Basic use of Regex, for a beginner

[iron_sigil]

Hello there, this is my first post. I'm writing from Italy and here is my problem with Sigil x Windows (a good app anyway).
Is there anyone of help to solve this issue?
When I copy into Sigil some text (from Wikipedia for example) there are notes such as [1], [2] etc. Then I try to eliminate them fully with the function regex but the square brackets won't go away. I've tried different options but couldn't find the right way. For example I've typed [0-9]+ and only the numbers are deleted then I have to go to normal search/replace and I can delete first the close square bracket ] and then the open one[.
Can anyone Thanks a million!
Franco

[jackie_w]

Try Search:

\[\d+\]

or, if you prefer

\[[0-9]+\]

Square brackets are special characters in Regex so they need to be 'escaped' by prefixing them with a backslash character

[iron_sigil]

Originally Posted by jackie_w

Try Search:

\[\d+\]

or, if you prefer

\[[0-9]+\]

Square brackets are special characters in Regex so they need to be 'escaped' by prefixing them with a backslash character

Oh, it works!! Thanks a lot, Jackie. I did not know about the 'escapism' to apply. Very smart.
One more thing and I hope the last one:
which code do I have to use to eliminate for example [a], [b], [c], etc always inside square brackets?
Thanks in advance
Franco

[Tex2002ans]

Originally Posted by iron_sigil

which code do I have to use to eliminate for example [a], [b], [c], etc always inside square brackets?

Search: \[[a-z]\]

The Blue section tells Regex to "look for single lowercase a through z".

Note: [] are special characters in Regex to tell it "look for these specific characters in this position".

Red parts say "look for a left bracket" + "look for a right bracket".

Note: Because [] are special characters, you have to use the \ before them in order to find the ACTUAL bracket characters in your text.

Note 2: Other special characters in Regex are ?+.{}\.