Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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Converting files or characters using iconv (or the iconv library) result in
an "illegal input sequence" error when encountering an "overscore" character
(IS08859-1: Hex "AF"). This happens tough there is a corresponding character
is available in IBM273 (Hex: "BC"). Converting to IBM1141, which is  the same
table as IBM273 except for the EURO-Sign works.

You can reproduce this behavior with the following command:

echo "AF" | xxd -r -p | iconv -f iso8859-1 -t ibm273

In contrast:
echo "AF" | xxd -r -p | iconv -f iso8859-1 -t ibm1141
works.

Using ibm273//TRANSLIT is not an option currently, as it would require a
lot of changes in the user code, and would just not throw an error, but
replace the "overscore" with an "o".

This problem happens in rhel7 and fedora 28.

Our IBM273 codepage maps the 0xbc EBCDIC codepoint to the U+203E OVERLINE character:

<U203E>     /xbc         OVERLINE

While this is arguably a mistake (and we will fix it upstream), it is now too late to change this in Red Hat Enterprise Linux 6 because many customers will expect the mappings to remain stable.

Development Management has reviewed and declined this request. You may appeal this decision by reopening this request.