edge.tush

Some edge cases. First, empty input does nothing:

$ tush-run </dev/null

Input with no commands and no output is just echoed:

$ echo  >text OK here we go
$ echo >>text Move on. Nothing to see here.

$ tush-run text
| OK here we go
| Move on. Nothing to see here.

But output is dropped:

$ echo >>text '| wheee'

$ tush-run text
| OK here we go
| Move on. Nothing to see here.

And lines that look like they might have been meant as commands
provoke a warning:

$ echo >>text ' | heee'
$ echo >>text '   ? 42'
$ echo >>text '  @ ouch'

$ tush-run text
| OK here we go
| Move on. Nothing to see here.
|  | heee
|    ? 42
|   @ ouch
@ Warning: comment line that looks like a command
@ Warning: comment line that looks like a command
@ Warning: comment line that looks like a command

(Really it ought to tell you *which* line it's warning about. Sorry.)