# Regular expression examples
. | Matches all characters
+ | Matches the previous expression one or more times
* | Matches the previous expression zero or more times
\ | Escapes special characters
\Q...\E | Matches the characters between `\Q` and `\E` literally, suppressing the meaning of special characters.
[a-c] | Matches a, b and c
\d | Matches all digits
\w | Matches all word characters
\s | Matches all whitespace characters
^ | Matches the start of a line
$ | Matches the end of a line
$1..$9 | groups are referenced in the replace expression by `$i` for the i-th group
${count08} | replaced with numbers starting from 1, incrementing by 1. The numbers after "count" are optional and indicate how many leading spaces the output should use, or if the number is preceded by a zero how many leading zeros.
${count08(start)} | same as `${count}`, but with "start" as the start value for counting
${count08(start, increment)} | same as `${count(start)}`, but with "increment" as the increment value instead of the default 1
${filepath} | replaced with the path of the currently searched file
${filename} | replaced with the name of the currently searched file. The name does not include the file extension
${fileext} | replaced with the path of the currently searched file