Insert space after period using sed

Question

I\'ve got a bunch of files that have sentences ending like this: \\@.Next sentence. I\'d like to insert a space after the period.

Not all occurrences of

Answer 1

The right command should be this:

sed -i.bak -E "s/\\\@.(\S)/\\\@. \1/g" *.tex

Whith it, you match any \@ followed by non whitespace (\S) and insert a whitespace (what is made by replacing the whole match with '\@ ' plus the the non whitespace just found).

Answer 2

I think the following would be correct:

s/\\@\.[^\s]/\\@. /g

Only replace the expression if it is not followed by a space.

Answer 3

Use this sed command:

sed -i.bak -E 's/(\\@\.)([A-Z])/\1 \2/g' *.tex

OR better:

sed -i.bak -E 's/(\\@\.)([^ \t])/\1 \2/g' *.tex

which will insert space if \@. is not followed by any white-space character (not just capital letter).

Answer 4

This might work for you:

sed -i .bak -E 's/\\@\. \?/\\@. /g' *.tex

Explanation:

If there's a space there replace it with a space, otherwise insert a space.