Implementation notes for RFC #3816

Nice to haves in the CLI:

• Display current log level - actually removed through [cli] Display pmd banner, version improvement, logging #4843
• Display PMD version
• Log command-line arguments
• Log classpath (also, avoid printing entire classpath in 'cannot resolve resource' error)
• Colors for errors when in a terminal, also a way to disable them
• [core] Progress reporting #3828

Implementation

• Use MessageReporter in more places, eg RuleApplicator
• Make the MessageReporter configurable (done in [core] Abort on semantic errors #3892)
• Make a MessageReporter implementation that doesn't depend on SLF4J, use that for the CLI
• Cleanup the API of MessageReporter, the implicit use of MessageFormat everywhere is confusing...
• [core] Better error reporting for the ruleset parser #3922
• Use MessageReporter to report CLI errors:

  pmd/pmd-cli/src/main/java/net/sourceforge/pmd/cli/internal/PmdRootLogger.java

  Line 67 in 642716f

  // TODO CLI errors should also be reported through this