How to find Regular Expression
lazarus / 9-Editor

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bpranoto · 2021-03-14 06:30

In the IDE, I want to find a regular expression.

1. Open the find dialog
2. Check Regular Expression
3. Uncheck Case Sensitive
4. Fill the Text to find: AsFloat *:=
5. Click Find Button

Unfortunately, an Error dialog popped up: TRegExpr exec: empty input
string

Did I miss something or i just found a bug?

Environment:
Lazarus 2.0.12
Ubuntu 18.04

Thanks.

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Jurassic Pork · 2021-03-14 08:12

hello,
can you show us, a line with what are you searching for ?
Friendly J.P

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bpranoto · 2021-03-14 08:17

Hi JP,

Something like:

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
Self.FQupdate.ParamByName('xxx').AsFloat := xxx; 
The problem is not what I want to find, but the IDE find facility.
Even when I put a simple text to find like 'a' it will throw the same
error message.

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MarkMLl · 2021-03-14 08:42

Looks like an erratic bug in recent versions up to and including
trunk. Works properly in 2.0.6, not sure about intervening versions.

MarkMLl

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Jurassic Pork · 2021-03-14 08:49

with  lazarus version 2.0.10    same bug. With the option Multiline
pattern no error but the result isn't good

[EDIT]  O.S : windows 10

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trev · 2021-03-14 08:52

Works in Lazarus trunk + FPC trunk on macOS.

[edit]

Works in Lazarus 2.0.6 and FPC 3.0.4.
Fails in Lazarus 2.0.10 and FPC 3.2.0.

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ASerge · 2021-03-14 09:12

Quote from: trev on March 14, 2021, 09:52:19 amWorks in Lazarus trunk
+ FPC trunk on macOS.
Works in Lazarus 2.0.6 and FPC 3.0.4.
Fails in Lazarus 2.0.10 and FPC 3.2.0.
In Windows the same: works in trunk 2.1.0, fails in 2.0.10.

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AlexTP · 2021-03-14 09:25

It is a known bug if FPC's regexpr unit. I already posted the fix, try
the more recent FPC 3.2 versions.

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bpranoto · 2021-03-14 11:29

All, thank you.

Glad it is already fix for the next fpc version. Just curious, does it
mean TRegExp suffer the same bug?

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AlexTP · 2021-03-14 11:51

TRegExp is another component, so it does not.