Command line execution blocks indefinitely when using System.in due toStreamFeeder performing blockingread() operations. This applies the same fix as maven-shared-utilsMSHARED-1072.

Changes

• NewStreamPollFeeder class: PollsInputStream.available() before reading, with 100ms wait intervals when no data is available
• CommandLineUtils updated: UsesStreamPollFeeder instead ofStreamFeeder for feeding system input to process output streams
• StreamFeeder deprecated: Kept for backward compatibility with clear migration path

Technical approach

The blocking behavior occurs becauseStreamFeeder.read() waits indefinitely for input:

// Old: blocks forever on System.inintdata =input.read();

New approach polls for available data:

// New: non-blocking poll with timeoutif (input.available() >0) {inti =input.read(buf);output.write(buf,0,i);output.flush();}else {lock.wait(100);// Poll every 100ms}

• FixesPoll data from input stream #260

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