message: Drop reference to the [/] macro in ARCHITECTURE.md
diff: @@ -83,8 +83,7 @@ rust source code is created in a temporary directory, `cargo` binary
  is invoked via `std::process::Command` and then stdout and stderr are
  verified against the expected output. To simplify testing, several
  macros of the form `[MACRO]` are used in the expected output. For
  -example, `[..]` matches any string and `[/]` matches `/` on Unixes and
  -`\` on windows.
  +example, `[..]` matches any string.
  To see stdout and stderr streams of the subordinate process, add `.stream()`
  call to `execs()`:
  