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FS regex [^,]* fails on empty field #190

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benhoyt opened this issue Jun 13, 2023 · 0 comments · Fixed by #214
Closed

FS regex [^,]* fails on empty field #190

benhoyt opened this issue Jun 13, 2023 · 0 comments · Fixed by #214

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@benhoyt
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benhoyt commented Jun 13, 2023

For example:

$ echo 'x,,z' | goawk -F'[^,]*' '{for (i=1;i<=NF;i++) print i, "<"$i">"}'
1 <>
2 <,>
3 <,>
4 <>

# Should be (and other AWKs print):
$ echo 'x,,z' | gawk -F'[^,]*' '{for (i=1;i<=NF;i++) print i, "<"$i">"}'
1 <>
2 <,,>
3 <>

See https://www.austingroupbugs.net/view.php?id=1468 (0001468).

Thanks @raygard for the report.
fioriandrea added a commit to fioriandrea/goawk that referenced this issue Oct 9, 2023
@fioriandrea
Fix benhoyt#190: FS regex [^,]* fails on empty field
ed05f55 
A custom split function has been introduced. This split function skips
empty matches. It is used only for FS
@fioriandrea fioriandrea mentioned this issue Oct 9, 2023
Merged
fioriandrea added a commit to fioriandrea/goawk that referenced this issue Oct 10, 2023
@fioriandrea
add tests to check that field separator cannot match empty field
5dc4647 
See benhoyt#190 for details
benhoyt pushed a commit that referenced this issue Oct 16, 2023
@fioriandrea
Fix #190: FS regex [^,]* fails on empty field (#214)
d4cd0af 
A custom split function has been introduced. This split function skips
empty matches. It is used only for FS.

See #190 for details
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Fix #190: FS regex [^,]* fails on empty field fioriandrea/goawk
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