'set bail on' command is ignored when script is run "inside" ISQL using 'IN 
<test.sql>'  (rather than from command line switch, i.e. isql  -i <test.sql>)
---------------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: CORE-4598
                 URL: http://tracker.firebirdsql.org/browse/CORE-4598
             Project: Firebird Core
          Issue Type: Bug
          Components: ISQL
            Reporter: Pavel Zotov


Consider following script (name = 'test_bail.sql'):

--- begin of script ---
show version;
set bail on;
set autoddl off;
commit;

set term ^;
execute block as
begin
  begin
    execute statement 'recreate exception ex_exclusive_required ''At least one 
concurrent connection detected.''';
    when any do begin end
  end
end
^
set term ;^
commit;

set term ^;
execute block as
begin
    if ( exists( select * from mon$attachments a 
                 where a.mon$attachment_id<>current_connection 
                 and a.mon$remote_protocol is not null
                ) 
       ) 
    then
        exception ex_exclusive_required;

end
^
set term ;^
commit;

select current_timestamp as dts,'set bail on is ignored!' as msg from 
rdb$database;
--- end of script ---

Session #1: connect to database


Session #2: run this script in two cases.

Case-1:
======
Using command-line switch '-i':

isql 192.168.0.220/3253:/var/db/fb25/oltp25b.fdb -i test_bail.sql

Output:
======
Statement failed, SQLSTATE = HY000
exception 3
-EX_EXCLUSIVE_REQUIRED
-At least one concurrent connection detected.
After line 18 in file test_bail.sql

Case-2:
=======
Using 'IN <script>' command:

C:\MIX\firebird\OLTPTEST\trunk>isql 192.168.0.220/3253:/var/db/fb25/oltp25b.fdb
SQL> in test_bail.sql;

Output:
======

<. . .>
Statement failed, SQLSTATE = HY000
exception 5
-EX_EXCLUSIVE_REQUIRED
-At least one concurrent connection detected.
After line 18 in file test_bail.sql

                      DTS MSG
========================= =======================
2014-11-06 22:34:47.6290  set bail on is ignored!


Why 'set bail on' was ignored in case-2 ?

PS. Results are the same for 2.5 and 3.0
PPS. Adding '-b' switch to command that run ISQL (C:\...>isql 
192.168.0.220/3253:/var/db/fb25/oltp25b.fdb -b) - does NOT help.


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