The test relies on diff -b to compare the text lines.
Two problems here:
1) POSIX diff only has -b (not -w), and it says that a line with no
space is different than the otherwise same line with leading space.
sed 's/^/ /' on both files beforehand would make -b happy? Expected can
be done once, actual each time...
2) elinks inserts some non-breakable spaces (U+00A0), and GNU diff
doesn't recognize them as whitespace (my LANG is en_US.UTF-8).
Here, this elinks doesn't, even with that LANG, but it could well have
changed. Do the test scripts set the locale, e.g. LC_ALL, so we know
elinks will be using UTF-8 for U+00A0? If so, it can be replaced with
mhfixmsg last -outfile - -verbose 2>"$actual.err" |
sed 's/^/ /; s/'"`printf '\\302\\240'`"'/ /g' |
POSIX's Basic Regular Expressions don't support \302 octal notation so
sed doesn't have them, but POSIX's printf(1) does so we use it to
generated the UTF-8; just like tr used to be used, e.g. tr x \\033.
Is that what you're after?
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