Thanks for contributing! 😄 First of all, you need to inform DB4S that there is a Dutch translation.
Please refer to the existing lines and add them to the following files:

• ./CMakeLists.txt:303
• ./src/src.pro:19:200
• ./src/translations/flags/flags.qrc:21
• ./src/translations/translations.qrc:19

I'm on mobile right now, so I simply made a review, but if you need more information, let me know. 🤔

@lucydodo You are most welcome! My pleasure to contribute to such a great project.

Thanks for the pointers. I had already changed the files you mentioned, for testing purposes, but I just wasn't sure about including those changes in the commits for the pull request. I figured perhaps you, the maintainers, would want to keep control over such final configurations. But, I'll gladly add those references myself. Shouldn't take too long.

edit:

Done!

@lucydodo I think I've amended the translations file with all your requested changes. What's the correct course of action now? Should I simply commit and push again? I assume that that will erase all your requests for changes, and I'm not sure whether that is desirable. Please advice. Cheers.

Just commit and push and GitHub will be clean it up again :)

Thanks for responding despite the many requests for modification. I modified and force push the following:

• The tab spacing in CMakeLists.txt was previously 4, but it was set to 8, so I corrected for 4.
• '...' item in PreferencesDialog context was not translated, so I replaced by original text.

Now squash and merged. I will cherry-pick in the v3.12.x branch soon.
Thanks to this PR, our project has taken a step further. Thank You! 😄

I took the liberty of adding newlines in the tooltips for function documentation,
because they were too long to be completely visible otherwise.

It doesn't problem you make a newline in the tooltip for readability.

I took the liberty of adding a few extra accelerators here and there, but have not applied this consistently.
In the next iteration I could either remove them, if you want, or add them more consistently.

I'm not sure if adding an accelerator not specified in the original code works.
I tried to test it, but none of the accelerators work on my Mac(even English env). I'll test it on a Windows PC.

Some buttons in dialogs, such as Cancel, OK and Restore Defaults, and in some context menu's items, such as Copy, Paste, etc., were not translatable and/or don't appear as translated.
Perhaps some are provided by the system and cannot be overwritten?

Cancel, OK and Restore Defaults, these buttons are text assigned through the QtStandardButtons provided by Qt.
So the text of this button we can NOT translate and Qt Team needs to translate it,
but I don't know why the Dutch language translation file is not in the Qt source tree, but it is confirmed that it is none.

Links in tooltips, such as Regular Expression in Wikibooks, don't appear to work

Tooltips with function documentation don't show Unicode (accented) characters,
they appear as the infamous replacement character

Could you please give me more information on the issue?

@lucydodo Haha, no worries — they were all minor changes that were easily fixed. And you're welcome! Glad to see everything went pretty fast and reasonably smooth! 👍

And apologies about the indention issue in CMakeLists.txt. I don't know why my editor chose to change the tab spaces. I'll make sure to check for that next time, before I make a commit.

Anyway, looking forward to see my translations in the upcoming release. 😄

I'm not sure if adding an accelerator not specified in the original code works.
I tried to test it, but none of the accelerators work on my Mac(even English env). I'll test it on a Windows PC.

I've tested this on Ubuntu 18.04.5 and there it works fine. It looks like I can add any accelerator I choose, even if no accelerator is defined in the original text yet.

Could you please give me more information on the issue?

Okay, so about

Links in tooltips, such as Regular Expression in Wikibooks, don't appear to work

See this video on Imgur. When I click help on the regular expression option (in the Search and Replace dialog), a link to Wikibooks appears, but when I click on it, nothing happens (at least on Ubuntu 18.04.5). Links in the About dialog, however, do work.

...and about

Tooltips with function documentation don't show Unicode (accented) characters,
they appear as the infamous replacement character

See this image on Imgur. When I type a SQLite function name in the SQL editor, documentation about the function appears in the tooltip. However, Unicode characters (characters with accents, like é, ë, ó, ï, etc.) are not rendered correctly, but shown as the replacement character �.

Links in tooltips, such as Regular Expression in Wikibooks, don't appear to work

See this video on Imgur. When I click help on the regular expression option (in the Search and Replace dialog), a link to Wikibooks appears, but when I click on it, nothing happens (at least on Ubuntu 18.04.5). Links in the About dialog, however, do work.

I added that link and later realized that it cannot be clicked. I left it, nevertheless, thinking that it might be some glitch in my environment. We can remove automatically from all the translations if we confirm that it is broken and has no possible fix.

...and about

Tooltips with function documentation don't show Unicode (accented) characters,
they appear as the infamous replacement character

See this image on Imgur. When I type a SQLite function name in the SQL editor, documentation about the function appears in the tooltip. However, Unicode characters (characters with accents, like é, ë, ó, ï, etc.) are not rendered correctly, but shown as the replacement character �.

That's strange, because it seems like a reproduction of #1206, one of the first bugs that I supposedly fixed in sqlitebrowser 😃 I don't reproduce it in Spanish, and now in Windows and v3.12.0. Which encoding are you using in your platform?

@mgrojo My system uses nl_NL.UTF-8 and I'm simply using the standard Qt Linguist software to edit the .ts file, which
I assume simply edits and saves in UTF-8, as well.

To be sure perhaps you could try to run the .ts file (or only the relevant bits with the accented chars) through some encoding detection software to verify whether it's actually UTF-8, or I could try to do this tomorrow for you, as well.

However, having quickly reviewed the commit file in your mentioned bug report, I see that it calls the method isUtf8() and then mutates the QByteArray to either Latin 1 or UTF 8. It might be saver to simply always use UTF-8 since (I believe, not entirely sure) Latin 1 is a subset of UTF-8 anyway, unless there are some other intricacies with the isUtf8() method and Scintilla, that I am unaware of. Sorry, ignore that part, only the first 128 bytes (ASCII) are a subset. If my statement was true, the � would probably not have appeared. 😉 But this point still stands:

My suspicion is that isUtf8() incorrectly assesses the CODEPAGE of the environment (or of the language, or whatever it bases its decision on) as Latin 1, when it actually should assess it as UTF-8. But I know next to nothing about DB4S' codebase, Qt or Scintilla, so I'm just guessing based on the quick glance I had in your mentioned commit.

Hope this helps.

In your image the lag() function appears, but it is not currently defined in the translation files, so I'm a bit confused.
Edit: ok, I've found it now. Everything seems in order in the translation file.

@Codifier, I was writing that I don't reproduce the problem, that the call tip for lag(expr,offset) shows correctly the 'ë' in 'geëvalueerd' and diacritics in Spanish are also displayed correctly. But after playing a bit I've discovered that you have to select the lag() version using the arrows in order to reproduce the problem. If you access the tip writing lag(expr, then the text is displayed correctly. So it seems that there is still a problem in QScintilla. I will take a look.

@mgrojo O wow, you are right! I did not notice earlier that it does work correctly when it shows the direct function documentation, when typing the exact function signature.

I wish I could be of more help to you, but I'm afraid I'd probably have to take a course on Qt, Scintilla and probably C++, as well, first. 😬 But good luck — I'm sure you will find it.

And, to be fair, I don't think it's really a show stopper. It's a mild annoyance at most, in my opinion. Especially now that you've discovered it only happens when pressing the arrow.

Don't worry. I was easy after the first correction. Now it's fixed in the master and v3.12.x branches. Thanks for pointing it out.

@mgrojo Nice one! 👍 And you're welcome.