[Libreoffice-bugs] [Bug 113977] New: Implement REGEXEXTRACT function

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=113977

            Bug ID: 113977
           Summary: Implement REGEXEXTRACT function
           Product: LibreOffice
           Version: 5.4.3.2 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: ddascalescu+freedesktop at gmail.com

Description:
Extracting a substring from a string is a royal pain with the existing text
function. It has to be done using a combination of MID(), LEFT() and awkward
repetitive arithmetic.

Steps to Reproduce:
https://help.libreoffice.org/Calc/Text_Functions only lists functions that
return the start of a found string, or that extract strings based on an offset
and number of characters (the latter causing the repetitive arithmetic I
mentioned. Here's my best attempt to extract a currency value for JPY:

A1: EUR:1.2,JPY:0.02,AUD:0.9,...
A2: =SEARCH("(?<=JPY:)\d", A1)  // ← value starts
A3: =FIND(",", A7, SEARCH("(?<=JPY:)\d", A1))  // ← value ends right before
that
A4: =MID(A1, SEARCH("(?<=JPY:)\d", A1), FIND(",", A1, SEARCH("(?<=JPY:)\d",
A1)) - SEARCH("(?<=JPY:)\d", A1))  // standalone formula #facepalm

Actual Results:  
Horrible formulas

Expected Results:
Per the documentation at https://support.google.com/docs/answer/3098244?hl=en,
REGEXEXTRACT would be far, far simpler:

=REGEXEXTRACT(A1, "(?<=JPY:)[^,]+")


Reproducible: Always


User Profile Reset: No



Additional Info:
A user cares a lot more about the actual substring they want to extract, than
about its offset and length within the original string.


User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like
Gecko) Chrome/62.0.3202.89 Safari/537.36

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