Bugfix/empty line at start parsing fixed

[quintush]

Fix parsing when multiline strings start with a line-ending (resolves #65)
Updated tests to validate the behaviour and did some code cleaning.

[Copilot]

Pull Request Overview

This PR fixes a parsing bug where multiline strings starting with a line-ending were incorrectly handled. The fix removes the check for line breaks at the start of block scalar values, which was causing incorrect indentation hints to be written.

Key changes:

• Modified writeBlockScalarHints to only check for leading spaces, not line breaks
• Added test cases validating multiline strings with leading newlines
• Updated existing test assertion to reflect corrected output format

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
emitterc.go	Removed isLineBreak(value, 0) check from the condition that triggers indentation hints for block scalars
encode_test.go	Added test cases for strings with leading newlines and updated assertion to match corrected behavior

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[ingydotnet]

Your commits seem to include a merge commit. We don't accept those. Can you adjust that?

$ git fetch [email protected]:helm-unittest/go-yaml.git bugfix/EmptyLineAtStartParsingFixed && git log --graph --decorate --pretty=oneline --abbrev-commit FETCH_HEAD | head -5
From github.com:helm-unittest/go-yaml
 * branch            bugfix/EmptyLineAtStartParsingFixed -> FETCH_HEAD
*   96c32bb Correct comment feedback
|\  
| * e99d6a6 (tag: v4.0.0-rc.3) Minimal fix for 2 Makefile bugs
| * f215992 Replace emitterError calls with errors.New calls
| * 7dee9b1 Apply code suggestions 2