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Top Forums UNIX for Advanced & Expert Users Support for Unicode in GTK2 and GTK3 file selection box? Post 303042025 by DevuanFan on Wednesday 11th of December 2019 01:23:17 PM
Old 12-11-2019
Support for Unicode in GTK2 and GTK3 file selection box?

I'm on Tiny Core Linux Pure64 10.1. My locale is en_US.UTF-8 and I generally have no trouble with Unicode characters with one exception: When I try to use Unicode characters in GTK applications' file selection box, I get "Invalid file name":

Image

The error affects both GTK2 and GTK3 applications.

Here is some info from terminal to show my locale and the fact that, at a low level, C library can handle Unicode characters in filenames:

Code:
bruno@box:~$ locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

bruno@box:~$ cat test.c
#include <stdio.h>

int main(void)
{
	FILE *fp;

	fp = fopen("/home/bruno/eĥoŝanĝoĉiuĵaŭde.txt", "w+");
	fprintf(fp, "hello world");
	fclose(fp);
	return 1;
}
bruno@box:~$ gcc test.c
bruno@box:~$ ./a.out 
bruno@box:~$ cat eĥoŝanĝoĉiuĵaŭde.txt 
hello world

I've already asked for help at the Tiny Core Linux forum, but no luck so far.

GTK2 and GTK3 applications can display Unicode characters just fine. I can also type the characters into the applications. As far as I can tell, the issue seems limited to the file selection box.

Does anyone know the backend for GTK2 and GTK3's file selection box? If I can pinpoint the backend, perhaps I could try to recompile it with attention to configuration options related to Unicode support.
 

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MB_STRTOUPPER(3)							 1							  MB_STRTOUPPER(3)

mb_strtoupper - Make a string uppercase

SYNOPSIS
string mb_strtoupper (string $str, [string $encoding = mb_internal_encoding()]) DESCRIPTION
Returns $str with all alphabetic characters converted to uppercase. PARAMETERS
o $str - The string being uppercased. o $encoding -The $encoding parameter is the character encoding. If it is omitted, the internal character encoding value will be used. RETURN VALUES
$str with all alphabetic characters converted to uppercase. UNICODE
For more information about the Unicode properties, please see http://www.unicode.org/unicode/reports/tr21/. By contrast to strtoupper(3), 'alphabetic' is determined by the Unicode character properties. Thus the behaviour of this function is not affected by locale settings and it can convert any characters that have 'alphabetic' property, such as a-umlaut (a). EXAMPLES
Example #1 mb_strtoupper(3) example <?php $str = "Mary Had A Little Lamb and She LOVED It So"; $str = mb_strtoupper($str); echo $str; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO ?> Example #2 mb_strtoupper(3) example with non-Latin UTF-8 text <?php $str = "Txiotn a nE Baos unuvn yn, dpaokeCei unp vw0po kuvs"; $str = mb_strtoupper($st_, 'UTF-8'); _ _ _ _ echo $str; // Prints TXI>TH A/TTHH BAO> YHMNH | H, /PA>KE/EI YTTP NOOPO KYN> ?> SEE ALSO
mb_strtolower(3), mb_convert_case(3), strtoupper(3). PHP Documentation Group MB_STRTOUPPER(3)
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