“Find and Replace” is a huge time saver but sometimes you need something more flexible than replace ‘x’ with ‘y’.

This is where Regular Expressions come in handy.

This article explains how to use wildcards and other advanced features that give super powers to the humble “Find and Replace” modal.

This article uses a free program called Notepad++.  If you don’t have it, you can download it here.

More articles you might also be interested in…

How to Wrap paragraphs with Find/Replace

Consider this example…

Say you have a document formatted like the image above. Imagine you needed to wrap each paragraph in <p> tags. A normal “Find and Replace” can’t do that, but it’s possible with “Regular Expressions”.

Here’s how to do it in Notepad++

  1. Find and Replace

    In Notepad++ press Ctr+H to open the “Find and Replace” window.

  2. Click “Regular Expression” option

    Under Search Mode: choose “Regular expression” and then check the “matches newline” checkbox.

  3. Add <p> tag to beginning of each line

    Find what: \n..
    Replace with: \n \n<p>

  4. Notice Added <p> tag

    You should see <p> tags at the beginning of each line

  5. Add Closing </p> tag

    Find what: \n \n
    Replace with: </p> \n \n

  6. Notice Closing </p> tags

    You should see closing </p> tags at the end of each line.

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 So what’s happening here? 
\n‘ looks for a line break. 
.‘ is a wildcard that matches any single character.
So ‘\n..‘ looks for a line break followed by two characters of text.

In other words, we’re saying “find a new line with content”, (not a blank line) then replace it with 2 new lines and a “<p>” tag.

To close the paragraphs, we’re saying “find 2 line breaks in a row” (because we just made sure to add to breaks in between each paragraph) and replace it with a closing </p>”.

Cheat Sheet

Here’s a list of useful expressions you may want to use in your find and replace escapades…

line break
A digit in the 0-9 range (a number)
Not a digit. Anything that’s not a number (including spaces).
A lowercase letter.
NOTE: this will fall back on “a word character” if the “Match case” search option is off.
Not a lower case letter. See note above.
An uppercase letter.
Not an uppercase letter.
A word character, which is a letter, digit or underscore. This appears not to depend on what the Scintilla component considers as word characters. Same as [[:word:]].
Not a word character.
A spacing character: space, EOLs and tabs count.
Not a space.
Horizontal spacing. This only matches space, tab and line feed.
Not horizontal whitespace.
Vertical whitespace.
Not vertical whitespace
Only applies to characters at the end of a line. (ex. ‘!$’ would replace all exclamation points at the end of a line.)
Only applies to characters at the beginning of a line (ex. ‘^<p>’ would replace any ‘<p>’ at the beginning of a line.)

Replace Multiple Spaces with Tab

Want another useful tip?

Let’s say you have code that was indented with lots of spaces. Replacing all those spaces with tabs, would make the code much cleaner.

Let’s say you want to replace every 4 spaces with 1 tab.

  1. In the Find what field type: ([ ]{4})

2. In the Replace with field type: \t

Don’t forget to have the Regular Expression radio button selected (just like before).

If you need a different number of spaces, just change the number. For example if you want to replace 6 spaces use the following: ([ ]{6})

Credit: I found this tip at https://datacadamia.com/ide/notepad/replace.

Bonus Tip!
Alternative Online Tools That Make Text Conversion Easier

Sometimes expressions can be a little hard to figure out.  If you’re looking for some simple online tools, you might try diffchecker.comtitlecase.com, and textmechanic.com.

I’ll talk about each…

Check for differences between 2 sets of text

The other day, I wanted to check for differences between 2 websites.  I had a WordPress theme that I knew I’d made some changes to, but I couldn’t remember exactly what they were.

I found a useful website called https://www.diffchecker.com that let me copy and paste the code for the two sites and highlighted the differences for me.

Easily spot differences in two sets of text.
DiffChecker.com quickly identified the changes I’d made between documents.

Changing All Caps to Title Case

I frequently get text from clients in ALL CAPS, and I often want to change it to Title Case or sentence case without having to retype it.

TitleCase.com will convert your text to Title Case, UPPERCASE, lowercase, or Sentence case. It will even do programming specific conversions like camelCase, PascalCase, hyphen-case, or snake_case. Pretty useful!

Miscellaneous Text Editing Tools with Text Mechanic

Textmechanic.com has a variety of bulk text editing tools.

Here’s a few of the tools they have…

Let Us Know Your Thoughts

As I was reviewing my analytics, I noticed this article has become quite popular, but strangely has far fewer comments than our other popular articles. I realized that might be because there was no invitation to comment. So I’ve decided to fix that.

Was this article useful?

Do you have any useful tricks for Advanced Find & Replace functionality?

Let us know in the comments below…


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