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JuliaLang / julia / 1470
77%

Build:
DEFAULT BRANCH: master
Ran 13 Mar 2026 11:39AM UTC
Jobs 3
Files 350
Run time 1min
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13 Mar 2026 05:10AM UTC coverage: 76.903% (+0.06%) from 76.844%
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JuliaSyntax: parse `typegroup` as identifier on older Julia versions (#61304)

On Julia versions < 1.14, `typegroup` is treated as an ordinary
identifier rather than a reserved keyword. This fixes parsing of code
like `let typegroup = 3 end` when targeting older versions.

We had not previously defined our syntax evolution policies for addition
for new keywords. My proposal, implemented in this PR is as follows:

- Where the old syntax parsed, keep providing the same parse result
- Where the new syntax would be a syntax error in the old syntax
version, attempt to parse as the new syntax (and then wrap it in the
version error). This provides better error messages and error recovery
when attempting to use new syntax in an old syntax version.

Implements post-commit review from
https://github.com/JuliaLang/julia/pull/60569#discussion_r2925201976

Co-authored-by: Keno Fischer <Keno@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

63673 of 82797 relevant lines covered (76.9%)

23332010.91 hits per line

Uncovered Existing Lines

Lines Coverage ∆ File
1
85.6
-0.26% base/essentials.jl
1
92.64
-0.43% stdlib/Random/src/generation.jl
4
72.19
-0.79% base/reflection.jl
18
70.76
-0.87% base/show.jl
37
68.59
-4.65% base/errorshow.jl
Jobs
ID Job ID Ran Files Coverage
1470 macos-coverage - 1470 13 Mar 2026 11:39AM UTC 350
75.53
1470 linux-coverage - 1470 13 Mar 2026 02:56PM UTC 342
73.97
1470 windows-coverage - 1470 13 Mar 2026 03:45PM UTC 317
74.82
Source Files on build 1470
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  • Changed 40
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  • Coverage Changed 40
Coverage ∆ File Lines Relevant Covered Missed Hits/Line
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