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edit-and-execute-command interrupted by SIGTSTP

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0

I've been using bash's edit-and-execute-command function:

edit-and-execute-command (C-x C-e)

Invoke an editor on the current command line, and execute the result as shell commands. Bash attempts to invoke $VISUAL, $EDITOR, and emacs as the editor, in that order.

https://www.gnu.org/software/bash/manual/html_node/Miscellaneous-Commands.html

I've noticed that if I invoke an editor,
use Ctrl-Z to put it into the background,
and then use fg to put it back into the foreground,
the shell no longer executes the temporary file.

This is handy if I want to abort the command,
but I found the behavior a little surprising the first time it happened.

My questions:

• 
  

  Why does this happen?

  
  
  

  I know from the source code
  that edit_and_execute_command eventually calls fc,
  but it's not immediately clear to me
  why sending SIGTSTP prevents bash from executing the temporary file.

  
  



• If I had accidentally hit Ctrl-Z
  and still wanted to execute the script in the temporary file still open by the editor,
  what would be the best way of doing that?

bash signals line-editor fc

share|improve this question

edited 4 mins ago

Nathaniel M. Beaver

asked 1 hour ago

Nathaniel M. BeaverNathaniel M. Beaver

27222 silver badges2020 bronze badges

add a comment | 

0

I've been using bash's edit-and-execute-command function:

edit-and-execute-command (C-x C-e)

Invoke an editor on the current command line, and execute the result as shell commands. Bash attempts to invoke $VISUAL, $EDITOR, and emacs as the editor, in that order.

https://www.gnu.org/software/bash/manual/html_node/Miscellaneous-Commands.html

I've noticed that if I invoke an editor,
use Ctrl-Z to put it into the background,
and then use fg to put it back into the foreground,
the shell no longer executes the temporary file.

This is handy if I want to abort the command,
but I found the behavior a little surprising the first time it happened.

My questions:

• 
  

  Why does this happen?

  
  
  

  I know from the source code
  that edit_and_execute_command eventually calls fc,
  but it's not immediately clear to me
  why sending SIGTSTP prevents bash from executing the temporary file.

  
  



• If I had accidentally hit Ctrl-Z
  and still wanted to execute the script in the temporary file still open by the editor,
  what would be the best way of doing that?

bash signals line-editor fc

share|improve this question

edited 4 mins ago

Nathaniel M. Beaver

asked 1 hour ago

Nathaniel M. BeaverNathaniel M. Beaver

27222 silver badges2020 bronze badges

add a comment | 

I've been using bash's edit-and-execute-command function:

edit-and-execute-command (C-x C-e)

Invoke an editor on the current command line, and execute the result as shell commands. Bash attempts to invoke $VISUAL, $EDITOR, and emacs as the editor, in that order.

https://www.gnu.org/software/bash/manual/html_node/Miscellaneous-Commands.html

I've noticed that if I invoke an editor,
use Ctrl-Z to put it into the background,
and then use fg to put it back into the foreground,
the shell no longer executes the temporary file.

This is handy if I want to abort the command,
but I found the behavior a little surprising the first time it happened.

My questions:

• 
  

  Why does this happen?

  
  
  

  I know from the source code
  that edit_and_execute_command eventually calls fc,
  but it's not immediately clear to me
  why sending SIGTSTP prevents bash from executing the temporary file.

  
  



• If I had accidentally hit Ctrl-Z
  and still wanted to execute the script in the temporary file still open by the editor,
  what would be the best way of doing that?

bash signals line-editor fc

share|improve this question

edited 4 mins ago

Nathaniel M. Beaver

asked 1 hour ago

Nathaniel M. BeaverNathaniel M. Beaver

27222 silver badges2020 bronze badges

share|improve this question

edited 4 mins ago

Nathaniel M. Beaver

asked 1 hour ago

Nathaniel M. BeaverNathaniel M. Beaver

27222 silver badges2020 bronze badges

share|improve this question

edited 4 mins ago

Nathaniel M. Beaver

asked 1 hour ago

Nathaniel M. BeaverNathaniel M. Beaver

27222 silver badges2020 bronze badges

asked 1 hour ago

Nathaniel M. BeaverNathaniel M. Beaver

27222 silver badges2020 bronze badges

asked 1 hour ago

Nathaniel M. BeaverNathaniel M. Beaver

27222 silver badges2020 bronze badges