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Implement --invert to remove tags matching selector. #81

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Implement --invert to remove tags matching selector. #81

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wolfgang42
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Fixes #74. I've never written any Go before, so I'd appreciate a code review. Marked WIP because of that and also because I want to add tests but haven't looked at the test harness hard enough to figure out how yet.

@wolfgang42
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The code I wrote has some sort of bug. Minimal test case:

echo '<li><a></a><a></a></li>' | pup -v 'li a'

Should delete both <a> tags, but actually only deletes one. I suspect some sort of issue with my equality comparison, but I'm still working on figuring it out.

@wolfgang42
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Closing as I couldn't figure out what was wrong with my code and no longer need to do this for the project I was working on anyway.

@wolfgang42 wolfgang42 closed this Dec 7, 2017
@Matheus28
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Matheus28 commented Dec 20, 2017 •
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It seems that once you remove the node in line 90: root.RemoveChild(node), the next iteration is gonna call node.NextSibling on that orphaned node, thus ending the loop for that subtree prematurely.

This is a good feature, I think it'd be a good idea to get the PR reopened.

@wolfgang42
Update tests for json{}
ddf33ef 
On the assumption that this is currently correct
but the tests were never updated after the formatter changed.

Closes ericchiang#80.
@wolfgang42
Modify tests to support multiple arguments.
3b0097e 
Also, update tests for --number to actually check that flag.
Previously they were checking for a '-n' tag inside an 'li' tag,
producing the empty string.
I don't think this was the intended result.
@wolfgang42
Implement --invert to remove tags matching selector.
be5dee7
@wolfgang42
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@Matheus28 Thanks for the hint, I really should have noticed that I was mutating the list while I was iterating over it. I've updated the code to save a list of nodes to be removed and then remove them once they've all been found.

@wolfgang42 wolfgang42 reopened this Feb 17, 2018
@wolfgang42 wolfgang42 changed the title WIP: Implement --invert to remove tags matching selector. Implement --invert to remove tags matching selector. Feb 17, 2018
@wolfgang42
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Also, I added tests. In the process I also updated some existing tests which seemed to be incorrect. See commit messages for details.

@eigengrau
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Would be great to see this merged!

@splitbrain
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This patch worked fine for me and should really be integrated.

@wolfgang42 wolfgang42 mentioned this pull request Sep 27, 2019
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@Aeres-u99
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Why is it not merged yet? its really something very useful imho.

@mre mre mentioned this pull request Nov 30, 2021
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@frioux
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frioux commented Jan 24, 2022

I merged this into https://github.com/frioux/pup, fyi

@Aeres-u99
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Truly thanks \o/

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Successfully merging this pull request may close these issues.

Feature Request: strip tags that match a selector
6 participants
@wolfgang42 @Matheus28 @eigengrau @splitbrain @Aeres-u99 @frioux