Calc Crash on Second RegEx Matches Access (VB Macro)

[NOYB]

REM  *****  BASIC  *****

' Crashes on second access of regex matches (line 19) without VBA support option.

Private Function RegEx_Matches_Calc_Crash()

    Dim regEx As Object
    Set regEx = CreateObject("VBScript.RegExp")
    regEx.Global = True
    regEx.IgnoreCase = True

	html = "<span>10:35 AM EDT</span>"

    regEx.Pattern = "<span>([0-9]{2}):([0-9]{2}) (AM|PM) (EST|EDT)</span>"
    Set Matches = regEx.Execute(html)

    If Matches.Count > 0 Then
        TimeHour = Matches.Item(0).SubMatches.Item(0)
        TimeHour = Matches.Item(0).SubMatches.Item(0)
        TimeMinute = Matches.Item(0).SubMatches.Item(1)
        TimeAMPM = Matches.Item(0).SubMatches.Item(2)
        TimeTZ = Matches.Item(0).SubMatches.Item(3)
    End If

End Function


' Version: 7.6.6.3 (X86_64) / LibreOffice Community
' Build ID: d97b2716a9a4a2ce1391dee1765565ea469b0ae7
' CPU threads: 8; OS: Windows 10.0 Build 22631; UI render: Skia/Raster; VCL: win
' Locale: en-US (en_US); UI: en-US
' Calc: threaded

[mikekaganski]

Please post here the bug number.

[JohnSUN]

Excuse me, but why CreateObject("VBScript.RegExp") and not CreateUnoService("com.sun.star.util.TextSearch")?

[NOYB]

Bug 160770 - Crashes on second access of regex matches without VBA support option

[NOYB]

@JohnSUN
That is what is in the code.
What are the pro/cons between them?

[JohnSUN]

@NOYB

What are the pro/cons between them?

Well, for example, the .TextSearch works without failures or crashes. And it also works on any operating system.

[karolus]

… python would also work on any OS

import re

html = "<span>10:35 AM EDT</span>"

rex = re.compile("<span>([0-9]{2}):([0-9]{2}) (AM|PM) (EST|EDT)</span>")
timestamp = rex.search(html)
hour, minute, A_P, zone = timestamp.groups()

https://docs.python.org/3/library/re.html#module-re

[Lupp]

Python comes with a default RegEx module (“re”) and there seems to be also an extended module.
The implementations and the features will differ in “flavor” from the RegEx engine by ICU wich is used in LibreOffice for F&R, for the TextSearch service, and for the REGEX() function.
Working with two or more different implementations within a single application could cause confusion.