This is only for plumbing in non-interactive mode in forkexec(), but not piping
content.
Probably obvious what the descriptors are, but also add a few comments to dup2
of the file descriptors (stdin, stdout, stderr).
To reproduce a behaviour:
Plumb script:
#!/bin/sh
dmenu
Then launch it:
SFEED_PLUMB_INTERACTIVE=0 SFEED_PLUMB=thescript sfeed_curses ~/.sfeed/feeds/*
The program now waits on input while in non-interactive mode and only seems to
hang.
After:
The program starts but just has no input passed to it.
- SIGINT: reword, canceling the line editor is the exception.
- Document the order of signal handling.
- Document interactive and non-interactive behaviour in a separate section and
in more detail.
Remove repetition for each *_INTERACTIVE environment variable.
- Document SIGINT and SIGTERM exit status.
- Typo: "statusbar" -> "status bar".
- Reword a few sentences.
With additional changes and feedback from adc, thanks!
Hiltjo Posthuma
Anders Damsgaard