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kakoune/rc/tools/man.kak
Frank LENORMAND 61366fd1ef rc man: Handle early window resize
If the window gets resized before the `man` command is called, the
hook will error out and display an error.

Fix #3432
2020-06-03 15:47:46 +03:00

140 lines
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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=$?
col -b -x > ${colout} < ${manout}
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%%\(*}"
;;
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 man-search -params 2 %{
set-register / %arg[1]
execute-keys %arg[2]
}
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> }
# Expand backward and forward, and then try to search for a man page link
define-command man-link-here %{ evaluate-commands -save-regs / %{
man-search %opt[man_link2] '<a-?>\b\w<ret><a-;>?\)<ret>'
}} -hidden
# Search current selection for a man page link
define-command man-link %{ evaluate-commands -save-regs / %{
man-search %opt[man_link1] s<ret>
}} -hidden
define-command -docstring 'Try to jump to a man page' \
man-jump %{
try %{ man-link } catch %{ man-link-here } 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-mode
define-command man-mode-map -params 3 %{
map global man-mode %arg[1] %arg[2] -docstring %arg[3]
} -hidden
man-mode-map 'g' ': man-jump<ret>' 'Jump to a man page using selected man page link'
man-mode-map 'j' ': try %{ man-link-next }<ret>' 'Go to next man page link'
man-mode-map 'k' ': try %{ man-link-prev }<ret>' 'Go to previous man page link'
man-mode-map 'm' ': man<space>' 'Look up a man page'