Bugs in gsm-encoding.c

[Irfan Acar]

Hello,

In gnokii-0.6.23/common/gsm-encoding.c, char_def_alphabet_ext_decode() 
should return gsm_default_alphabet[value] instead of '?' in the default 
branch of the switch statement.

See the note following the GSM 7bit default alphabet extension table in 
GSM 03.38 version 7.2.0:

"In the event that an MS receives a code where a symbol is not 
represented in the above table then the MS shall display the character 
shown in the main default 7 bit alphabet table in section 6.2.1"

Also, the following case should be added to the switch statement:

        case 0x1B: return ' ';  break;

See Note 1 following the GSM 7bit default alphabet extension table in 
GSM 03.38 version 7.2.0:

"This code value is reserved for the extension to another extension 
table.  On receipt of this code, a receiving entity shall display a 
space until another extension table is defined."

-irfan