gdb: add filename option support
This commit adds support for filename options to GDB's option
sub-system (see cli/cli-option.{c,h}).
The new filename options support quoted and escaped filenames, and tab
completion is fully supported.
This commit adds the new option, and adds these options to the
'maintenance test-options' command as '-filename', along with some
tests that exercise this new option.
I've split the -filename testing into two. In gdb.base/options.exp we
use the -filename option with some arbitrary strings. This tests that
GDB can correctly extract the value from a filename option, and that
GDB can complete other options after a filename option. However,
these tests don't actually pass real filenames, nor do they test
filename completion.
In gdb.base/filename-completion.exp I have added some tests that test
the -filename option with real filenames, and exercise filename tab
completion.
This commit doesn't include any real uses of the new filename options,
that will come in the next commit.
5 files changed
