urfave/cli v1.19.0 Release Notes

Release Date: 2016-11-19 // over 5 years ago
  • ➕ Added

    • FlagsByName was added to make it easy to sort flags (e.g. sort.Sort(cli.FlagsByName(app.Flags)))
    • A Description field was added to App for a more detailed description of
      the application (similar to the existing Description field on Command)
    • Flag type code generation via go generate
    • Write to stderr and exit 1 if action returns non-nil error
    • ➕ Added support for TOML to the altsrc loader
    • SkipArgReorder was added to allow users to skip the argument reordering.
      This is useful if you want to consider all "flags" after an argument as
      0️⃣ arguments rather than flags (the default behavior of the stdlib flag
      library). This is backported functionality from the removal of the flag
      🚀 reordering
      in the unreleased version
      2
    • For formatted errors (those implementing ErrorFormatter), the errors will
      be formatted during output. Compatible with pkg/errors.

    🔄 Changed

    • ✅ Raise minimum tested/supported Go version to 1.2+

    🛠 Fixed

    • Consider empty environment variables as set (previously environment variables
      with the equivalent of "" would be skipped rather than their value used).
    • 📜 Return an error if the value in a given environment variable cannot be parsed
      as the flag type. Previously these errors were silently swallowed.
    • 🖨 Print full error when an invalid flag is specified (which includes the invalid flag)
    • 0️⃣ App.Writer defaults to stdout when nil
    • 🖨 If no action is specified on a command or app, the help is now printed instead of panicing
    • 📇 App.Metadata is initialized automatically now (previously was nil unless initialized)
    • Correctly show help message if -h is provided to a subcommand
    • context.(Global)IsSet now respects environment variables. Previously it
      would return false if a flag was specified in the environment rather than
      as an argument
    • ✂ Removed deprecation warnings to STDERR to avoid them leaking to the end-user
    • ⚡️ altsrcs import paths were updated to use gopkg.in/urfave/cli.v1. This
      🛠 fixes issues that occurred when gopkg.in/urfave/cli.v1 was imported as well
      as altsrc where Go would complain that the types didn't match