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kakoune/rc/tools/man.kak
Johannes Altmanninger c9a544413c rc tools ctags/man: rationalize sorting of completion candidates
As of recently, shell script candidate completions are computed in
the background, and displayed incrementally.
Sorting completions means we can't show partial results.

We do this for "ctags-search"; but if there is only one ctags file
there is already a sensible order (which is slightly different than
what GNU sort does). So let's preserve the order in that case.
The number of completions is probably too high for an order to be useful.

Similarly, for "man", sorting is probably not very helpful because
there are so many results.

See https://github.com/mawww/kakoune/pull/5035#discussion_r1413015934
2024-01-13 17:24:03 +01:00

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declare-option -docstring "name of the client in which documentation is to be displayed" \
str docsclient
declare-option -hidden str-list manpage
hook -group man-highlight global WinSetOption filetype=man %{
add-highlighter window/man-highlight group
# Sections
add-highlighter window/man-highlight/ regex ^\S.*?$ 0:title
# Subsections
add-highlighter window/man-highlight/ regex '^ {3}\S.*?$' 0:default+b
# Command line options
add-highlighter window/man-highlight/ regex '^ {7}-[^\s,]+(,\s+-[^\s,]+)*' 0:list
# References to other manpages
add-highlighter window/man-highlight/ regex [-a-zA-Z0-9_.]+\([a-z0-9]+\) 0:header
map window normal <ret> :man-jump<ret>
hook -once -always window WinSetOption filetype=.* %{
remove-highlighter window/man-highlight
unmap window normal <ret>
}
}
hook global WinSetOption filetype=man %{
hook -group man-hooks window WinResize .* %{ man-impl %opt{manpage} }
hook -once -always window WinSetOption filetype=.* %{ remove-hooks window man-hooks }
}
define-command -hidden -params ..3 man-impl %{ evaluate-commands %sh{
buffer_name="$1"
if [ -z "${buffer_name}" ]; then
exit
fi
shift
manout=$(mktemp "${TMPDIR:-/tmp}"/kak-man.XXXXXX)
manerr=$(mktemp "${TMPDIR:-/tmp}"/kak-man.XXXXXX)
colout=$(mktemp "${TMPDIR:-/tmp}"/kak-man.XXXXXX)
env MANWIDTH=${kak_window_range##* } man "$@" > "$manout" 2> "$manerr"
retval=$?
if command -v col >/dev/null; then
col -b -x > ${colout} < ${manout}
else
sed 's/.//g' > ${colout} < ${manout}
fi
rm ${manout}
if [ "${retval}" -eq 0 ]; then
printf %s\\n "
edit -scratch %{*$buffer_name ${*}*}
execute-keys '%|cat<space>${colout}<ret>gk'
nop %sh{ rm ${colout}; rm ${manerr} }
set-option buffer filetype man
set-option window manpage $buffer_name $*
"
else
printf '
fail %%{%s}
nop %%sh{ rm "%s"; rm "%s" }
' "$(cat "$manerr")" "${colout}" "${manerr}"
fi
} }
define-command -params ..1 \
-shell-script-candidates %{
find /usr/share/man/ $(printf %s "${MANPATH}" |
sed 's/:/ /') -name '*.[1-8]*' |
sed 's,^.*/\(.*\)\.\([1-8][a-zA-Z]*\).*$,\1(\2),'
} \
-docstring %{
man [<page>]: manpage viewer wrapper
If no argument is passed to the command, the selection will be used as page
The page can be a word, or a word directly followed by a section number between parenthesis, e.g. kak(1)
} man %{ evaluate-commands %sh{
subject=${1-$kak_selection}
## The completion suggestions display the page number, strip them if present
case "${subject}" in
*\([1-8]*\))
pagenum="${subject##*\(}"
pagenum="${pagenum%\)}"
subject="${subject%%\(*}"
;;
*)
pagenum=""
;;
esac
printf %s\\n "evaluate-commands -try-client %opt{docsclient} man-impl man $pagenum $subject"
} }
# The following section of code enables a user
# to go to next or previous man page links and to follow man page links,
# for example, apropos(1), that would normally appear in SEE ALSO sections.
# The user would position the cursor on any character of the link
# and then press <ret> to change to a buffer showing the man page.
# Regex pattern defining a man page link.
# Used for determining if a selection, which may just be a link, is a link.
declare-option -hidden regex man_link1 \
[\w_.:-]+\(\d[a-z]*\)
# Same as above but with lookbehind and lookahead patterns.
# Used for searching for a man page link.
declare-option -hidden regex man_link2 \
"(?:^|(?<=\W))%opt{man_link1}(?=\W)"
# Define a useful command sequence for searching a given regex
# and a given sequence of search keys.
define-command -hidden man-search -params 2 %{
set-register / %arg[1]
try %{
execute-keys %arg[2]
} catch %{
fail "Could not find man page link"
}
}
define-command -docstring 'Go to next man page link' \
man-link-next %{ man-search %opt[man_link2] n }
define-command -docstring 'Go to previous man page link' \
man-link-prev %{ man-search %opt[man_link2] <a-n> }
define-command -docstring 'Try to jump to a man page' \
man-jump %{
try %{ execute-keys <a-a><a-w> s %opt[man_link1] <ret> } catch %{ fail 'Not a valid man page link' }
try %{ man } catch %{ fail 'No man page link to follow' }
}
# Suggested keymaps for a user mode
declare-user-mode man
map global man 'g' -docstring 'Jump to a man page using selected man page link' :man-jump<ret>
map global man 'j' -docstring 'Go to next man page link' :man-link-next<ret>
map global man 'k' -docstring 'Go to previous man page link' :man-link-prev<ret>
map global man 'm' -docstring 'Look up a man page' :man<space>