8.4.2 Mode Line Formatting
Mode line formatting variables (e.g.,
gnus-summary-mode-line-format
) follow the same rules as other,
buffer line oriented formatting variables (see section 8.4.1 Formatting Basics)
with the following two differences:
-
There must be no newline (`\n') at the end.
-
The special `%%b' spec can be used to display the buffer name.
Well, it's no spec at all, really---`%%' is just a way to quote
`%' to allow it to pass through the formatting machinery unmangled,
so that Emacs receives `%b', which is something the Emacs mode line
display interprets to mean "show the buffer name". For a full list of
mode line specs Emacs understands, see the documentation of the
mode-line-format
variable.
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