[tex-live] TL2018: Problems with filenames

[Akira Kakuto]

> In my simple test, pdftex can be changed similarly.
> I'll change pdftex if it is OK.

Done in r47676.
Now non-ascii file names in local code page
may be used in pdftex:
pdftex non-ascii-name.tex
pdflatex non-ascii-name.tex
if a line

command_line_encoding = utf8

is written in a suitable texmf.cnf.

In plain pdftex, image names and input file
names can also be non-ascii:

% pdftex  (plain)
\pdfximage{non-ascii.jpg} %should be UTF-8
\pdfrefximage \pdflastximage

\input non-ascii.tex %should be UTF-8
\bye

Note that file names on a disk are in local CP as usual,
however they should be written in UTF-8 in source
files.

In the present latex-core, image names and input
file names seem not to be usable in pdflatex.
I don't know why.

Best,
Akira