Sourced from mvdan.cc/sh/v3's releases.

v3.12.0

• The mvdan-sh JS package is discontinued in favor of sh-syntax - #1145
• cmd/shfmt
  • Support the "simplify" and "minify" flags via EditorConfig - #819
  • --simplify and --minify are now formatting options, disabling the use of EditorConfig
  • Do not allow --write to replace non-regular files - #843
• interp
  • Add IsBuiltin to check if a command name is a shell built-in - #1164
  • Add HandlerContext.Builtin to allow ExecHandlerFunc to call built-ins
  • Initial support for $! and wait PID - #221
  • Return non-fatal ExecHandlerFunc errors via the Runner.Run API
  • Add HandlerContext.Pos to provide handlers with source positions
  • Deprecate NewExitStatus and IsExitStatus in favor of ExitStatus
  • Fix wait to always return the status of the last given job
  • Copy all env vars for background subshells to avoid data races
  • Support reading random numbers via $RANDOM and $SRANDOM
  • Set $BASH_REMATCH when matching regular expressions via =~
  • Support modifying local vars from the parent calling function
• expand
  • Adjust which backslash sequences are expanded in here-docs - #1138
  • Tweak tilde expansions to match Bash semantics
• pattern
  • Remove the flawed and broken Braces mode; use syntax.SplitBraces instead
  • Tweak ** to only act as "globstar" when alone as a path element - #1149
  • Tweak * and ** to not match leading dots in basenames
  • Add a NoGlobStar mode to match the POSIX semantics
• fileutil
  • Treat all non-regular files as definitely not shell scripts - #1089

Consider becoming a sponsor if you benefit from the work that went into this release!

Binaries built on go version go1.24.4 linux/amd64 with:

CGO_ENABLED=0 go build -trimpath -ldflags="-w -s -X=main.version=v3.12.0"

Sourced from mvdan.cc/sh/v3's changelog.

[3.12.0] - 2025-07-06

• The mvdan-sh JS package is discontinued in favor of sh-syntax - #1145
• cmd/shfmt
  • Support the "simplify" and "minify" flags via EditorConfig - #819
  • Do not allow --write to replace non-regular files - #843
• interp
  • Add IsBuiltin to check if a command name is a shell built-in - #1164
  • Add HandlerContext.Builtin to allow ExecHandlerFunc to call built-ins
  • Initial support for $! and wait PID - #221
  • Return non-fatal ExecHandlerFunc errors via the Runner.Run API
  • Add HandlerContext.Pos to provide handlers with source positions
  • Deprecate NewExitStatus and IsExitStatus in favor of ExitStatus
  • Fix wait to always return the status of the last given job
  • Copy all env vars for background subshells to avoid data races
  • Support reading random numbers via $RANDOM and $SRANDOM
  • Set $BASH_REMATCH when matching regular expressions via =~
  • Support modifying local vars from the parent calling function
• expand
  • Adjust which backslash sequences are expanded in here-docs - #1138
  • Tweak tilde expansions to match Bash semantics
• pattern
  • Remove the flawed and broken Braces mode; use syntax.SplitBraces instead
  • Tweak ** to only act as "globstar" when alone as a path element - #1149
  • Tweak * and ** to not match leading dots in basenames
  • Add a NoGlobStar mode to match the POSIX semantics
• fileutil
  • Treat all non-regular files as definitely not shell scripts - #1089

• 8202166 CHANGELOG: add entry for v3.12.0
• 27a4af8 README.md: add another example to caveats
• 4e01dd2 interp: add HandlerContext.Builtin
• 0797923 interp: add test cases with exit inside a process substitution
• dbf7b7c interp: add HandlerContext.Pos
• 0dc0b96 interp: swap math/rand for math/rand/v2
• 3beaa0f interp: add exitStatus.ok for code == 0 comparisons
• b6baa19 interp: move oneIf under exitStatus
• 46bb4f2 interp: export IsBuiltin
• 0bb228b interp: refactor builtins to return an exitStatus
• Additional commits viewable in compare view

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