Compare Plugin - Unable to turn off Synchronize Vertical Scrolling Version 7.6.6 with Compare V2

[PeterJones]

@pnedev said:

Strictly speaking it is not exactly a “compare” function. Compare finds similarities and differences and aligns them.

But no diff algorithm is perfect. There are times when I just insert code between, so a “perfect” diff/compare should show lines matching, then lines inserted, then lines matching again… but often, depending on how complicated the insert was, it will find enough common characters that it shows lines matching, then lines drastically changed and lines deleted, then a whole bunch of lines inserted.

Here’s one that kindof shows the issue:

Original

SomeGroup(param1, param2)
SomeGroup(param3, param3)
SomeGroup(param4, param4)
SomeGroup(param5, param5)
SomeGroup(param6, param6)

SomeGroup(param1b, param2)
SomeGroup(param3b, param3b)
SomeGroup(param4b, param4)
SomeGroup(param5b, param5b)
SomeGroup(param6b, param6)

I will call those two groups of lines A and B. If I now insert a group C between those two, which is similar but not identical to B, and then edit B also, so it looks like:

Inserted and edited B

SomeGroup(param1, param2)
SomeGroup(param3, param3)
SomeGroup(param4, param4)
SomeGroup(param5, param5)
SomeGroup(param6, param6)

SomeGroup(param1b, param2)
SomeGroup(param3, param3b)
SomeGroup(param4b, param4)
SomeGroup(param5, param5b)
SomeGroup(param6, param6)

SomeGroup(param1b, param2)
SomeGroup(param3, param3b)
SomeGroup(param4b, param4)
SomeGroup(param5, param5b)
SomeGroup(param6, param6)

I’d really like it to show the 5 inserted lines of code and blank line (section C), and the changes in the group B… but insteead, it shows inserts/changes interleaved rather than a group of inserts followed by a group of edits.

This is exacerbated by the blocks being longer…

I understand that’s a deficiency in any diff algorithm, and not something you can fix. But I would solve it by

Now assume it’s a page or two in each block, and t

When I run across a situation like that, I break the sync to scroll down on the “longer” side until I see the block that I knew was originally “B”, while still looking at the top of where “C” went; I then start adding blank (or comment) lines to the “left” file, refreshing the comparison frequently, and watch the “C” highlights on the LEFT, and watch the “B” hightlights on the RIGHT – waiting until both the “C” group and “B” group show up as the diff I want, vs the default diff.

It would make more sense with longer blocks, and being able to show you how I have things scrolled… but this is proof of concept.

I did 5sec pauses on the first/wrong compare, and the final/right compare. And if that’s not long enough, here are the two compares alone:

To sum up: at every step along the way, I am comparing… I am just doing edits/scrolls, so I want to watch different segments of the compare, depending on whether I’m on the LEFT or the RIGHT – but I still want to see what portions on the LEFT the diff/compare thinks are changed and what portions on the RIGHT the diff/compare thinks are changed.

[Jeff Miller]

Actually both the “This is NOT the diff I want to see” and “This is really the diff I want to see” work for me, as long as I can
toggle off the Sync. Manually reposition the beginning of the Comparison point displayed and then turn the sync back on.

More often then not, I am looking for similarities in Logic between two sections for the place to insert several lines of code that had been used for another client. An exact Diff would usually not match because bits and pieces might have different names. It would be sort of like I am looking for the Lines in Green on the Right that Do not appear at all in the Lines on Left in relatively the same logic blocks. Conversely looking for the Lines in Red on the Left that Do Not appear at all in the lines on the Right, that were probably deleted and Superseded.

Then directly editing and Saving.

Usually after doing one of these Edits, that Source File is then passed through a Parser that performs the Syntax Checking and compiles it into closer to its final form. Then additionally running it through Git to further document changes and the features it brings to the table.

Then when there is a System Wide Update of the Original Base Code, run Kdiff3 against the entire before and after directories. Most Cases using the Kdiff3 functions to deal with slight alterations, then resorting to launching the Before and After files to Notepad++ where the human element must come into play.

The other Notepad++ tool I make heavy use of is “Search - Find” and “Search - Find in Files”.
A field may have changed names in a Table and all of the Code has to be Adjusted, or a File/Path name is directly referenced in the Text and has to be relocated to its new File/Path name throughout the subsystem.

The Actual Applications run in Windows/Mac/Linux and are primarily Linux Based, but the GUI Interface from Tortoise Git, KDiff3, and Notepad++ are the Tools primarily used in development.

[pnedev]

Hello @Jeff-Miller and @Peter-Jones,

Sorry for the late reply guys.

Jeff,

Manually Align them, and then turn the Vertical Sync back on, works great.

Turning vertical sync back on will NOT do re-compare from your new alignment point. So you are visually “comparing” the stanzas yourself, correct?

Peter,

But no diff algorithm is perfect …

I know what you are talking about.
I remember the times when I was using BeyondCompare extensively and there were cases when I used to set manual sync points. Those were triggering re-comparison from the points set forward.

I am much or less close to releasing a new compare plugin based on the current Compare but with lots of additions, extensions and fixes.
Here are the x86 and x64 versions of my development build for you to try.
Please manually delete your current ComparePlugin.ini config file and manually replace your ComparePlugin.dll with the new one.

The new version doesn’t have the possibility to turn off and then back on the vertical sync (it actually does the vertical sync itself without relying on Notepad++ because of the complicated alignment) but it has another function that might be what you are looking for.
It is called Compare Selections and what it does is simply comparing only the selected lines portion of the two files.
So your use case might look like this:

1. Compare the whole files.
2. When you find your “stanza” or manual compare point select the lines after it in both files (or only the lines of the stanzas you want compared) and do Compare Selections.

Tell me if it works for you.
Any other feedback is appreciated as well.

BR

[andrecool-68]

Hello @pnedev
This version of the plugin works without freezes, unlike “ComparePlus”!

[andrecool-68]

@pnedev
The old version of ComparePlugin 2.0 still runs faster than ComparePlugin 3.0

[Meta Chuh]

@andrecool-68

This version of the plugin works without freezes, unlike “ComparePlus”!

i can still reproduce the freeze you discovered, when comparing english.xml with russian.xml using the new ComparePlugin.dll from above, same as ComparePlus, but maybe a few seconds faster.

the freeze happens for me, when reaching about the middle of the progress bar, close to the cancel button.
after the freeze, the progress bar jumps right to the end.

does it run fast for you now ?

@pnedev

many thanks.
as i can see this build is called Compare again, and not ComparePlus.

will you make two separately developed projects, or is it just temporary, and everything above 2.0 will be called ComparePlus ?

big thanks, your work is very appreciated. 👍
best regards.

[andrecool-68]

@Meta-Chuh
Here is a comparison ComparePlugin 2.0 ComparePlugin 3.0 and builds the latest version of ComparePlus
The first version of the ComparePlus plugin generally hung for 2 minutes (this project was not preserved)

[PeterJones]

@pnedev said:

… Compare Selections. Tell me if it works for you.

Oh, that’s just awesome. I will now be taking the effort to do my compares using this plugin via samba shares, rather than living with the outdated diff tools on the linux box, a lot more often than I used to.

Thank you.

[andrecool-68]

@pnedev
Notepad ++ with the version of the plugin ComparePlugin 3.0 hangs tight!

Notepad++ v7.6.6 (64-bit)
Build time : May 1 2019 - 23:51:03
Path : C:\Users\Uzeer\Desktop\npp.7.6.6\x64\notepad++.exe
Admin mode : ON
Local Conf mode : ON
OS : Windows 7 (64-bit)
Plugins : ComparePlugin.dll DSpellCheck.dll HTMLTag.dll JSMinNPP.dll MarkdownViewerPlusPlus.dll mimeTools.dll NppConverter.dll NppExport.dll NppMarkdownPanel.dll PluginManager.dll VisualStudioLineCopy.dll XMLTools.dll _CustomizeToolbar.dll

==================================================
Файл процесса     : notepad++.exe
Событие           : Не отвечает и была закрыта
Время события     : 08.05.2019 16:13:59
Пользователь      : Uzeer
Путь к процессу   : C:\Users\Uzeer\Desktop\npp.7.6.6\x64\notepad++.exe
==================================================
Version=1
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EventTime=132017948399693149
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UI[3]=Notepad++ : a free (GNU) source code editor не отвечает
UI[4]=Windows может поискать решение проблемы в Интернете. При закрытии не отвечающей программы может быть потеряна несохраненная информация.
UI[5]=Выполнить поиск решения и закрыть программу
UI[6]=Выполнить поиск решения и закрыть программу
UI[7]=Закрыть программу
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[pnedev]

Hello all,

Thank you for the feedback, I appreciate it.

@Meta-Chuh ,

will you make two separately developed projects …

No, I just linked here a state of the development before the transition to the new name. It is to ease the manual installation and reduce the possibility for conflicts if one has both ComparePlugin and ComparePlus installed.
Beside that, ComparePlus current development state is not quite stable because of the ongoing changes.

@andrecool-68 ,

This is just a development version but nevertheless it shouldn’t hang.
I’m kind-of confused because you are saying it is faster than ComparePlus (meaning it works) but then you say it hangs.
Does it hang every time you compare the same files?
Could you please try removing the other plugins and keep just the development ComparePlugin (v3 RC) and test again?
I don’t usually test x64 build myself as I don’t have such setup.
Thanks.

Just FYI, the development compare (no matter if v3 RC or ComparePlus) is considerably slower than Compare v2 when comparing files with lots of replacement lines because it tries to “intelligently” find the changed lines (which brings more accuracy on the price of slower compare). As I said, the compare is perceived to be slower only in the case there are lots of replacements and lines that “look” similar.
To get an idea, look at the following compare excerpt screenshots (first Compare v2, followed by ComparePlus):

As you can see from the images, Styler and Prefix mode sections are with changed order and ComparePlus tries to match the commands IDs as well (not yet perfect but at least better compare results than Compare v2).

I’m still in the process of developing the smart change detection and I will try to make a good compromise between accuracy and compare speed.

BR

[pnedev]

Seems like image link sharing failed.

How can I do this?
Thanks.

[andrecool-68]

@pnedev
Removed all plugins except ComparePlugin 3.0, and periodically Notepad ++ hangs.

[Meta Chuh]

@pnedev

i think you can not embed google drive images, as they don’t provide a static image url to e.g. ComparePlus.png.

best regards

[Alan Kilborn]

@Meta-Chuh said:

google drive

Plus google drive is simply bad because so many corporations block it; you may not get the best answers if the best answerers can’t see it.

[Jeff Miller]

The Compare 3.0 looks like it will work.

The only issue I think is on the Notepad++ Side.

The Selecting the Sections requires some extra work, unless I am missing something.

So now I open Both Files and “Move/Clone Current Document” -> “Move to Other View”

Then on the Left View Do a Find for the
Beginning of what I want to Compare.
Then do the
“Edit” -> “Begin/End Select” – Start Selection

Then Scroll Down to the End of the Section in Question.
“Edit” -> “Begin/End Select”. – End Selection

Then repeat on the Right View Do a Find for the
Beginning of what I want to Compare.
Then do the
“Edit” -> “Begin/End Select” – Start Selection

Then Scroll Down to the End of the Section in Question.
“Edit” -> “Begin/End Select” – End Selection

Then “Plugins” -> “Compare” -> “Compare Selections”

So once in this mode, it works well.

It is just a case of additional steps that have to be accomplished if the Stanza’s Don’t Layout the Same.

Also someone had a question about recomparing when breaking and re-establishing the Sync.
Essentially the first Compare pass would mark up the Text in the Various Colors. Then when moving the two sides Separately, we did not want it to run a compare again, just keep the Color Markup that was alread processed.

[guy038]

Hello, @pnedev, and All,

Thank you so much for the future comparePlugin v3.0, with quite a lot of new features ;-)) Still testing it !

I’m intrigued by the new option Highlight Diffs on Character Level ! What does this mean ?

Good luck in your coding process !

Best Regards,

guy038

[pnedev]

@Meta-Chuh ,

Thanks for helping with embedding the images.

@andrecool-68 ,

Removed all plugins except ComparePlugin 3.0, and periodically Notepad ++ hangs.

But it doesn’t crash like before, right?
I’ll look into it, thanks.

@Jeff-Miller ,

Yes, unfortunately that’s the case with Compare 3. You need to select manually the sections you are focusing on. Disabling and re-enabling vertical scroll sync in Compare 3 is something that might not be that easy.

Rewriting part of my previous post here to make images directly visible:

---

Just FYI, the development compare (no matter if v3 RC or ComparePlus) is considerably slower than Compare v2 when comparing files with lots of replacement lines because it tries to “intelligently” find the changed lines (which brings more accuracy on the price of slower compare). As I said, the compare is perceived to be slower only in the case there are lots of replacements and lines that “look” similar.
To get an idea, look at the following compare excerpt screenshots (first Compare v2, followed by ComparePlus):

As you can see from the images, Styler and Prefix mode sections are with changed order and ComparePlus tries to match the commands IDs as well (not yet perfect but at least better compare results than Compare v2).

I’m still in the process of developing the smart change detection and I will try to make a good compromise between accuracy and compare speed.

[pnedev]

This post is deleted!

[pnedev]

Hi @guy038 ,

Thank you.

I’m intrigued by the new option Highlight Diffs on Character Level ! What does this mean ?

It shows the differences on character level instead of “word” level. It can help finding the exact character mismatch between two very similar words but it is particularly useful if you compare hex sequences.

Look at the following example of compare results with Highlight Diffs on Character Level OFF and ON respectively:

BR

[guy038]

Hi, @pnedev, and All,

Indeed, your pictures are very explicative ;-)) It’s easy to see the benefit of that option, in some cases :

• With this option OFF, it supposes that lines 5 to 7 are completely different, so that 3 lines were added in the hex 1.txt file and 3 lines were deleted in the hex 2.txt file

• With that option ON, it supposes that lines 5 to 7 are rather identical and that only 2 single characters are different, in each line, between the two files

Regards,

guy038