long column names go past width
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 62/100
Research direction
Start by reproducing the options(width=20) data.table examples in the issue and trace the package's printing and column-width handling. Done means long column names are abbreviated within the configured width in both normal output and datatable.print.trunc.cols=TRUE output, without regressing existing truncation behavior.
Written by the indexing model from the issue text.
Description
Related to #7788 which implemented this abbreviation:
> options(width=20);data.table(x="abcdefghijklmnopqrstuvwxyz")
x
<char>
1: abcdefghijklmn...
long column names can still go over width:
> options(width=20);data.table(abcdefghijklmnopqrstuvwxyz=1)
abcdefghijklmnopqrstuvwxyz
<num>
1: 1
> options(width=20, datatable.print.trunc.cols=TRUE);data.table(abcdefghijklmnopqrstuvwxyz=1)
1 variable not shown: [abcdefghijklmnopqrstuvwxyz <num>]
I would expect some output like:
> options(width=20);data.table(abcdefghijklmnopqrstuvwxyz=1)
abcdefghijklmnop…
<num>
1: 1
> options(width=20, datatable.print.trunc.cols=TRUE);data.table(abcdefghijklmnopqrstuvwxyz=1)
1 variable not shown:
abcdefghijklm… <num>
in comparison, others go over width too
> options(width=20);data.frame(x="abcdefghijklmnopqrstuvwxyz")
x
1 abcdefghijklmnopqrstuvwxyz
> options(width=20);data.frame(abcdefghijklmnopqrstuvwxyz=1)
abcdefghijklmnopqrstuvwxyz
1 1
> options(width=20);tibble::tibble(abcdefghijklmnopqrstuvwxyz=1)
# A tibble: 1 × 1
# ℹ 1 more
# variable:
# abcdefghijklmnopqrstuvwxyz <dbl>
> options(width=80);tibble::tibble(abcdefghijklmnopqrstuvwxyz=1)
# A tibble: 1 × 1
abcdefghijklmnopqrstuvwxyz
<dbl>
1 1
>
this is not high priority because long column names are not frequent.
- Dominant language
- R
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- Merged PRs (30d)
- 4
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
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- Open a pull request that references the issue number.
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