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batman: Use self as MANPAGER

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With certain implementations of `man`, the pager is called with execve
and naiive argument splitting instead of going through the shell.

This change uses the script as the pager itself, working around
the issue.
This commit is contained in:
Ethan P 2023-05-15 18:40:44 -07:00
parent e609d1a2c5
commit 14f36f51b7
No known key found for this signature in database
GPG Key ID: B29B90B1B228FEBC
1 changed files with 27 additions and 3 deletions
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30
src/batman.sh
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@ -6,7 +6,9 @@
# Issues: https://github.com/eth-p/bat-extras/issues
# -----------------------------------------------------------------------------
# shellcheck disable=SC1090 disable=SC2155
LIB="$(cd "$(dirname "${BASH_SOURCE[0]}")" && cd "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo ".")")/../lib" && pwd)"
SELF_NC="${BASH_SOURCE:-$0}"
SELF="$(cd "$(dirname "${SELF_NC}")" && cd "$(dirname "$(readlink "${SELF_NC}" || echo ".")")" && pwd)/$(basename "$(readlink "${SELF_NC}" || echo "${SELF_NC}")")"
LIB="$(cd "$(dirname "${SELF_NC}")" && cd "$(dirname "$(readlink "${SELF_NC}" || echo ".")")/../lib" && pwd)"
if [[ -n "${MANPAGER}" ]]; then BAT_PAGER="$MANPAGER"; fi
source "${LIB}/constants.sh"
source "${LIB}/pager.sh"
@ -18,12 +20,14 @@ source "${LIB}/opt_hook_version.sh"
hook_color
hook_version
# -----------------------------------------------------------------------------
FORWARDED_ARGS=()
MAN_ARGS=()
BAT_ARGS=()
while shiftopt; do
case "$OPT" in
--paging|--pager) shiftval; BAT_ARGS+=("${OPT}=${OPT_VAL}") ;;
--paging|--pager) shiftval; FORWARDED_ARGS+=("${OPT}=${OPT_VAL}");
BAT_ARGS+=("${OPT}=${OPT_VAL}") ;;
*) MAN_ARGS+=("$OPT") ;;
esac
done
@ -39,7 +43,27 @@ if [[ -z "${BAT_STYLE+x}" ]]; then
fi
# -----------------------------------------------------------------------------
export MANPAGER='sh -c "col -bx | '"$(printf "%q" "$EXECUTABLE_BAT")"' --language=man '$(printf "%q " "${BAT_ARGS[@]}")'"'
# When called as the manpager, do some preprocessing and feed everything to bat.
if [[ "${BATMAN_IS_BEING_MANPAGER:-}" = "yes" ]]; then
print_manpage() {
col -bx | "$EXECUTABLE_BAT" --language=man "${BAT_ARGS[@]}"
exit $?
}
if [[ "${#MAN_ARGS[@]}" -eq 1 ]]; then
# The input was passed as a file.
cat "${MAN_ARGS[0]}" | print_manpage
else
# The input was passed via stdin.
cat | print_manpage
fi
exit
fi
# -----------------------------------------------------------------------------
export MANPAGER="env BATMAN_IS_BEING_MANPAGER=yes bash $(printf "%q " "$SELF" "${FORWARDED_ARGS[@]}")"
export MANROFFOPT='-c'
# If no argument is provided and fzf is installed, use fzf to search for man pages.