8000 Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK creates invalid YAMl if first line has leading spaces · Issue #26065 · symfony/symfony · GitHub
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Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK creates invalid YAMl if first line has leading spaces #26065
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@tamc

Description

@tamc
Q A
Bug report? yes
Feature request? no
BC Break report? no
RFC? no
Symfony version 3.4.4

Doing this:

Yaml::dump(
    ["text" => "  leading space in first line\nno leading space in last line\n"],
    2, 
    4, 
    Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK
);

Will produce this:

text: |
       leading space in first line
     no leading space in last line

Which is invalid YAML because when the first line has leading spaces it needs a block indentation indicator like this:

text: |4
      leading space in first line
    no leading space in last line

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