go/src/errors, branch makepkg

errors: add a test verifying join does not flatten errors

2025-12-23T18:45:53Z

For #76961 Change-Id: Ib81f3202074bf83a5b204b32706445f051f837a8 Reviewed-on: https://go-review.googlesource.com/c/go/+/732360 Auto-Submit: Damien Neil LUCI-TryBot-Result: Go LUCI Reviewed-by: Sean Liao Reviewed-by: Michael Knyszek

Revert "errors: optimize errors.Join for single unwrappable errors"

2025-12-23T18:03:09Z

This reverts CL 635115. Reason for revert: The new behavior does not match the function documentation. Fixes #76961 Change-Id: If2450aa4efba28c7a12887a5b306c231a836e740 Reviewed-on: https://go-review.googlesource.com/c/go/+/731981 Reviewed-by: Dmitri Shuralyov Reviewed-by: Dmitri Shuralyov Auto-Submit: Damien Neil LUCI-TryBot-Result: Go LUCI

errors: add examples for custom Is/As matching

2025-11-21T20:40:11Z

Change-Id: Ia92dae13b6a4e9434b29d2ab3f698f6ba87b4b89 Reviewed-on: https://go-review.googlesource.com/c/go/+/713740 Reviewed-by: Damien Neil Reviewed-by: Mark Freeman LUCI-TryBot-Result: Go LUCI Auto-Submit: Damien Neil

errors: document that the target of Is must be comparable

2025-10-28T15:30:47Z

If target is not comparable, then errors.Is(err, target) can panic. (Put another way, if target == target panics, then Is can panic.) Document that the target must be comparable. For #74488 Change-Id: I694dc4c91a608b80f044f06dd1c6ac32b8e77c9c Reviewed-on: https://go-review.googlesource.com/c/go/+/715440 Reviewed-by: Alan Donovan Auto-Submit: Damien Neil TryBot-Bypass: Damien Neil

errors: add AsType

2025-09-30T17:22:08Z

Fixes #51945 Change-Id: Icda169782e796578eba728938134a85b5827d3b6 GitHub-Last-Rev: c6ff335ee1ffb6b7975141795a4632a55247299d GitHub-Pull-Request: golang/go#75621 Reviewed-on: https://go-review.googlesource.com/c/go/+/707235 Reviewed-by: Carlos Amedee Reviewed-by: Damien Neil LUCI-TryBot-Result: Go LUCI Reviewed-by: Sean Liao

errors: mention Is/As in Join docs

2025-08-20T19:04:15Z

Fixes #74461 Change-Id: Ic1b1b2b43d59dd67f31c2388ca88650ee847ba93 Reviewed-on: https://go-review.googlesource.com/c/go/+/696737 Reviewed-by: David Chase LUCI-TryBot-Result: Go LUCI Reviewed-by: Carlos Amedee Reviewed-by: Jorropo

errors: omit redundant nil check in type assertion for Join

2025-07-28T18:28:38Z

When ok is true, err can't be nil. Make it behave more like the Unwrap function. Change-Id: Ieba5de57d60f5ff4d6a3468d703e6f72be02a97d GitHub-Last-Rev: 6df9365a1d586bba64df57be11f9ca7b772cc773 GitHub-Pull-Request: golang/go#74764 Reviewed-on: https://go-review.googlesource.com/c/go/+/689920 LUCI-TryBot-Result: Go LUCI Auto-Submit: Jorropo Reviewed-by: Keith Randall Reviewed-by: Mark Freeman Reviewed-by: Jorropo

errors: add joinError Unwrap example

2025-05-27T15:37:09Z

Change-Id: Id7489247e9bdd413f82fdf5a70197856c47abfb5 Reviewed-on: https://go-review.googlesource.com/c/go/+/674336 Reviewed-by: Michael Knyszek Reviewed-by: Sean Liao LUCI-TryBot-Result: Go LUCI Reviewed-by: David Chase Auto-Submit: Sean Liao

errors: optimize errors.Join for single unwrappable errors

2025-04-14T13:49:08Z

Change-Id: I10bbb782ca7234cda8c82353f2255eec5be588c9 GitHub-Last-Rev: e5ad8fdb802e56bb36c41b4982ed27c1e0809af8 GitHub-Pull-Request: golang/go#70770 Reviewed-on: https://go-review.googlesource.com/c/go/+/635115 Auto-Submit: Sean Liao Reviewed-by: Michael Pratt Reviewed-by: Sean Liao Reviewed-by: Dmitri Shuralyov LUCI-TryBot-Result: Go LUCI

errors: reference Go 1.13 article about errors

2024-09-30T17:37:38Z

This commit amends package errors' documentation to include a reference to the https://go.dev/blog/go1.13-errors blog article. The motivation is multi-fold, but chiefly the article includes good information about error philosophy (e.g., when to wrap), and developers who have come to Go in the intervening five years are likely not have seen this article at all given the nature of blog publishing and post fanfare. The material deserves a promotion in visibility. Change-Id: Ia6f8307784521dd59de3a3d638dbc0a7fcd445e6 GitHub-Last-Rev: 20980dd5070cde495ebb08386ae7b4cd78ccc612 GitHub-Pull-Request: golang/go#69698 Reviewed-on: https://go-review.googlesource.com/c/go/+/616341 Reviewed-by: Jonathan Amsterdam Reviewed-by: Damien Neil LUCI-TryBot-Result: Go LUCI Reviewed-by: Michael Knyszek