gnus: Hiding Headers
4.1 Hiding Headers
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The top section of each article is the “head”. (The rest is the “body”,
but you may have guessed that already.)
There is a lot of useful information in the head: the name of the
person who wrote the article, the date it was written and the subject of
the article. That’s well and nice, but there’s also lots of information
most people do not want to see—what systems the article has passed
through before reaching you, the ‘Message-ID’, the ‘References’, etc. ad
nauseam—and you’ll probably want to get rid of some of those lines. If
you want to keep all those lines in the article buffer, you can set
‘gnus-show-all-headers’ to ‘t’.
Gnus provides you with two variables for sifting headers:
‘gnus-visible-headers’
If this variable is non-‘nil’, it should be a regular expression
that says what headers you wish to keep in the article buffer. All
headers that do not match this variable will be hidden.
For instance, if you only want to see the name of the person who
wrote the article and the subject, you’d say:
(setq gnus-visible-headers "^From:\\|^Subject:")
This variable can also be a list of regexps to match headers to
remain visible.
‘gnus-ignored-headers’
This variable is the reverse of ‘gnus-visible-headers’. If this
variable is set (and ‘gnus-visible-headers’ is ‘nil’), it should be
a regular expression that matches all lines that you want to hide.
All lines that do not match this variable will remain visible.
For instance, if you just want to get rid of the ‘References’ line
and the ‘Xref’ line, you might say:
(setq gnus-ignored-headers "^References:\\|^Xref:")
This variable can also be a list of regexps to match headers to be
removed.
Note that if ‘gnus-visible-headers’ is non-‘nil’, this variable
will have no effect.
Gnus can also sort the headers for you. (It does this by default.)
You can control the sorting by setting the ‘gnus-sorted-header-list’
variable. It is a list of regular expressions that says in what order
the headers are to be displayed.
For instance, if you want the name of the author of the article
first, and then the subject, you might say something like:
(setq gnus-sorted-header-list '("^From:" "^Subject:"))
Any headers that are to remain visible, but are not listed in this
variable, will be displayed in random order after all the headers listed
in this variable.
You can hide further boring headers by setting
‘gnus-treat-hide-boring-headers’ to ‘head’. What this function does
depends on the ‘gnus-boring-article-headers’ variable. It’s a list, but
this list doesn’t actually contain header names. Instead it lists
various “boring conditions” that Gnus can check and remove from sight.
These conditions are:
‘empty’
Remove all empty headers.
‘followup-to’
Remove the ‘Followup-To’ header if it is identical to the
‘Newsgroups’ header.
‘reply-to’
Remove the ‘Reply-To’ header if it lists the same addresses as the
‘From’ header, or if the ‘broken-reply-to’ group parameter is set.
‘newsgroups’
Remove the ‘Newsgroups’ header if it only contains the current
group name.
‘to-address’
Remove the ‘To’ header if it only contains the address identical to
the current group’s ‘to-address’ parameter.
‘to-list’
Remove the ‘To’ header if it only contains the address identical to
the current group’s ‘to-list’ parameter.
‘cc-list’
Remove the ‘Cc’ header if it only contains the address identical to
the current group’s ‘to-list’ parameter.
‘date’
Remove the ‘Date’ header if the article is less than three days
old.
‘long-to’
Remove the ‘To’ and/or ‘Cc’ header if it is very long.
‘many-to’
Remove all ‘To’ and/or ‘Cc’ headers if there are more than one.
To include these three elements, you could say something like:
(setq gnus-boring-article-headers
'(empty followup-to reply-to))
This is also the default value for this variable.
Info Catalog
gnus: Article Buffer
gnus: Using MIME