Show ZWSP (zero with space) as code mining #1437

marcushoepfner · 2023-12-19T15:41:38Z

For more information refer to https://www.compart.com/en/unicode/U+200B To get a ZWSP refer to https://zerowidthspace.me/

...r/src/org/eclipse/ui/internal/texteditor/codemining/ZeroWidthSpaceLineContentCodeMining.java

github-actions · 2023-12-19T16:20:22Z

Test Results

0 files - 3 018 0 suites - 3 018 0s ⏱️ - 2h 13m 29s
0 tests - 8 226 0 ✅ - 7 977 0 💤 - 249 0 ❌ ±0
0 runs - 23 598 0 ✅ - 22 804 0 💤 - 794 0 ❌ ±0

Results for commit c97d0b4. ± Comparison against base commit 875996f.

♻️ This comment has been updated with latest results.

BeckerWdf · 2023-12-20T07:34:19Z

I did a quick manual test on macOS. I found the following issues:

code mining is not displayed emidiately. I have to close and reopen the editor for the code minings to be shown
Two ZWSP next to each other are drawn one the (almost?) same location. See line 4 in:

When select the "a" and the "ZWSP" in line 2 from the above screenshot to with the keyboard I have to press the right-cursor two times until the caret is behind the "ZWSP".

BeckerWdf · 2023-12-20T07:38:01Z

...g/eclipse/ui/internal/texteditor/codemining/ZeroWidthSpaceLineContentCodeMiningProvider.java

+
+public class ZeroWidthSpaceLineContentCodeMiningProvider extends AbstractCodeMiningProvider {
+
+	private static final char ZWSP_SIGN = '\u200b';


we should also add

\u200c zero width non-joiner \u200d zero width joiner \ufeff zero width no break space

See: https://plugins.jetbrains.com/plugin/7448-zero-width-characters-locator

I have updated this PR.
It works now with all above zero width characters.

Please check it.
Please also check the new preferences:

Do we need to distinguish between line begin, end and enclosing for ZWSP? IMHO not, just makes core more complex. But "enclosing" may not fit as a term then.

Do we show ZWSP as code mining or something else? Because it is not just space.

BeckerWdf · 2025-08-13T07:42:34Z

I manually tested your change.

the ZWSP is shown correctly:

but when I disable the "show whitespace character" function (e.g. via the toolbar button) the ZWSP code mining still not disappears (even though the other "white space character" stuff does correctly disappear:

BeckerWdf

See my comments above

BeckerWdf · 2025-08-13T07:46:36Z

another topic:
a user can change the color of the code minings in the "fonts and colors" preference page. If you do this you will see a mix of colors:

Maybe this can be improved:

either by ignoring the users color pref here
also use the code mining color from preferences for the other "white space character" drawing logic.

marcushoepfner · 2025-10-09T13:05:17Z

I manually tested your change.

the ZWSP is shown correctly:

but when I disable the "show whitespace character" function (e.g. via the toolbar button) the ZWSP code mining still not disappears (even though the other "white space character" stuff does correctly disappear:

fixed with the last commit.

marcushoepfner · 2025-10-09T13:07:35Z

another topic: a user can change the color of the code minings in the "fonts and colors" preference page. If you do this you will see a mix of colors:
Maybe this can be improved:

either by ignoring the users color pref here

also use the code mining color from preferences for the other "white space character" drawing logic.

I tried to ignore and overwrite the color with the one TextEditor uses for drawing spaces, tabs,...
According to

eclipse.platform.ui/bundles/org.eclipse.jface.text/src/org/eclipse/jface/text/WhitespaceCharacterPainter.java

Line 447 in 2c5b605

fg= fTextWidget.getForeground();

this is SWT.COLOR_LIST_FOREGROUND, which is black.
I even debugged the drawing of a tab and it was colored 0, 0, 0 but appeared grey. I dont get it....

BeckerWdf · 2025-10-10T14:32:30Z

I just played around a bit with the current state.
I got this:

java.lang.NullPointerException: Cannot invoke "org.eclipse.swt.widgets.Display.getSystemColor(int)" because the return value of "org.eclipse.swt.widgets.Display.getCurrent()" is null
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMining.<init>(ZeroWidthCharactersLineContentCodeMining.java:40)
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMiningProvider.createCodeMining(ZeroWidthCharactersLineContentCodeMiningProvider.java:108)
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMiningProvider.provideCodeMinings(ZeroWidthCharactersLineContentCodeMiningProvider.java:72)
	at org.eclipse.jface.internal.text.codemining.CodeMiningManager.lambda$2(CodeMiningManager.java:194)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)

BeckerWdf · 2025-10-13T05:45:34Z

fixed with the last commit.

Thanks. That looks good now.

BeckerWdf · 2025-10-13T05:46:18Z

I just played around a bit with the current state. I got this:

java.lang.NullPointerException: Cannot invoke "org.eclipse.swt.widgets.Display.getSystemColor(int)" because the return value of "org.eclipse.swt.widgets.Display.getCurrent()" is null
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMining.<init>(ZeroWidthCharactersLineContentCodeMining.java:40)
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMiningProvider.createCodeMining(ZeroWidthCharactersLineContentCodeMiningProvider.java:108)
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMiningProvider.provideCodeMinings(ZeroWidthCharactersLineContentCodeMiningProvider.java:72)
	at org.eclipse.jface.internal.text.codemining.CodeMiningManager.lambda$2(CodeMiningManager.java:194)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)

This is now also fixed. Thanks,

Issue: eclipse-platform#1002 For more information refer to https://www.compart.com/en/unicode/U+200B To get a ZWSP refer to https://zerowidthspace.me/

marcushoepfner · 2025-10-13T05:55:02Z

I just played around a bit with the current state. I got this:

java.lang.NullPointerException: Cannot invoke "org.eclipse.swt.widgets.Display.getSystemColor(int)" because the return value of "org.eclipse.swt.widgets.Display.getCurrent()" is null
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMining.<init>(ZeroWidthCharactersLineContentCodeMining.java:40)
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMiningProvider.createCodeMining(ZeroWidthCharactersLineContentCodeMiningProvider.java:108)
	at org.eclipse.ui.internal.texteditor.codemining.ZeroWidthCharactersLineContentCodeMiningProvider.provideCodeMinings(ZeroWidthCharactersLineContentCodeMiningProvider.java:72)
	at org.eclipse.jface.internal.text.codemining.CodeMiningManager.lambda$2(CodeMiningManager.java:194)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)

This is now also fixed. Thanks,

Is the color of "ZWSP" grey or black in your case?

BeckerWdf · 2025-10-13T05:55:03Z

I tried to ignore and overwrite the color with the one TextEditor uses for drawing spaces, tabs,... According to

eclipse.platform.ui/bundles/org.eclipse.jface.text/src/org/eclipse/jface/text/WhitespaceCharacterPainter.java

Line 447 in 2c5b605

fg= fTextWidget.getForeground();

this is SWT.COLOR_LIST_FOREGROUND, which is black.
I even debugged the drawing of a tab and it was colored 0, 0, 0 but appeared grey. I dont get it....

I also just debugged this. And I see that the color (for the whitespace chars comes from the styleRange not the textWidget:

eclipse.platform.ui/bundles/org.eclipse.jface.text/src/org/eclipse/jface/text/WhitespaceCharacterPainter.java

Line 449 in 2c5b605

fg= styleRange.foreground;

BeckerWdf · 2025-10-13T05:56:12Z

Is the color of "ZWSP" grey or black in your case?

black.

mickaelistria reviewed Dec 19, 2023

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...r/src/org/eclipse/ui/internal/texteditor/codemining/ZeroWidthSpaceLineContentCodeMining.java Outdated Show resolved Hide resolved

BeckerWdf reviewed Dec 20, 2023

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marcushoepfner force-pushed the zwsp branch 4 times, most recently from b082ac8 to 6cccc08 Compare August 5, 2025 14:06

marcushoepfner marked this pull request as draft August 6, 2025 06:21

marcushoepfner marked this pull request as ready for review August 13, 2025 06:35

BeckerWdf requested changes Aug 13, 2025

View reviewed changes

marcushoepfner force-pushed the zwsp branch from 692f1f0 to 55220bd Compare October 9, 2025 13:02

marcushoepfner force-pushed the zwsp branch 3 times, most recently from 0ee781a to 8b2948b Compare October 9, 2025 13:27

marcushoepfner marked this pull request as draft October 13, 2025 05:20

marcushoepfner added 6 commits October 13, 2025 07:53

Show ZWSP (zero with space) as code mining

11ac736

Issue: eclipse-platform#1002 For more information refer to https://www.compart.com/en/unicode/U+200B To get a ZWSP refer to https://zerowidthspace.me/

add other characters

d4a9c3f

rename constants

017035e

rename preference

fe17242

rename files

a4aebcb

react on toolbar action or general switch-on/off

20dfaeb

fix NPE

c97d0b4

marcushoepfner force-pushed the zwsp branch from 3b02ed7 to c97d0b4 Compare October 13, 2025 05:59


		public class ZeroWidthSpaceLineContentCodeMiningProvider extends AbstractCodeMiningProvider {

		private static final char ZWSP_SIGN = '\u200b';

Show ZWSP (zero with space) as code mining #1437

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Show ZWSP (zero with space) as code mining #1437

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