Feature Request: Show only line-final whitespace.

  • @guy038

    Thanks for your wonderful input.

    I copy pasted your text into the macros subsection, and it looks correct to me. But, it is not being recognized.
    What am I doing wrong?

  • Hi, @salviasage and All,

    You probably didn’t modify the right configuration file. First, you must know where your active configuration files are located :

    • Depending on your initial N++ installation ( with the installer OR from a ZIP or 7Z archive ), the active configuration files can be found :

      • In the same folder as Notepad++ .exe, as well as the zero-length file doLocalConf.xml, in case of a local installation of N++

      • And, in case of an usual installation of N++, with the installer :

        • In the folder %AppData%\Roaming\Notepad++, for a W7, W8 or W10 configuration

        • In the folder %AppData%\Notepad++, for a XP or Vista configuration

    Notes :

    • The environment variable %AppData% represents, generally, the path <Drive Letter>:\Documents and Settings\<User Name>\Application Data

    • BEWARE, the Application Data folder is, usually, an hidden folder. So, you’ll need to enable the visualization of hidden folders in Explorer, first !

    • I also advice you to BACKUP your active shortcuts.xml configuration file, before any change !

    Everything should be OK :-))



  • @guy038

    You are right. I modified the shortcut.xml in the notepad++ installation directory, turns out this is not where you are supposed to add your own macros. (I discovered this just now)

    And as for your macro, I just ran it and it is doing exactly what I want it to do, It marks only the line final spaces and tabs as a pink square.

    The only downfault here is, it has to be ran each time and doesn’t update itself realtime. Can this be made so it works in real time as you are typing?

    Also, how do you start a macro on startup of notepad++?

  • Hi, @salviasage and All,

    A) Regarding your first question, I’m sorry, but I cannot do better :-( To go further on and add a real-time behavior, it needs the use of a language script, as the Python or Lua N++ plugins… and that task is over my technical skills ! May be some people, of the Community, could help you ?!

    However, I really surprised why you do care about seeing trailing blank characters. Indeed, you may, either, use :

    • The Edit > Blank operations > Trim Trailing Space option ( You can, even, define a shortcut, using the Shortcut Mapper )

    • The Macro > Trim Trailing Space and Save ( Alt + Shift + S ) which, automatically, save your file, without these unneeded blank characters

    B) Regarding your second question, presently, if you have a look to ? > Command Line Arguments…, there is not any -Macro argument, which could run a specific macro, on N++ startup. But, I know that some people, already did a request for such a feature !

    Best Regards,


  • @SalviaSage

    …doesn’t update itself realtime. Can this be made so it works in real time as you are typing?

    As I pointed out earlier in this thread, the regular expression solutions aren’t going to do this type of dynamic updating. If you are willing to install the Pythonscript plugin (currently only on 32-bit Notepad++), the script given in this thread is fairly easy to adapt to do what you wish, and it updates dynamically.

    I did this modification to come up with this new script, which I call EolWhitespaceHighlighter.py :

    except NameError:
        EWH__dict = dict()
        EWH__dict['indic_to_use'] = 10  # pick a free indicator number
        def indicatorOptionsSet(indicator_number, indicator_style, rgb_color_tup, alpha, outline_alpha, draw_under_text, which_editor=editor):
            which_editor.indicSetStyle(indicator_number, indicator_style)       # e.g. INDICATORSTYLE.ROUNDBOX
            which_editor.indicSetFore(indicator_number, rgb_color_tup)
            which_editor.indicSetAlpha(indicator_number, alpha)                 # integer
            which_editor.indicSetOutlineAlpha(indicator_number, outline_alpha)  # integer
            which_editor.indicSetUnder(indicator_number, draw_under_text)       # boolean
        for editorX in (editor1, editor2):
            indicatorOptionsSet(EWH__dict['indic_to_use'], INDICATORSTYLE.ROUNDBOX, (255,0,0), 100, 50, True, editorX)  # white box rimmed in "pale violet red 2"
        def EWH__fileIsCloned(file_name_to_test):
            retval = False
            clone_detect_dict = {}
            file_tup_list = notepad.getFiles()
            for tup in file_tup_list:
                (filename, _, _, _) = tup
                if filename not in clone_detect_dict:
                    clone_detect_dict[filename] = 0
                    clone_detect_dict[filename] += 1
                    if filename == file_name_to_test: break
            if file_name_to_test in clone_detect_dict:
                if clone_detect_dict[file_name_to_test] >= 1: retval = True
            return retval
        def EWH__fileIsClonedAndIsActiveInBothViews(file_name_to_test):
            retval = False
            if editor1 and editor2:
                # both views are in use
                if EWH__fileIsCloned(file_name_to_test):
                    curr_doc_index_main_view = notepad.getCurrentDocIndex(0)
                    curr_doc_index_2nd_view = notepad.getCurrentDocIndex(1)
                    main_view_active_doc_bool = False
                    secondary_view_active_doc_bool = False
                    file_tup_list = notepad.getFiles()
                    for tup in file_tup_list:
                        (filename, _, index_in_view, view_number) = tup
                        if filename == file_name_to_test:
                            if view_number == 0:
                                if index_in_view == curr_doc_index_main_view:
                                    main_view_active_doc_bool = True
                            elif view_number == 1:
                                if index_in_view == curr_doc_index_2nd_view:
                                    secondary_view_active_doc_bool = True
                            if main_view_active_doc_bool and secondary_view_active_doc_bool:
                                retval = True
            return retval
        def EWH__getViewableEditorAndRangeTupleListList(work_across_both_views):
            retval = []
            # retval looks like these examples:
            #  [ ( editor, [ (0, 1000), (2020, 3000) ] ) ]
            #  [ ( editor1, [ (0, 1000), (2020, 3000) ] ), ( editor2, [ (4000, 5000), (6020, 7000) ] ) ]
            def consolidate_range_tuple_list(range_tup_list):
                sorted_range_tup_list = sorted(range_tup_list)  # sort criteria is first element of tuple in list
                saved_2element_list = list(sorted_range_tup_list[0])
                for (start, end) in sorted_range_tup_list:
                    if start <= saved_2element_list[1]:
                        saved_2element_list[1] = max(saved_2element_list[1], end)
                        yield tuple(saved_2element_list)
                        saved_2element_list[0] = start
                        saved_2element_list[1] = end
                yield tuple(saved_2element_list)
            def get_onscreen_pos_tup_list(which_editor):  # which_editor is editor1 or editor2 (or maybe even just plain editor)
                # loosely based upon the N++ source for SmartHighlighter::highlightViewWithWord()
                retval_tup_list = list()
                temp_tup_list = []
                MAXLINEHIGHLIGHT = 400
                firstLine = which_editor.getFirstVisibleLine()
                currentLine = firstLine
                nbLineOnScreen = which_editor.linesOnScreen()
                nrLines = min(nbLineOnScreen, MAXLINEHIGHLIGHT) + 1
                lastLine = firstLine + nrLines
                prevDocLineChecked = -1
                break_out = False
                while currentLine < lastLine:
                    docLine = which_editor.docLineFromVisible(currentLine)
                    if docLine != prevDocLineChecked:
                        prevDocLineChecked = docLine
                        startPos = which_editor.positionFromLine(docLine)
                        endPos = which_editor.positionFromLine(docLine + 1)
                        if endPos == -1:
                            endPos = which_editor.getTextLength() - 1
                            break_out = True
                        if endPos > startPos: temp_tup_list.append((startPos, endPos))
                        if break_out: break
                    currentLine += 1
                if len(temp_tup_list) > 0:
                    retval_tup_list = list(consolidate_range_tuple_list(temp_tup_list))
                return retval_tup_list
            both_views_open = True if editor1 and editor2 else False
            curr_file_active_in_both_views = EWH__fileIsClonedAndIsActiveInBothViews(notepad.getCurrentFilename()) if both_views_open else False
            if both_views_open:
                ed1_range_tup_list = get_onscreen_pos_tup_list(editor1)
                ed2_range_tup_list = get_onscreen_pos_tup_list(editor2)
            if curr_file_active_in_both_views:
                range_tup_list = list(consolidate_range_tuple_list(ed1_range_tup_list + ed2_range_tup_list))
                retval.append((editor, range_tup_list))
            elif both_views_open and work_across_both_views:
                retval.append((editor1, ed1_range_tup_list))
                retval.append((editor2, ed2_range_tup_list))
                range_tup_list = get_onscreen_pos_tup_list(editor)
                retval.append((editor, range_tup_list))
            return retval
        def EWH__callback_sci_UPDATEUI(args):
            for (editorX, pos_range_tuple_list) in EWH__getViewableEditorAndRangeTupleListList(True):
                # clear out any existing highlighting in areas the user can currently see
                for (start_pos, end_pos) in pos_range_tuple_list:
                    editorX.indicatorClearRange(start_pos, end_pos - start_pos)
                def eolws_hilite_regex_search_match_found_callback(m):
                    (span_start, span_end) = m.span()
                    editorX.indicatorFillRange(span_start, span_end - span_start)
                for (start_pos, end_pos) in pos_range_tuple_list:
                        0, #re.IGNORECASE,
        editor.callbackSync(EWH__callback_sci_UPDATEUI, [SCINTILLANOTIFICATION.UPDATEUI])  # install callback
        editor.setSelectionMode(editor.getSelectionMode())  # force manual UPDATEUI to happen

    The key area that makes this script different from the one in that other thread is this little segment:

    for (start_pos, end_pos) in pos_range_tuple_list:
            0, #re.IGNORECASE,

    Here you can see the regular expression \h+$ that matches trailing whitespace on a line.

  • Dear Scott Summer, I added your script to the startup.py and it is working perfectly. This is exactly the feature I want it, and now I got it. Thanks.

  • @dail

    Yo dail… According to this page: https://www.scintilla.org/ScintillaDoc.html#SCI_SETVIEWWS
    there is a visible only in indent command, which would only show these whitespace characters in the initial indentation area. and no where else.

    I am interested in doing that, I wrote the “SCWS_VISIBLEONLYININDENT” instead on your code above, but it didn’t work and syntax errored according to luascripts console.

    the error is right where I put this new syntax, so i don’t know if their documentation is wrong or what…

    and why are there two editor entries in there? Can you help me please? thx!

  • @SalviaSage

    I wrote the “SCWS_VISIBLEONLYININDENT” instead on your code above,

    This option is supported starting with Scintilla v3.6.2 and newer, however Notepad++ is using Scintilla v3.5.6…so this is due to Notepad++ using an old version of Scintilla…and nothing LuaScript can do about it.

    and why are there two editor entries in there?

    If you “move” or “clone” a document within Notepad++ you get a split view and can edit two files at once…each of these is an “editor” thus there is an editor1 and editor2 variable. The editor variable always references the currently active editor.

  • @dail said:

    This option is supported starting with Scintilla v3.6.2 and newer, however Notepad++ is using Scintilla v3.5.6…so this is due to Notepad++ using an old version of Scintilla…and nothing LuaScript can do about it.

    Thanks… I am crying a bucket right now :’( …

  • I found this code:

    editor.WhitespaceSize = 0

    basically, this hides the spaces indicator and not the tabs indicator.
    Since tabs are only found at indents (or at least are supposed to be) we can see this symbol on indents
    We can’t see the spaces symbol anywhere, but that’s okay. We will know it is spaces anyway, because if tab was used
    then it would show.

    Final result:

    satisfactory enough for me!

  • I wrote a plugin that can be used to display whitespace used for indentation normally but after the first visible character, it is shown as dots and arrows. Its name is ExtSettings. You can download it >>> here <<<. It will also be available soon via PluginsAdmin.

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