Escape Sequence for Capital Letters Input at Shell Not Working Post: 302820367

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Operating Systems Solaris Escape Sequence for Capital Letters Input at Shell Not Working Post 302820367 by rstor on Wednesday 12th of June 2013 02:32:04 PM

06-12-2013

Registered User

Escape Sequence for Capital Letters Input at Shell Not Working

Hello,

I am running Solaris 8. When issuing the command "stty lcase" all text which is output to the terminal are capitalized. Letters that are supposed to be capitals are preceded by a backslash during output. All text which is input is converted to lower case. This is the expected behaviour to my understanding of "stty lcase".

According the documentation for termio(7I) it mentions that "If XCASE is set and ICANON is set, an upper case letter is accepted on input if preceded by a backslash (`\')"

Problem:

I have confirmed that both xcase and icanon are set. However; at the shell, when trying to enter a capital letter (such as the capital letter "A") using the escape sequence: \A, the shell interprets it as a lower case letter "a". What do I need to do in order to be able to enter capital letters at the shell when "stty lcase" is set? The terminal that I will eventually be using is an ASR-33 Teletype that can only handle capital letters (input and output).

Interestingly, using the vi editor, the escape sequence works. If I enter a backslash it does not echo back immediately. When I follow the backslash by a second character such as the letter A, both the backslash and the letter A are echoed back, and is stored in the saved file as a capital letter "A". Is it possible to have the shell behave in the same manner?

rstor

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LEARN ABOUT LINUX

tolower

TOUPPER(3)						     Linux Programmer's Manual							TOUPPER(3)

NAME

       toupper, tolower - convert letter to upper or lower case

SYNOPSIS

       #include <ctype.h>

       int toupper(int c);
       int tolower(int c);

DESCRIPTION

       toupper() converts the letter c to upper case, if possible.

       tolower() converts the letter c to lower case, if possible.

       If c is not an unsigned char value, or EOF, the behavior of these functions is undefined.

RETURN VALUE

       The value returned is that of the converted letter, or c if the conversion was not possible.

CONFORMING TO

       C89, C99, 4.3BSD.

BUGS

       The  details  of  what constitutes an uppercase or lowercase letter depend on the current locale.  For example, the default "C" locale does
       not know about umlauts, so no conversion is done for them.

       In some non-English locales, there are lowercase letters with no corresponding uppercase equivalent; the German sharp s is one example.

SEE ALSO

       isalpha(3), setlocale(3), towlower(3), towupper(3), locale(7)

COLOPHON

       This page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    1993-04-04								TOUPPER(3)

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