Add missing shell completions

se/completions/bash/se

@@ -2,7 +2,7 @@ _se(){
 	COMPREPLY=()
 	local cur="${COMP_WORDS[COMP_CWORD]}"
 	local prev="${COMP_WORDS[COMP_CWORD-1]}"
-	local commands="--help --plain --version british2american build build-ids build-images build-manifest build-spine build-title build-toc clean compare-versions create-draft dec2roman extract-ebook find-mismatched-dashes find-mismatched-diacritics find-unusual-characters help hyphenate interactive-replace lint make-url-safe modernize-spelling prepare-release recompose-epub renumber-endnotes roman2dec semanticate shift-endnotes shift-illustrations split-file titlecase typogrify unicode-names version word-count xpath"
+	local commands="--help --plain --version british2american build build-ids build-images build-manifest build-spine build-title build-toc clean compare-versions create-draft css-select dec2roman extract-ebook find-mismatched-dashes find-mismatched-diacritics find-unusual-characters help hyphenate interactive-replace lint make-url-safe modernize-spelling prepare-release recompose-epub renumber-endnotes roman2dec semanticate shift-endnotes shift-illustrations split-file titlecase typogrify unicode-names version word-count xpath"
 	if [[ $COMP_CWORD -gt 1 ]]; then
 		case "${COMP_WORDS[1]}" in
 			british2american)
@@ -135,6 +135,14 @@ _se(){
 				COMPREPLY+=($(compgen -d -X ".*" -- "${cur}"))
 				COMPREPLY+=($(compgen -f -X "!*.xhtml" -- "${cur}"))
 				;;
+			shift-endnotes)
+				COMPREPLY+=($(compgen -W "-a --amount -d --decrement -h --help -i --increment" -- "${cur}"))
+				COMPREPLY+=($(compgen -d -X ".*" -- "${cur}"))
+				;;
+			shift-illustrations)
+				COMPREPLY+=($(compgen -W "-a --amount -d --decrement -h --help -i --increment" -- "${cur}"))
+				COMPREPLY+=($(compgen -d -X ".*" -- "${cur}"))
+				;;
 			split-file)
 				COMPREPLY+=($(compgen -W "-f --filename-format= -h --help -s --start-at= -t --template-file=" -- "${cur}"))
 				COMPREPLY+=($(compgen -f -X "!*.htm" -- "${cur}"))

se/completions/fish/se.fish

@@ -151,11 +151,13 @@ complete -c se -A -n "__fish_seen_subcommand_from semanticate" -s h -l help -x -
 complete -c se -A -n "__fish_seen_subcommand_from semanticate" -s v -l verbose -d "increase output verbosity"
 
 complete -c se -n "__fish_se_no_subcommand" -a shift-endnotes -d "Increment the specified endnote and all following endnotes by 1 or a specified amount."
+complete -c se -A -n "__fish_seen_subcommand_from shift-endnotes" -s a -l amount -d "the amount to increment or decrement by; defaults to 1"
 complete -c se -A -n "__fish_seen_subcommand_from shift-endnotes" -s d -l decrement -d "decrement the target endnote number and all following endnotes"
 complete -c se -A -n "__fish_seen_subcommand_from shift-endnotes" -s h -l help -x -d "show this help message and exit"
 complete -c se -A -n "__fish_seen_subcommand_from shift-endnotes" -s i -l increment -d "increment the target endnote number and all following endnotes"
 
 complete -c se -n "__fish_se_no_subcommand" -a shift-illustrations -d "Increment the specified illustration and all following illustrations by 1 or a specified amount."
+complete -c se -A -n "__fish_seen_subcommand_from shift-illustrations" -s a -l amount -d "the amount to increment or decrement by; defaults to 1"
 complete -c se -A -n "__fish_seen_subcommand_from shift-illustrations" -s d -l decrement -d "decrement the target illustration number and all following illustrations"
 complete -c se -A -n "__fish_seen_subcommand_from shift-illustrations" -s h -l help -x -d "show this help message and exit"
 complete -c se -A -n "__fish_seen_subcommand_from shift-illustrations" -s i -l increment -d "increment the target illustration number and all following illustrations"

se/completions/zsh/_se

@@ -243,11 +243,20 @@ case $state in
 				;;
 			shift-endnotes)
 				_arguments -s \
+					{-a,--amount}'[the amount to increment or decrement by; defaults to 1]' \
 					{-d,--decrement}'[decrement the target endnote number and all following endnotes]' \
 					{-h,--help}'[show a help message and exit]' \
 					{-i,--increment}'[increment the target endnote number and all following endnotes]' \
 					'*: :_directories'
 				;;
+			shift-illustrations)
+				_arguments -s \
+					{-a,--amount}'[the amount to increment or decrement by; defaults to 1]' \
+					{-d,--decrement}'[decrement the target illustration number and all following illustrations]' \
+					{-h,--help}'[show a help message and exit]' \
+					{-i,--increment}'[increment the target illustration number and all following illustrations]' \
+					'*: :_directories'
+				;;
 			split-file)
 				_arguments -s \
 					{-f,--filename-format}'[a format string for the output files; `%n` is replaced with the current chapter number; defaults to `chapter-%n.xhtml`]' \