add compatibility flags for a bunch of scripts (part 3)

sh/minutemaid

@@ -1,5 +1,5 @@
 #!/usr/bin/env dash
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash -hush -ksh +mksh +oksh +osh +posh +yash +zsh
 
 minutemaid() { ### @-
     ### check if the current minute is divisible by a given number,
@@ -32,7 +32,7 @@ minutemaid() { ### @-
     while getopts 'o:h' name; do
         case $name in
         o)  offset="$OPTARG";;
-        ?)  local fd=0
+        ?)  local fd=0 # FIXME: this also matches single-character filenames!
             [ $name = h ] && fd=1 || fd=2
             printf '%s\n' "usage: $0 [-o offset] {interval} [{command} [{args...}]]" >&$fd
             [ $name = h ] && return 0 || return 1;;

sh/monitor

@@ -1,5 +1,5 @@
 #!/usr/bin/env zsh
-# compat: -ash -bash -dash +zsh
+# compat: -ash -bash -dash -hush -ksh -mksh -oksh -osh -posh -yash +zsh
 
 monitor() { ### @-
     ### this is [watch(1)](https://www.man7.org/linux/man-pages/man1/watch.1.html)

sh/morecolors

@@ -1,9 +1,8 @@
 #!/usr/bin/env bash
-# compat: -ash +bash -dash +zsh
+# compat: -ash +bash -dash -hush +ksh -mksh -oksh +osh -posh -yash +zsh
 
-morecolors() { ### @- print all 256 colors that are available on most terminals.
+morecolors() ( ### @- print all 256 colors that are available on most terminals.
     # borrowed from leah2's dotfiles.
-    local i=
     for i in {0..255}; do
         printf '\e[48;5;%dm\e[38;5;15m %03d ' $i $i
         printf '\e[33;5;0m\e[38;5;%dm %03d ' $i $i
@@ -11,6 +10,6 @@ morecolors() { ### @- print all 256 colors that are available on most terminals.
         [ "$(( i+1 <= 16 ? (i+1) % 16 : ( (i+1)-16) % 36 ))" = 0 ] && printf '\e[0m\n'
     done
     return 0
-}
+)
 
 [ -n "${preload+-}" ] || morecolors "$@"

sh/note

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush -ksh +mksh +oksh +osh +posh +yash +zsh
 
 note() { ### @-
     ### act like [`echo2`,](#echo2) but use a bright color to stand out more.

sh/now

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush -ksh +mksh +oksh +osh +posh +yash +zsh
 
 now() { ### @-
     ### print a date-time (UTC) in a sortable format.
@@ -17,11 +17,11 @@ now() { ### @-
 
     local dt= fmt='+%F_%T_%N'
     if [ -z "$1" ]; then
-        dt="$(date -u "$fmt")"
+        dt="$(exec /usr/bin/env date -u "$fmt")"
     elif [ -e "$1" ]; then
-        dt="$(date -u -r "$1" "$fmt")"
+        dt="$(exec /usr/bin/env date -u -r "$1" "$fmt")"
     else
-        dt="$(date -u -d "$1" "$fmt")"
+        dt="$(exec /usr/bin/env date -u -d "$1" "$fmt")"
     fi
 
     local F= T= N=

sh/oshi

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush +ksh +mksh +oksh -osh +posh +yash +zsh
 
 __oshi() { ### @oshi
     ### upload files (or stdin) to [oshi.at.](https://oshi.at)

sh/oxo

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush -ksh +mksh +oksh +osh +posh +yash +zsh
 
 # **TL;DR RULES:**
 # * no executables (for the most part)

sh/pause

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash -hush +ksh +mksh -oksh -osh +posh +yash +zsh
 
 ### @ pause
 ### pause — the companion script of [`confirm`.](#confirm)

sh/pegg

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash -hush +zsh
 
 pegg() { ### @-
     ### download and (pip) install a Python "egg" from a project on GitHub,

sh/permit

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush +ksh +mksh +oksh +osh +posh +yash +zsh
 
 __permit_hex() {
     if xxd -l 0 2>/dev/null; then

sh/pippy

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash -hush +zsh
 
 pippy() { ### @-
     ### install Python packages using pip,

sh/pre

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush +ksh +mksh +oksh +osh +posh +yash +zsh
 
 pre() { ### @-
     ### dump all the `#define`s that `$CC $CPPFLAGS $CFLAGS $LDFLAGS` would result in.

sh/psbm

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh YES_BB_AWK
+# compat: +ash +bash +dash +hush +ksh +mksh +oksh +osh +posh +yash +zsh YES_BB_AWK
 
 psbm() { ### @-
     ### display and order processes by their memory usage ascending, and their sum.
@@ -10,7 +10,7 @@ psbm() { ### @-
     ###   199.95M    1060 chromium
     ### ```
     [ -z "$MSYSTEM" ] || { printf "%s\n" "$0: unsupported on MSYS2" >&2; return 1; }
-    ps axco rss,pid,command | awk '
+    /usr/bin/env ps axco rss,pid,command | awk '
     NR>1&&$1>0{t+=$1;printf("%8.2fM %7d %s\n",$1/1024,$2,$3)}
     END{printf("%8.2fM\n",t/1024)}
     ' | sort -n

sh/randir

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush +ksh +mksh +oksh +osh +posh +yash +zsh
 
 # works with busybox.
 

sh/recolor

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash -hush +zsh
 
 __recolor_install() {
     ForegroundColour() { recolor RAW 10 "$@"; }

sh/rot13

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh
+# compat: +ash +bash +dash +hush +ksh +mksh +oksh +osh +posh +yash +zsh
 
 # works with busybox tr.
 

sh/running

@@ -1,5 +1,5 @@
 #!/usr/bin/env sh
-# compat: +ash +bash +dash +zsh YES_BB_AWK
+# compat: +ash +bash +dash +hush -ksh +mksh +oksh +osh +posh +yash +zsh YES_BB_AWK
 
 # probably not compatible with busybox ps because its column 2 isn't PID.
 
@@ -21,7 +21,7 @@ running() { ### @- WIP
     # argumentless flags accepted by coreutils:
     #   a c d e f g h j l m n r s t u v w x A F H L M N P S T V X Z
 
-    ps -f | awk -v cmd=$cmd -v pid=$pid '
+    /usr/bin/env ps -f | awk -v cmd=$cmd -v pid=$pid '
     NR==1{
         s=index($0,"COMMAND")
         s=s?s:index($0,"CMD")