[OE-core] is 'SRC_URI_append += "file://appendtest.txt"' in layerappend.py deliberate?

[Robert P. J. Day]

  just noticed in meta/lib/oeqa/selftest/cases/layerappend.py this
snippet:

////// start

    append = """
FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"

SRC_URI_append = " file://appendtest.txt"     <--- first

sysroot_stage_all_append() {
        install -m 644 ${WORKDIR}/appendtest.txt ${SYSROOT_DESTDIR}/
}

"""

    append2 = """
FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"

SRC_URI_append += "file://appendtest.txt"     <--- second
"""

////// end

  is there some reason that SRC_URI_append is done correctly in that
first example, but in that weirdly superfluous way using "+=" in the
second example?

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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