legend: Clarify the behavior of -M option#9028
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Esteban82
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May 19, 2026
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As shown by the test script https://github.com/GenericMappingTools/gmt/blob/master/test/pslegend/mixlegend.sh.
When
-Mis not used, the default behavior is use the input file and ignore any hidden file. The current docstring is misleading:This PR fixes it.