding down the Option key, one then types the four-digit hex Unicode code point. On eleasing the Option key; the equivalent character will appear.[2]

* On Microsoft Windows, if the registry key HKEY_Current_User\Control Panel\Input Method\EnableHexNumpad has a value of "1", holding down alt and pressing the "plus" on the numeric keypad, followed by the hex code, will work.[3]

* In Linux first press Ctrl+Shift+U, then type the desired hexadecimal code. I.e. type "0041" to get the letter "A".

What are useful Perl one-liners for working with UTF-8?
These examples assume that you have Perl 5.8.1 or newer and that you work in a UTF-8 locale (i.e., “locale charmap” outputs “UTF-8”).

For Perl 5.8.0, option -C is not needed and the examples without -C will not work in a UTF-8 locale. You really should no longer use Perl 5.8.0, as its Unicode support had lots of bugs.

Print the euro sign (U+20AC) to stdout:

perl -C -e 'print pack("U",0x20ac)."\n"'
perl -C -e 'print "\x{20ac}\n"' # works only from U+0100 upwards

Locate malformed UTF-8 sequences:

perl -ne '/^(([\x00-\x7f]|[\xc0-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xf7][\x80-\xbf]{3})*)(.*)$/;print "$ARGV:$.:".($-[3]+1).":$_" if length($3)'

Locate non-ASCII bytes:

perl -ne '/^([\x00-\x7f]*)(.*)$/;print "$ARGV:$.:".($-[2]+1).":$_" if length($2)'

Convert non-ASCII characters into SGML/HTML/XML-style decimal numeric character references (e.g. Ş becomes Ş:

perl -C -pe 's/([^\x00-\x7f])/sprintf("&#%d;", ord($1))/ge;'

Convert (hexa)decimal numeric character references to UTF-8:

perl -C -pe 's/&\#(\d+);/chr($1)/ge;s/&\#x([a-fA-F\d]+);/chr(hex($1))/ge;'

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