Skip verbose output of autocd

[Jai-JAP]

Currently setting the autocd option gives verbose output of the format cd -- <dir>

Is it possible to provide a toggle optionally to disable this verbose output?

There is a hacky fix around this which is as follows

• exec {BASH_XTRACEFD}>/dev/null to disable verbosity
• exec {BASH_XTRACEFD}>/dev/stdout to re-enable
  But this workaround works globally and may lead to breakage of other programs.
  Maybe this can be done only for the autocd feature and thus not break other features.

@akinomyoga What is your opinion on this? Would you add this to ble.sh?

[akinomyoga]

The autocd feature is not a part of ble.sh's feature, and ble.sh doesn't touch anything related to autocd. The autocd feature is handled by the command interpreter by Bash, so there is no way for a script to interfere with the behavior.

[Jai-JAP]

Maybe I could instead add a magic expansion that converts the directory name '' in the command context to cd <dirname>, so that the user only inputs the directory name, yet the executed command line would be cd <dirname>.

This would be a viable solution for this specific problem. The only need is that history should still reflect the command as <dirname> while executing cd <dirname>

Or, another possibility would be to implement suffix aliases of zsh (alias -s, which defines the expansion of the filename with a particular filename extension in the command-name context), and to allow users to define a rule for the directory name as a special case.

Well I don't know about that...

[akinomyoga]

The only need is that history should still reflect the command as <dirname> while executing cd <dirname>

Why is it needed? I think if the command before the line editor's expansion is directly put in the history, it would cause more problems. The expansion of <dirname> into cd <dirname> is not Bash's feature but the feature of ble.sh as an editor.

Then, first, it is strange to put the intermediate state of the line editor in the history, which is not the command actually executed by Bash. If one later tries to use the history entry without ble.sh, it will not work as expected even though it is put in the command history of Bash.

Next, the magic expansion only happens with a certain condition, which is not preserved in the command history. If the directory name that was expanded by the magic expansion is directly put in the history, and the user picks the command from the history and executes it, it can be directly executed without the expansion and cause the message cd -- <dirname>, which you want to avoid.

[Jai-JAP]

Oh! Now I get it completely. That's right it may cause an issue for many users. It's better to just add cd <dir> to the history.

Can you add this feature to ble.sh?

[akinomyoga]

In the latest commit b6344b3, I added support for autocd in bleopt edit_magic_expand and bleopt edit_magic_accept. Please check the descriptions there for details. For example, you can set the following:

# blerc

bleopt edit_magic_expand=history:sabbrev:autocd
bleopt edit_magic_accept=verify-syntax:autocd

[Jai-JAP]

That's nice. I am able to get it working the way I wanted. Thanks for your work.