regex documentation?

[a2457123]

In a previous post (viewtopic.php?p=24735#p24735) about regex filtering, there was the phrase

use standard regex

...

Which regex "standard" is used within MMEX? For example:

• perl
  python
  BASH
  vi
  sed
  awk
  JavaScript

each have similar -- but different -- regular expression syntax.

Short of reading the source code, is there documentation on regular expressions in MMEX?

[mikhailo2608ilaol]

Look at https://github.com/moneymanagerex/money ... ssues/4618

[a2457123]

Look at https://github.com/moneymanagerex/money ... ssues/4618

Thanks.

Those are helpful examples, but that's not the same as the syntax definition.

For example, some of the things that are not present in that github page include:

• documentation of "?" within the regular expressions (does it match any single character...if so, how does that differ in syntax from ".", or is the "?" only used in a sequence of "?!" to negate a match)

• are there other predefined character classes, such as "\s" to match white space, "\S" to match non-whitespace, "\D" to match non-numeric characters

• are regular expressions in MMEX case-sensitive or insensitive, and if case-sensitive, are there operators to make a regular expression insensitive

• are there operators to match a sequence, for example {0..5} or [0-5] to match the numbers 0 through 5 (inclusive)

• is there an operator to anchor the regular expression to the end of the string (typically "$")

• do MMEX regular expressions distinguish between different forms of whitespace (space, tab, newline) within a string

• is there an operator to specify the number of matches, for example a regular expression like \d{4-8}\.\d{2} to match numbers with 4 to 8 digits before the decimal point and exactly 2 digits after

• how can regular expression operators be used a string literals within a regular expression...for example, to match the literal character "."

[guangong]

hi @a2457123 ,

in short, it is built on top of PCRE library (https://www.pcre.org/).

it would be found here https://docs.wxwidgets.org/3.2.5/classwx_reg_ex.html