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2020-01-19 Karl Berry <karl@freefriends.org>
+ * kpsewhich.c (ENSURE_NONEMPTY_STRING): new macro.
+ (read_command_line): ensure nonempty arguments to --format,
+ --safe-{in,out}-name, --var-brace-value, --var-value.
+ Empty args to the other options seem possible.
+
* line.c (read_line): silently drop nul (zero) bytes.
* tests/cnfnull.test: test for nul bytes in texmf.cnf.
* Makefile.am (TESTS),