ZLE_LINE_ABORTED: how to restore the last non-blank aborted line?

ZLE_LINE_ABORTED: how to restore the last non-blank aborted line?

[Hong Xu]

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Hi all,

While ZLE_LINE_ABORTED is useful for preserving the last aborted line,
but I think the real interest is the last aborted non-blank line --
ZLE_LINE_ABORTED would turn empty if ^C is pressed on an empty line
disregarding what it was. This is annoying since sometimes auto
completion stuck and more than one ^C is used to cancel that.

Is there any way to preserve it in this case in zsh? Thanks!

Hong



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Re: ZLE_LINE_ABORTED: how to restore the last non-blank aborted line?

[Bart Schaefer]

On Sep 27,  9:11pm, Hong Xu wrote:
}
} ZLE_LINE_ABORTED would turn empty if ^C is pressed on an empty line
} disregarding what it was. This is annoying since sometimes auto
} completion stuck and more than one ^C is used to cancel that.
} 
} Is there any way to preserve it in this case in zsh?

Can you give a more specific example?  Normally any buffer preceding
the line on which the abort occurred is already in the history and can
be recalled with up-line-or-history et al.; ZLE_LINE_ABORTED is only
needed to capture lines that haven't yet been added to history.

Re: ZLE_LINE_ABORTED: how to restore the last non-blank aborted line?

[Hong Xu]

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On 09/29/2016 12:12 AM, Bart Schaefer wrote:
> On Sep 27,  9:11pm, Hong Xu wrote:
> }
> } ZLE_LINE_ABORTED would turn empty if ^C is pressed on an empty line
> } disregarding what it was. This is annoying since sometimes auto
> } completion stuck and more than one ^C is used to cancel that.
> } 
> } Is there any way to preserve it in this case in zsh?
> 
> Can you give a more specific example?  Normally any buffer preceding
> the line on which the abort occurred is already in the history and can
> be recalled with up-line-or-history et al.; ZLE_LINE_ABORTED is only
> needed to capture lines that haven't yet been added to history.
> 

Sure. For example,

    emacs path/to/some/file

Now assume that the tab completion stucks at this point and the user
accidentally presses two ^C to cancel that. Now, ZLE_LINE_ABORTED is
empty but the user would prefer to restore the line "emacs
path/to/some/file".

Hong


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Re: ZLE_LINE_ABORTED: how to restore the last non-blank aborted line?

[Mikael Magnusson]

On Thu, Sep 29, 2016 at 9:32 AM, Hong Xu <hong@topbug.net> wrote:
> On 09/29/2016 12:12 AM, Bart Schaefer wrote:
>> On Sep 27,  9:11pm, Hong Xu wrote:
>> }
>> } ZLE_LINE_ABORTED would turn empty if ^C is pressed on an empty line
>> } disregarding what it was. This is annoying since sometimes auto
>> } completion stuck and more than one ^C is used to cancel that.
>> }
>> } Is there any way to preserve it in this case in zsh?
>>
>> Can you give a more specific example?  Normally any buffer preceding
>> the line on which the abort occurred is already in the history and can
>> be recalled with up-line-or-history et al.; ZLE_LINE_ABORTED is only
>> needed to capture lines that haven't yet been added to history.
>>
>
> Sure. For example,
>
>     emacs path/to/some/file
>
> Now assume that the tab completion stucks at this point and the user
> accidentally presses two ^C to cancel that. Now, ZLE_LINE_ABORTED is
> empty but the user would prefer to restore the line "emacs
> path/to/some/file".

You can have your zle-line-init hook record the value of
$ZLE_LINE_ABORTED in $HONG_XU_LINE_ABORTED and only do so if
$ZLE_LINE_ABORTED is non-empty.

-- 
Mikael Magnusson