Leading comment after an opening delimiter is hoisted out of its group #171

Upstream: google/google-java-format#1501
Kind: bug | Priority: low

google-java-format#1501 (merged 2026-10-29, copybara export; groundwork in google-java-format#1500 and baseline tests in google-java-format#1502) fixes comments placed right after an opening token being pulled out of the indented group, leaving the comment and the next line unindented. Cases covered: assert with a detail message, the semicolon after enum constants, for initializers, multi-resource try headers, multi-catch clauses and explicit type argument lists. After the fix such comments stay indented inside the group, for example in a for ( header the comment, int i = 0;, the condition and the update each get their own continuation-indented line.

Why it matters: it is a correctness-of-layout bug class around comments that our engine may share, since both derive from the same original visitor design.

Affected files in our repo:

• open-java-format/src/main/java/com/palantir/javaformat/java/JavaInputAstVisitor.java
• open-java-format/src/main/java/com/palantir/javaformat/doc (comment handling in the layout builder)

Suggested action: investigate. Put a comment after for ( and after try ( into our formatter and compare the indentation. Examples: not available - the pre-change output is only in the baseline test PR and I did not run our formatter.

Filed from an upstream-watch ticket after manual review.