search-and-replace | simple search for find strings | Content Management System library

I had a baffling thing happen with search-and-replace in a .py file (using PyDev).

I copy-pasted some code from a PDF book and then found that this process had seemingly inserted a space at the start of all the lines. Getting rid of this space manually would have been irksome so I assumed that Find/Replace would work, with "Regular expressions" ticked:

Find: ^(\s*)(.*)$

Replace with: $2

... but it didn't: it behaved as though there was a reluctant quantifier, i.e. as though I had done this:

Find: ^(\s*?)(.*)$

... i.e. $2 in fact captured the entire line.

I'm using Thiago Mata's custom Google Sheets function to search and replace multiple words in a string.

Thiago's function is found here

Practically speaking, I'm using his function for replacing keywords with their corresponding hyperlinks.

The original strings are stored in column Examples!A:A. The "keyword-replacement html" pairs are stored in three other sheets: 'Verticals', 'Horizontals', and 'Technologies'.

For example, each instance of "Authors" found in the original string is replaced with

I have a string with multiple white spaces in the beginning, middle and end: " Humpty Dumpty sat ".

I used regular expression (https://stackoverflow.com/a/2932439/13136767) to remove the extra whitespaces and replace it with group 1 (which is an empty space).

I would like to replace all strings between > and <, that is, for example, replace center (from excerpt:> is the sun the center of the universe?:<) by foo, but do not replace center (from excerpt: <...center;">).

I am using the following command:

perl -pi -w -e 's/center/foo/g;' file.html

So I tried to use replace all "foo" between two HTML tags using REGEX (PHP code), getting like this:

perl -pi -w -e 's/(?])/foo/g;' file.html

but it doesn't work properly for what I want. I searched the web and what comes closest to what I need is Perl string replace: Match, but not replace, part of regex, Perl Regex - Search and replace between tags only if string is in-between and Replace text in string with exceptions. But I can't quite solve the need to just replace strings that are not

fragment_html_code:

I am a bit new to C and I have to modify a program that I've been given. It outputs a string, but I have to modify that string making sure that it properly escapes CSV special characters. I'd know how to do that with Python, because it's a simple search-and-replace kind of thing, but I'm struggling with the strings in C.

Here is what I got so far:

I am trying to find a pattern of two consecutive lines, where the first line is a fixed string and the second has a part substring I like to replace.

This is to be done in sh or bash on macOS.

If I had a regex tool at hand that would operate on the entire text, this would be easy for me. However, all I find is bash's simple text replacement - which doesn't work with regex, and sed, which is line oriented.

I suspect that I can use sed in a way where it first finds a matching first line, and only then looks to replace the following line if its pattern also matches, but I cannot figure this out.

Or are there other tools present on macOS that would let me do a regex-based search-and-replace over an entire file or a string? Maybe with Python (v2.7 and v3 is installed)?

Here's a sample text and how I like it modified:

This question was seeking a similar answer probably before stringr::str_replace_all had that option (or was well known). I'm copying the gist of my answer below, using str_replace_all.

I encountered a strange issue with unit tests in a namespaced package. Here's an example I built on GitHub. Here's the basic structure:

Background

As someone who develops multiple websites I wanted to be able to serve each site from within its respective project folder in the filesystem, instead of serving them all under the htdocs directory.

So I moved my wordpress folder (whose site was usually accessed via localhost/wordpress) to my project directory, and followed the instructions in this answer to set up a virtual host with a DocumentRoot and Directory that matches the new location of the wordpress folder. This is the whole (uncommented portion) of my httpd-vhosts.conf: