fread fail on balanced embedded quotes (found in comments of tests.Rraw)
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 38/100
- Issue type
- Bug
- Clarity
- Clearly specified
- Activity status
- Stale
- Tech stack
- r
- Domain
- data-engineering
Research direction
Start with the reproducer and the referenced section of inst/tests/tests.Rraw around lines 5133-5137, then trace how fread handles embedded and balanced quotes. Done means the supplied input is parsed without the column-count warning and its expected fields are preserved, with regression coverage in that test area.
Written by the indexing model from the issue text.
Description
Found here
I expected this to work given the work on weird field parsing of late, but it doesn't yet:
fread('http,size\n"www.blah?x="one",y="two","three"",123\n')
# http size V3 V4
# 1: www.blah?x="one y="two" three" 123
Warning message:
In fread("http,size\n"www.blah?x="one",y="two","three"",123\n") :
Detected 2 column names but the data has 4 columns (i.e. an invalid file format). Added 2 extra default column names at the end.
- Dominant language
- R
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- Merged PRs (30d)
- 4
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