How to remove text between word and symbol using Notepad++?



  • I have lines in my document that go

    Source: Example Book's Louie p. 165</text><weight>45.0
    Source: Example Magazine(s Martin p. 120</text><weight>30.0
    Source: Example Droid's Paul p. 165</text><weight>20.0

    Source: always stays the same. and </text> does as well. The letters and numbers between do change.

    I’d like to delete the word Source: up to this (<) symbol.

    So like this:
    Source: Example Book's Guide p. 165</text><weight>45.0

    Source: Example Book's Guide p. 165</text><weight>45.0

    to this:
    </text><weight>45.0

    I’m not very proficient in notepad++, but this is as close as I got.
    (?s-i)^Source: .+?\R</text>.+?$\R
    Although it seems to be selecting everything this way.

    Is it possible to do this? I hope I explained it well enough…



  • @Martin-Zanolli :

    Thanks for showing what you tried. That helps.

    The regex you chose selected nothing (rather than everything) for me. That’s because the data as posted does not have a newline sequence before the </text>, which your \R</text> requires.

    You don’t actually need any of the stuff to the right of the </text>, because you appear to be leaving that alone.

    There are many ways to do what you want: you could use fancy lookahead sequences, or you could capture the </text> into a numbered or named group. But the easiest to explain is:

    • FIND = (?s-i)^Source: .+?</text>
      • => match case, dot matches newline, match beginning of line, Source:, then at least one character up to the first </text> encountered
    • REPLACE = </text>
    • MODE = regular expression
    Source: Example Book's Louie p. 165</text><weight>45.0
    Source: Example Magazine(s Martin p. 120</text><weight>30.0
    Source: Example Droid's Paul p. 165</text><weight>20.0
    

    becomes

    </text><weight>45.0
    </text><weight>30.0
    </text><weight>20.0
    

    The same regex will work if there is a newline, like:

    Source: Example Book's Louie p. 165
    </text><weight>45.0
    Source: Example Magazine(s Martin p. 120
    </text><weight>30.0
    Source: Example Droid's Paul p. 165
    </text><weight>20.0
    

    … because the .+? includes newlines thanks to (?s-i)

    If that’s not the results you wanted, or not the data you had, please read the advice below, and reply appropriately

    -----

    Please Read And Understand This

    FYI: I often add this to my response in regex threads, unless I am sure the original poster has seen it before. Here is some helpful information for finding out more about regular expressions, and for formatting posts in this forum (especially quoting data) so that we can fully understand what you’re trying to ask:

    This forum is formatted using Markdown. Fortunately, it has a formatting toolbar above the edit window, and a preview window to the right; make use of those. The </> button formats text as “code”, so that the text you format with that button will come through literally ; use that formatting for example text that you want to make sure comes through literally, no matter what characters you use in the text (otherwise, the forum might interpret your example text as Markdown, with unexpected-for-you results, giving us a bad indication of what your data really is).

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    If you have further search-and-replace (“matching”, “marking”, “bookmarking”, regular expression, “regex”) needs, study the official Notepad++ searching using regular-expressions docs, as well as this forum’s FAQ and the documentation it points to. Before asking a new regex question, understand that for future requests, many of us will expect you to show what data you have (exactly), what data you want (exactly), what regex you already tried (to show that you’re showing effort), why you thought that regex would work (to prove it wasn’t just something randomly typed), and what data you’re getting with an explanation of why that result is wrong. When you show that effort, you’ll see us bend over backward to get things working for you. If you need help formatting, see the paragraph above.

    Please note that for all regex and related queries, it is best if you are explicit about what needs to match, and what shouldn’t match, and have multiple examples of both in your example dataset. Often, what shouldn’t match helps define the regular expression as much or more than what should match.

    Here is the way I usually break down trying to figure out a regex (whether it’s for myself or for helping someone in the forum):

    1. Compare what portions of each line I want to match is identical to every other one (“constants”), and what parts do I want to allow to be different in each line (“variables”) but still be part of the match.
    1. Look at both the variables and constants, and see what portions of each I’ll want to keep or move around, vs which parts get thrown away completely. Each sub-component that I want to keep will be put in a regex group. Anything that gets completely thrown away doesn’t need to be in a group, though sometimes I put it in a numbered (___) or unnumbered (?:___) group anyway, if I have a good reason for it. Anything that needs to be split apart, I break into multiple groups, instead of having it as one group.
    1. For each group, I do a mental “how would I describe to my son how to correctly match these characters?” – which should hopefully give me a simple, foolproof algorithm of characters that must match or must not match; then I ask, “how would I translate those instructions into regex sequences?” If I don’t know the answer to the second, I read documentation, or ask a specific question.
    1. try it, debug, iterate.

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