SFK: help nocase (Help)

Команда: help nocase
case insensitive search and file selection:

   since version 1.9.0 SFK for Windows supports
   case insensitive search within the codepage of
   your Windows system. for example,

   - computers with german or french locale with codepage
     1252 may search german and french text, ignoring case
     for accent and umlaut characters.

   - computers with russian locale with codepage 1251
     may search cyrillic text, case insensitive.

   but you may not search french text on a russian
   locale case insensitive, as codepage 1251 does
   not contain the required accent characters.

   this means to use case insensitive search you are
   limited to search your own language, plus english.

   to see what codepage your system uses, type:

      sfk sysinfo

   to force codepage 1252 (ISO 8859-1) internally in SFK,
   no matter what the actual system codepage is,
   use global option -isochars directly after sfk,
   or set the environment like:

      SET SFK_CONFIG=isochars

   this is recommended when creating script packackes
   for distribution that must behave the same on any
   computer, regardless of the local codepage.

   to see in detail how characters are mapped during
   case insensitive search, use global option -tracecase:

      sfk -tracecase filter in.txt -+myword

   use -tracecase2 to also show chars which are not mapped
   because they are lowercase already, or not a letter.

   for the full list of SFK character mappings see:

      sfk listcodes

   case search options:
      -case       search case sensitive, a != A
      -nocase     search case insensitive (default),
                  a == A and a_accent == A_accent
                  depending on your codepage
      -nocasemin  search case insensitive but only
                  latin characters a-z (ASCII low codes)
      -deacc      use accent insensitive text search
                  and filename selection, i.e.
                  a == A == a_accent == A_accent.
                  cannot be combined with -case.
                  can also be set by environment like:
                  SET SFK_CONFIG=deacc

   see also
      sfk help chars   about codepages

   SFK for Linux can only search latin base characters
   from A to Z case insensitive, without any accents.