DOKK / manpages / debian 13 / tcllib / wcswidth.3tcl.en
textutil::wcswidth(3tcl) Text and string utilities, macro processing textutil::wcswidth(3tcl) 







textutil::wcswidth - Procedures to compute terminal width of
    strings








package require Tcl 8.5 9


package require textutil::wcswidth ?35.3?


::textutil::wcswidth string


::textutil::wcswidth_char char


::textutil::wcswidth_type char












The package textutil::wcswidth provides commands that
    determine character type and width when used in terminals, and the length of
    strings when printed in a terminal.


The data underlying the functionality of this package is provided
    by the Unicode database file
    http://www.unicode.org/Public/UCD/latest/ucd/EastAsianWidth.txt.


The complete set of procedures is described below.



  
::textutil::wcswidth string

  
Returns the number of character cells taken by the string when printed to
      the terminal. This takes double-wide characters from the various Asian and
      other scripts into account.

  
::textutil::wcswidth_char char

  
Returns the number of character cells taken by the character when printed
      to the terminal.
    
Beware: The character char is specified as
        Unicode codepoint.

  

  
::textutil::wcswidth_type char

  
Returns the character type of the specified character. This a single
      character in the set of A, F, H, N, Na,
      and W, as specified per
      http://www.unicode.org/Public/UCD/latest/ucd/EastAsianWidth.txt
    
Beware: The character char is specified as
        Unicode codepoint.

  










This document, and the package it describes, will undoubtedly
    contain bugs and other problems. Please report such in the category
    textutil of the Tcllib Trackers
    [http://core.tcl.tk/tcllib/reportlist]. Please also report any ideas for
    enhancements you may have for either package and/or documentation.


When proposing code changes, please provide unified diffs,
    i.e the output of diff -u.


Note further that attachments are strongly preferred over
    inlined patches. Attachments can be made by going to the Edit form of
    the ticket immediately after its creation, and then using the left-most
    button in the secondary navigation bar.








regexp(3tcl), split(3tcl), string(3tcl)








character type, character width, double-wide character, prefix,
    regular expression, string








Text processing







  

    35.3
    tcllib