Is there a way to remove hard line breaks in a selected text?

[Koen]

Is there a plugin or anything that can remove hard line breaks, so that a text like:

I have sometimes
texts that I
copy and past into
my Obsidian

converts into:

I have sometimes texts that I copy and past into my Obsidian

[gino_m]

A little regex knowledge would help. Otherwise maybe the Linter plugin could be of assistance.
Someone should put up a Showcase/Share help sheet that deals with trailing whitespaces, line-ending hyphens, removal of line breaks/carriage returns.
I could do it, but it would involve too much explanation for newbies.
Install non-Obsidian apps like Notepad++, Obsidian plugins like Apply Patterns (which can execute dozens of rules in succession) and look up StackOverflow forum threads on the subject.
And by all means, learn a little regex and try them out on regex101.com.

E.g.:
Match → Replace (regex)
(-\n) → nothing
(\r\n)+|\r+|\n+|\t+ → space character

• See:
  regex101: build, test, and debug regex
  regex101: build, test, and debug regex

[CawlinTeffid]

The Text Format community plugin says it can (I haven’t tried it yet).

[gino_m]

I have it written up now:

Clean up pasted text from PDF's and other sources – Removing Hard Line Breaks

Removing Carriage Returns and Line Breaks A common problem when gathering information from PDFs and other sources is that when we paste our copied text into our apps and programs, we see that the lines don’t run out nicely to the end but are cut off. It is because we copied the line breaks in the process, in spite of ourselves, without knowing. A possible solution is trying to copy and paste differently: paste with or without formatting, as plain text; but that might not always be feasible. A…