mu server uses PCRE-compatible regular expressions, but mu4e needs
Emacs-style. In simple cases, the two are the same, but when it gets
slightly more complicated they do not.
E.g.,
(foo|bar) => \(foo\|bar\)
Mu4e can do the conversion automatically, but for this the pcre2el
package (available in MELPA) is required, and is used if user installs
is. Anyway, this code implements the automatic conversion and adds some
documentation.
Fixes#2816.
The man-page sources use single quotes to quote text. However, this can be
problematic in man-pages because if a single quote appears at the beginning of a
line the following word is interpreted by troff as a macro. For example, this
paragraph in mu-easy.7:
What if we want to see some of the body of the message? You can get a 'summary'
of the first lines of the message using the \fI\-\-summary\-len\fP option, which will
'summarize' the first \fIn\fP lines of the message:
elicits this warning:
$ man --warnings obj-x86_64-linux-gnu/man/mu-easy.7 >/dev/null
troff:<standard input>:166: warning: macro 'summarize'' not defined
and gets truncated:
What if we want to see some of the body of the message? You can get a
'summary' of the first lines of the message using the --summary-len op‐
tion, which will
One could adjust the line-wrapping to move the quoted text away from the
beginning of the line, but that is fragile. Another possibility would be to use
the troff escape-sequences for open and close quotes (`\(oq` and `\(cq`
respectively), but ox-man is being used precisely to avoid having to handle
troff directly. Instead use back-ticks for left quotes. Thus:
What if we want to see some of the body of the message? You can get a `summary'
of the first lines of the message using the \fI\-\-summary\-len\fP option, which will
`summarize' the first \fIn\fP lines of the message:
which is rendered correctly:
What if we want to see some of the body of the message? You can get a
`summary' of the first lines of the message using the --summary-len op-
tion, which will `summarize' the first n lines of the message:
Signed-off-by: Jeremy Sowden <azazel@debian.org>
The command names are formatted inconsistently, e.g.:
* NAME
~mu add~ - add one or more messages to the database
versus:
* NAME
*mu cfind* is the *mu* command to find contacts in the *mu* database and export them
versus:
* NAME
mu server - the mu backend for the mu4e e-mail client
and the format, with a space between "mu" and the subcommand, is not compatible
with mandb(8). Use formatting which is consistent and replace the spaces with
hyphens.
Signed-off-by: Jeremy Sowden <azazel@debian.org>
Xapian supports an "ngrams" option to help with languages/scripts
without explicit wordbreaks, such as Chinese / Japanese / Korean.
Add some plumbing for supporting this in mu as well. Experimental for
now.
Generate the manpages from org-documents which makes it a bit easier to
keep them update to date since I find org-syntax easier than troff, and
we can use include files.
