Please describe the problem:
It seems that the "changed" signal is being emitted twice when there is text in
the entry and then the text is changed via gtk_entry_set_text. Here's a small
snip-it:

#include <gtk/gtk.h>

static changed( GtkEditable *editable, gpointer data )
{
	printf( "changed to text '%s'\n", gtk_entry_get_text(GTK_ENTRY(editable)) );
}

int main( int argc, char **argv )
{
	GtkWidget *entry;

    gtk_init( &argc, &argv );

	entry = gtk_entry_new();

	g_signal_connect( G_OBJECT(entry), "changed", G_CALLBACK(changed), NULL );
	gtk_entry_set_text( GTK_ENTRY(entry), "hello" );
	gtk_entry_set_text( GTK_ENTRY(entry), "world" );

    return 0;
}

This code produces the following output:

changed to text 'hello'
changed to text ''
changed to text 'world'

The text has only acutally changed twice, not three times. This seems to me to
be an undesirable side-effect of the implementation of set_text().

Steps to reproduce:
run the supplied program

Actual results:
Three lines of output

Expected results:
Two lines of output:

changed to text 'hello'
changed to text 'world'


Does this happen every time?
yes

Other information: