[#BloombergLP-bslfmt-FormatSpecificationParser-alternativeFlag]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::xref:BloombergLP/bslfmt/FormatSpecificationParser.adoc[FormatSpecificationParser]::alternativeFlag
:relfileprefix: ../../../
:mrdocs:

Return true if parsing detected an alternative processing flag in the specification, otherwise return false. If `parse` has not previously been called throw a `format_error` exception.

== Synopsis

Declared in `<bslfmt_formatspecificationparser.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
bool
alternativeFlag() const;
----


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