automaticly changing hex00 into hex20 - why?

  • Hi,
    since many years there’s a feature: in file are some hex20.
    if I’m copying or removing line, blocks or anything else, the editor ist changing them all to hex20 (a normal blank). but I do need my special blanks in form of hex00. I do need them really! ;-)

    is it above a automatic feature? can we do one setting, were we can put it off?
    every time I have this problem, I must use CRiSP. CRiSP doesn’t kill me my hex00-signs ;-)

    Thanks a lot, Yours Klaus

  • @Klaus-Lehmann

    you have to use the special copy/paste in np++ for binary, non ascii or mixed contents:

    menu bar > edit > paste special > copy binary content
    menu bar > edit > paste special > paste binary content

    if you need it often, you can set a custom keyboard shortcut on copy and paste binary content

  • Hi, @klauss-lehmann and All,

    Additional information to the excellent method of @meta-chuh :

    • Firstly, contrary to any other character, you cannot insert NUL characters, either, with any of these 3 ways :

      • Alt + nnn , where n are digits, pressed on the numeric keypad ( OEM encoding )

      • Alt +0nnn , where 0 and n are digits, pressed on the numeric keypad ( ANSI encoding )

      • Alt + the + ( on Numeric keypad ) + hhhh, where h are hexadecimal chars ( UNICODE encoding ) :

        • The letters, from a to f, typed on the main keyboard

        • The digits, from 0 to 9, typed on the numeric keypad

    So, the only way is to use the Character Panel ( Edit > Character Panel ) and, then, to double-click on the first line 0 00 NULL in order to insert a single NUL character, at cursor location

    Secondly, the present regex engine of N++, can handle the NUL characters in search, without any trouble, using the regexes :

    \0 or \x00 or \x{00} or \x{0000} or \N{NUL} or \c@ or \c

    Unfortunately, in replacement, there’s, indeed, no mean to insert a NUL character :-(( A work-around is possible, using a local installation of N++ v6.9.0 and a modified version of the Scintilla library ( SciLexer.dll ). Refer to LAST part of this FAQ post :

    Best Regards,


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