@Aria-James,

Recommended plugins for C/C++ syntax highlighting, auto-indentation, or even code suggestions for Arduino.

Syntax highlighting occurs without plugins in Notepad++. You can set Settings > Style Configurator > Language: C++ to have user ext.: = ino so that Arduino sketches automatically get associated with C++ language.

Further, you can set the USER KEYWORDS # > user-defined-keywords per my post here to add the Arduino-specific keywords to the syntax highlighter.

Notepad++ does some auto-indentation natively: see Settings > Preferences > Indentation > Indent Settings = cpp to control tabs-vs-spaces on a per-language basis, and the Auto-indent = basic vs advanced which applies globally throughout Notepad++ (described in more detail here in the User Manual). But it’s not super-fancy, and is only “as you add new lines”, so it won’t clean previous code. @Michael-Vincent shares an example script for the NppExec plugin that is able to run an external “pretty print” utility for multiple languages depending on file extension in this post: his script does it for C, HTML, Perl, and Python, but once you understand what you shared, you could definitely call one for a different language (like C++: I am betting that most c pretty-printers are really c++ pretty-printers, too).

Code suggestions – there is some auto-completion, but it won’t go as far as code suggestions (and it’s definitely not going to be a copilot AI or anything like that).

Is there a way to integrate serial monitor output or debugging processes within Notepad++ or via external tools? Is there a recommended workflow that allows me to combine Notepad++ with the Arduino IDE or PlatformIO for compiling and uploading, while primarily coding in Notepad++?

I’ve never tried anything like that, so maybe someone else will be able to give more advice on that end.

@Alan-Kilborn

Hi, Alan, I tried this (i.e. your last suggestion) and I think it worked the first couple times I tried it, but now it has stopped working.

I have tried restarting both the software and the OS (WIndows 10). I changed both the english.xml and my newly created english_customizable.xml. The localization file changes back to English on each restart, but like I mentioned I changed that file as well, so that it has <tab-untitled-string value=“”/>.

@Alexander-Anisimov said in Notepad++ lags when text files are on FTP:

You may be right. In my understanding, WebDAV is another way of connecting protocol but still is FTP, although different.
May be I am wrong.

You are wrong. :-)

WebDAV is a protocol that is similar to HTTP that web browsers use with web servers. As WebDAV looks like HTTP on the network it works with NAT, firewalls, web proxies, etc. Accessing a WebDAV server is just like accessing a web server. Many web browsers have built-in support for WebDAV.

That said, if there are bandwidth or latency issues accessing a particular WebDAV server then all applications, including Notepad++ will be impacted.

WebDAV itself is not slow or laggy.

If I was stuck with needing to edit files that are on a slow or laggy server then I probably would create script that first copies the file to the local hard drive, runs Notepad++ on the file, and then keeps an eye on both the local and remote copies of the file. If the local copy changes then I push it out to the remote server. If it changes on the remote side then pop-up a warning. A tricky aspect is that Notepad++ allows people to exit Notepad++ and then resume editing. Thus I can’t depend on Notepad++.exe going away as a signal that I no longer need to monitor and synchronize that file but also need to watch Notepad++'s session.xml file.

@Marshall-Brooks said in Double Ctrl+F won't bring the find dialog to the front of the primary window.:

Also - somewhere along the way (8.81 or prior), Alan’s suggestion was implemented:

v8.3.3 in March 2022, so a few months after Alan’s 2021 post. See https://github.com/notepad-plus-plus/notepad-plus-plus/wiki/Changes#833

@Alexander-Anisimov said in Copying file itself into clipboard in Notepad++:

how can I bind a hotkey something like Ctrl+Shift+C to it?

That’s explained in the FAQ. Search that page for “shortcut” (step 4 of the instructions) if you didn’t notice it.

@Ertan-Küçükoglu said in Pascal multi line string highlight:

It would be nice to have it visualized as string in Notepad++

Notepad++ uses a library called “Lexilla” to handle deciding what characters in a document to syntax highlight. When I use their testbed “SciTE” editor, it is showing that it’s treating the line ending with ''' as an “unterminated string”. But it apparently doesn’t know that Delphi recently added multi-line strings with the triple-quote syntax.

The Lexilla project has ome reported issues about Pascal and Delphi – you can look through those, and see if any mention the multi-line strings. If not, you might want to request that they add it. Once they add it, and Notepad++ updates its Lexilla library, then Notepad++ could add that new styleID to the Style Configurator options for Pascal. But until they add the support, there’s nothing Notepad++ can do about the official lexing of the language.

However, as a workaround, there is a plugin called “EnhanceAnyLexer”, which allows you to add regex-based foreground colors. Doing multi-line stuff with a regex is risky if there’s a mismatched triple-quote somewhere, but once you install EnhanceAnyLexer, open your Delphi/Pascal file, use Plugins > EnhanceAnyLexer > Enhance current language, which will open up a [pascal] section in the EnhanceAnyLexerConfig.ini. Set it to the following

[pascal] ; Everything between pairs of triple-ticks is colored cyan 0xCCCC00 = (?s)'''.*?''' ;excluded_styles = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,20,21,22,23

(make sure you use the ; or # to coment out the excluded_styles, otherwise it won’t color properly; you can, of course, pick any 0xBBGGRR values you want to choose your own color, as described in the comments of the INI file.)

With that INI saved, it will mean that from now on, the EnhanceAnyLexer plugin will color triple-quote multi-line strings in Delphi/Pascal files. like this example:
5ba5abdd-c30f-4536-b470-290f55647f1a-image.png

Since some people aren’t clear when I’ve given such instructions: once you save the EnhanceAnyLexerSettings.ini, the EnhanceAnyLexer will always apply that regex-based coloring to Pascal/Delphi files (you don’t have to run Enhance current language every time you want to turn it on; with the plugin installed, and the ini saved, it will be automatic).

@Denis-Rionnet said in Notepad++ has a Reload false alarm / bug? "This file has been modified by another program. Do you want to reload it"? even when it hadn't been recently modified at all?!:

I understand that this behaviour can be disabled via the settings panel (it works: the warning gets muted)).

How and where? nvm - found it with Google - Settings>Misc>File Status auto-detection.

I’m having the same issue - for me, typically when I don’t save the file in NPP, lock the computer, and then unlock it and go back to editing.

Files are stored on a network hard drive (not Cloud storage). File protocol is SMB, if that is what @ekpalypse is asking.

I don’t think I’ve seen the message in NPP previously, but I’ve just started using it heavily.

I agree, the feature was handy when it worked.

For me, nobody else edit’s these files, and the one other program that I might edit them in notifies me if they were changed in NPP, so I’m okay with disabling it, but I’d like to see it fixed.

Debug info:
Notepad++ v8.8.1 (64-bit)
Build time : May 3 2025 - 18:41:09
Scintilla/Lexilla included : 5.5.6/5.4.4
Boost Regex included : 1_85
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line : “Z:_Brooks Work\FM ExtendScript\Scripts_2025\OPS_JG_Update_Variables.jsx”
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
Periodic Backup : ON
Placeholders : OFF
Scintilla Rendering Mode : SC_TECHNOLOGY_DEFAULT (0)
Multi-instance Mode : monoInst
File Status Auto-Detection : cdEnabledNew (for current file/tab only)
Dark Mode : OFF
OS Name : Windows 11 Enterprise (64-bit)
OS Version : 23H2
OS Build : 22631.5472
Current ANSI codepage : 1252
Plugins :
JSMinNPP (1.1905.1)
mimeTools (3.1)
NppConverter (4.6)
NppExport (0.4)
NPPJSONViewer (1.34)
XMLTools (3.1.1.13)

Hello, @ottiditto, @pbarney, @peterjones and All,

A tiny piece of information : The & character is not a regex character, so the following syntax is sufficient :

FIND (?-s)^((.*? layer=")(25)(".*?>&gt;NAME.*\R))

REPLACE ${1}${2}21${4}

Best Regards,

guy038

@PeterJones

Sorry I wasn’t trying to stir up trouble. Either you are correct or I may simply have mangled things by going in the wrong order.

Here is a pic showing miswritten regex I found via AI, which was what I was trying to correct. I did not find the ErrorList language feature until after writing my initial post.

Screenshot_20250618_203154_RVNC Viewer.jpg

@PeterJones Thanks for the input.

Surprisingly, just dragging and dropping all the files at once onto Notepad++ opens all the files in about 5 seconds for 1000 files.

Then the XML Tools takes about 10 seconds to prettify all opened files.

Then just go to File > Close All so to not have to close each file manually.

Will do it that way.

Would be great to update the XML tools plugin if someone’s able and it is not to much work.

Or just adding the Pretty Print feature directly to the Find In Files feature as extra function for the next Notepad++ update.

@PeterJones

That worked! Thanks for your help!

Ken

@Paul-Cobben said in Cannot get Autocompletion to work for my own language:

What am I doing wrong?

Per the User Manual section on the autoCompletion definition file syntax (https://npp-user-manual.org/docs/auto-completion/#create-auto-completion-definition-files), with emphasis added:

The basic character set used to recognize keywords is made of letters a-z, A-Z, digits 0-9, and the underscore _. Punctuation might work for auto-completion; however, if you want to use the parameter hints, you should not use punctuation in the keyword name.

You are relying on the : at the start of the keyword and the - in the middle. This is a double-whammy against you. However, if you go to Settings > Preferences > Delimiter and set ⦿ Add your character as part of word to :- so that those two characters are more “word-like”, then restart Notepad++, it will be able to show up in the function-name autoCompletion:

6c680cbc-5b88-4169-b76d-affbf204618e-image.png

However, the parameter hint portion has two more problems:

The easy one is you need func="yes" in the <KeyWord name="..." func="yes"> tags, otherwise Notepad++ doesn’t pay attention to the overload/param elements nested in the KeyWord. This might not ever work, because the internal regex that Notepad++ uses to determine if it’s valid to prompt for function parameters refuses to work because of the - in the keyword. If I have the delimiter setting as above, and added a keyword :FUNCT_SETTEXT which has the : as the prefix but does not include the hyphen, like:<KeyWord name=":FUNCT_SETTEXT" func="yes"> <Overload retVal="void" descr="Set a value in the STATUS.DAT file."> <Param name="Section" /> <Param name="Key" /> <Param name="Value" /> </Overload> <KeyWord> then when I type :FUNCT_SETTEXT(, it will prompt with the parameter hints as well: bf355c03-a51b-45ad-b0a3-47534ee92e2d-image.png As a workaround, you could “cheat” the - limitation by defining a second keyword which includes just the stuff that comes after the - in the keyword, like,<KeyWord name="SETTEXT" func="yes"> <Overload retVal="void" descr="Set a value in the STATUS.DAT file."> <Param name="Section" /> <Param name="Key" /> <Param name="Value" /> </Overload> </KeyWord> This will allow Notepad++ to see the - as a boundary and then the SETTEXT as a separate function, which then allows for the function parameter completion, as in this screenshot: d52f6232-de08-4b85-89cc-e2b852801a90-image.png
(notice that it thinks the function is SETTEXT, not :FUNCT-SETTEXT, when doing the parameter prompting) Since punctuation isn’t guaranteed in function/parameter autoCompletion, that’s likely not going to be “fixed”, as it’s already relying on an unspecified edge case.

In conclusion, if you just want the function autocompletion for the names with leading : and embedded -, you can do that by setting the Delimiter setting to :- , and it will work as in my first screenshot. If you want parameter hints when there are not hyphens in your function name, you can get that by setting the func="yes" in your <KeyWord...> tags, and that will work as in my second screenshot. Unfortunately, you cannot get the parameter hints directly if your keyword has the - because of a limitation in the internal processing that decides when parameter hints can be shown (though you can trick it as shown in item3).

@Ekopalypse thanks for the info. I was hoping to avoid having to create custom autocomplete but cant have everything :)

Title says Win7 – works on Windows 11 too

A bit late, but this post was the key to getting things working on Windows 11 for me. I had stuck with the 32-bit version for years and had installed it on a non-default disk. When I upgraded to the 64-bit version everything related to the right click menu stopped working.

Using regedit to insure that this key pointed at my 64-bit install got things right.
[HKEY_CLASSES_ROOT\Applications\notepad++.exe\shell\open\command]

double click on default to see the actual key if you haven’t used regedit before.

@PeterJones
Many thanks!
Regards,
RPrinceton

@pbarney BIG thanks as this is was I looking for.
Just for the record - just checked and 2 entries is also fine:

Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\SystemFileAssociations\.ps1\Shell\Edit with Notepad++ from line 450\Command] @="\"C:\\Program Files\\Notepad++\\notepad++.exe\" \"%1\" -n450 %*" [HKEY_CLASSES_ROOT\SystemFileAssociations\.ps1\Shell\Edit with Notepad++ from line 450] "Icon"="C:\\Program Files\\Notepad++\\notepad++.exe"

and perfect icon appear :)

Sadly, it’s missing the lang attribute so it’s just short of true perfection:
16e31b41-90cb-4378-837f-0ef561d08d53-image.png

@NebulaPulseX
MultiReplace covers the complexity you’re dealing with quite well. While it doesn’t support syntax checking, it handles regex, variables, and multiline edits. Bulk replacements work across all open files in Notepad++. Folder-based processing is on the roadmap.