Treating `[` as a literal when replacing in a string within SAS proc SQL using the translate function

I am using SAS version 9.4_M5. I have a data file in SAS with a column of values with format of 08.42.18 hrs __[0001122].gif.
I am wanting to replace the [ with [[]. So the value of 08.42.18 hrs __[0001122].gif would be changed to 08.42.18 hrs __[[]0001122].gif.

Below is an SQL test (note: I’m simply using sashelp.class as an example table since I am hard-coding the values into the SQL for this example so anyone with SAS can run it).

%_eg_conditional_dropds(testcase);
PROC SQL;
   CREATE TABLE testcase AS 
   SELECT 
   (translate('08.42.18 hrs __[0001122].gif','ffd','gif')) as t1,
   (translate('08.42.18 hrs __[0001122].gif','[[]','[')) as t2,
   (translate('08.42.18 hrs __[0001122].gif',']]',']')) as t3,
   (translate('08.42.18 hrs __[0001122].gif','blah','[[]')) as t4,
   (translate('08.42.18 hrs __[0001122].gif','him','\\[')) as t5,
   (translate('08.42.18 hrs __[0001122].gif','him','\[')) as t6
   FROM sashelp.class
 QUIT;

/* value of t1 changed to `08.42.18 hrs __[0001122].ffd` */
/* value of t2 stays the same `08.42.18 hrs __[0001122].gif` */
/* value of t3 stays the same `08.42.18 hrs __[0001122].gif` */
/* value of t4 gets weird and changes to `08.42.18 hrs __l0001122a.gif` */
/* value of t5 changes `[` to `m` */
/* value of t6 changes `[` to `i` */

It seems the translate function is treating the brackets as regex somehow but I was not able to find anything in the docs about it and the behavior is odd. I have not figured out how to force the translate function to treat the [ as a literal. Any ideas? – thank you

>Solution :

Use tranwrd instead.

data test;
    string = tranwrd('08.42.18 hrs __[0001122].gif', '[', '[[]');
run;

08.42.18 hrs __[[]0001122].gif