Job control about mrsh

[ddevault]

-m: This option shall be supported if the implementation supports the User Portability Utilities option. All jobs shall be run in their own process groups. Immediately before the shell issues a prompt after completion of the background job, a message reporting the exit status of the background job shall be written to standard error. If a foreground job stops, the shell shall write a message to standard error to that effect, formatted as described by the jobs utility. In addition, if a job changes status other than exiting (for example, if it stops for input or output or is stopped by a SIGSTOP signal), the shell shall write a similar message immediately prior to writing the next prompt. This option is enabled by default for interactive shells.

Related:

http://pubs.opengroup.org/onlinepubs/9699919799/utilities/bg.html

http://pubs.opengroup.org/onlinepubs/9699919799/utilities/fg.html

http://pubs.opengroup.org/onlinepubs/9699919799/utilities/kill.html

http://pubs.opengroup.org/onlinepubs/9699919799/utilities/wait.html

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_204

[emersion]

Some docs: https://www.gnu.org/software/libc/manual/html_node/Job-Control.html#Job-Control

[emersion]

First step would be to make the glibc manual code work: https://git.sr.ht/~emersion/minishell

[emersion]

Job control has been mostly sorted out now. Two builtins have been implemented: fg and bg. Other builtins will be easy to implement.

[emersion]

• Check disabling job control does the right thing
• Store the AST that started each job (required for pretty-printing it)
• Add support for fg and bg optional argument
• Add kill, wait
• Print terminated/stopped jobs info before printing PS1

[emersion]

To store the AST, I think I'll make mrsh_job able to contain zero jobs so that we can create the job when executing the pipeline or async list.

[emersion]

Jobs now store the AST node they have been created for.

[ddevault]

Nice ^^

[emersion]

Job control has been almost completely sorted out by now, the complicated part is implemented. I've opened separate issues for the remaining bits.