Member list built-in line command exit

In the ISPF configuration table keyword file, this exit is set with keywords MEMBER_LIST_LINE_COMMAND_PROGRAM_EXIT and MEMBER_LIST_LINE_COMMAND_COMMAND_EXIT.

The member list line command exit enables installations to change or restrict the behavior of the built-in line commands entered in a PDF member list. This exit is invoked for single-character member list built-in line commands invoked from ISPF option 3.1, ISPF option 3.4, and the ISPF Workplace (option 11).

This exit can be used to modify the behavior of built-in line commands. For example, when the E (edit) command is entered next to a member, the exit might examine the contents of the member and invoke a program other than the ISPF editor to process that member. If the exit then determines that the ISPF editor does not need to be invoked, it must return a return code of 8.

Exit parameters

PDF uses these parameters to communicate with the line command exit routine. These parameters are passed as a single 65-character string. A single blank is placed between parameters.

Table 1. Details of the parameters used to communicate with the line command exit routine
Parameter	Type	Len	Description	Modifiable
LINE COMMAND	CHAR	1	A 1-character field containing the data set list line command.	No
DATA SET NAME AND MEMBER	CHAR	56	A 56-character field containing data set name and member against which the line command is run. The format of this field is: 'DATA.SET.NAME(MEMBER)'. The field is left-justified with trailing blanks.	No
VOLUME SERIAL	CHAR	6	A 6-character field containing the volume on which the data set specified in DATA SET NAME AND MEMBER can be found.	No

Usage notes

The name of the module is placed into the ISPF configuration table when the product is installed.
31-bit addressing must be supported by the exit routine as it is given control in AMODE 31. PDF does not restrict the RMODE of the exit, but RMODE ANY is recommended.
For the program version of the exit, standard OS linkage conventions are used to branch to the exit routine that is defined.
For the command version of the exit, the parameters are passed as operands.
You can make PDF service calls from within the exit routine.
You cannot activate or deactivate the exit while a PDF session is in progress. You can make changes to the exit routine load module at any time, but because PDF loads the module only once at session initialization, the changes are not recognized until the next ISPF session.
If the exit name has been specified in the ISPF configuration table and the member list was generated from ISPF option 3.1, 3.4, or 11, the exit is called before each built-in line command is processed. The exit can analyze the line command and determine whether you should invoke the command as entered, or not at all.

Error processing

If a nonzero return code is returned from an exit call, a message is conditionally set.

Return codes

0: Use line command as specified by the user
8: Do not invoke this built-in command
20: Severe error occurred.