diff --git a/index.sh b/index.sh
old mode 100644
new mode 100755
diff --git a/lib/mo b/lib/mo
new file mode 100755
index 0000000..1ae7707
--- /dev/null
+++ b/lib/mo
@@ -0,0 +1,1061 @@
+#!/usr/bin/env bash
+#
+#/ Mo is a mustache template rendering software written in bash.  It inserts
+#/ environment variables into templates.
+#/
+#/ Simply put, mo will change {{VARIABLE}} into the value of that
+#/ environment variable.  You can use {{#VARIABLE}}content{{/VARIABLE}} to
+#/ conditionally display content or iterate over the values of an array.
+#/
+#/ Learn more about mustache templates at https://mustache.github.io/
+#/
+#/ Simple usage:
+#/
+#/    mo [OPTIONS] filenames...
+#/
+#/ Options:
+#/
+#/    -u, --fail-not-set
+#/          - Fail upon expansion of an unset variable.
+#/    -e, --false
+#/          - Treat the string "false" as empty for conditionals.
+#/    -h, --help
+#/          - This message.
+#/    -s=FILE, --source=FILE
+#/          - Load FILE into the environment before processing templates.
+#
+# Mo is under a MIT style licence with an additional non-advertising clause.
+# See LICENSE.md for the full text.
+#
+# This is open source!  Please feel free to contribute.
+#
+# https://github.com/tests-always-included/mo
+
+
+# Public: Template parser function.  Writes templates to stdout.
+#
+# $0             - Name of the mo file, used for getting the help message.
+# --allow-function-arguments
+#                - Permit functions in templates to be called with additional
+#                  arguments. This puts template data directly in to the path
+#                  of an eval statement. Use with caution. Not listed in the
+#                  help because it only makes sense when mo is sourced.
+# -u, --fail-not-set
+#                - Fail upon expansion of an unset variable.  Default behavior
+#                  is to silently ignore and expand into empty string.
+# -e, --false    - Treat "false" as an empty value.  You may set the
+#                  MO_FALSE_IS_EMPTY environment variable instead to a non-empty
+#                  value to enable this behavior.
+# -h, --help     - Display a help message.
+# -s=FILE, --source=FILE
+#                - Source a file into the environment before processint
+#                  template files.
+# --             - Used to indicate the end of options.  You may optionally
+#                  use this when filenames may start with two hyphens.
+# $@             - Filenames to parse.
+#
+# Mo uses the following environment variables:
+#
+# MO_ALLOW_FUNCTION_ARGUMENTS
+#                     - When set to a non-empty value, this allows functions
+#                       referenced in templates to receive additional
+#                       options and arguments. This puts the content from the
+#                       template directly into an eval statement. Use with
+#                       extreme care.
+# MO_FUNCTION_ARGS    - Arguments passed to the function
+# MO_FAIL_ON_UNSET    - When set to a non-empty value, expansion of an unset
+#                       env variable will be aborted with an error.
+# MO_FALSE_IS_EMPTY   - When set to a non-empty value, the string "false"
+#                       will be treated as an empty value for the purposes
+#                       of conditionals.
+# MO_ORIGINAL_COMMAND - Used to find the `mo` program in order to generate
+#                       a help message.
+#
+# Returns nothing.
+mo() (
+    # This function executes in a subshell so IFS is reset.
+    # Namespace this variable so we don't conflict with desired values.
+    local moContent f2source files doubleHyphens
+
+    IFS=$' \n\t'
+    files=()
+    doubleHyphens=false
+
+    if [[ $# -gt 0 ]]; then
+        for arg in "$@"; do
+            if $doubleHyphens; then
+                # After we encounter two hyphens together, all the rest
+                # of the arguments are files.
+                files=("${files[@]}" "$arg")
+            else
+                case "$arg" in
+                    -h|--h|--he|--hel|--help|-\?)
+                        moUsage "$0"
+                        exit 0
+                        ;;
+
+                    --allow-function-arguments)
+                        # shellcheck disable=SC2030
+                        MO_ALLOW_FUNCTION_ARGUMENTS=true
+                        ;;
+
+                    -u | --fail-not-set)
+                        # shellcheck disable=SC2030
+                        MO_FAIL_ON_UNSET=true
+                        ;;
+
+                    -e | --false)
+                        # shellcheck disable=SC2030
+                        MO_FALSE_IS_EMPTY=true
+                        ;;
+
+                    -s=* | --source=*)
+                        if [[ "$arg" == --source=* ]]; then
+                            f2source="${arg#--source=}"
+                        else
+                            f2source="${arg#-s=}"
+                        fi
+
+                        if [[ -f "$f2source" ]]; then
+                            # shellcheck disable=SC1090
+                            . "$f2source"
+                        else
+                            echo "No such file: $f2source" >&2
+                            exit 1
+                        fi
+                        ;;
+
+                    --)
+                        # Set a flag indicating we've encountered double hyphens
+                        doubleHyphens=true
+                        ;;
+
+                    *)
+                        # Every arg that is not a flag or a option should be a file
+                        files=(${files[@]+"${files[@]}"} "$arg")
+                        ;;
+                esac
+            fi
+        done
+    fi
+
+    moGetContent moContent "${files[@]}" || return 1
+    moParse "$moContent" "" true
+)
+
+
+# Internal: Call a function.
+#
+# $1 - Function to call
+# $2 - Content to pass
+# $3 - Additional arguments as a single string
+#
+# This can be dangerous, especially if you are using tags like
+# {{someFunction ; rm -rf / }}
+#
+# Returns nothing.
+moCallFunction() {
+    local moArgs moFunctionArgs
+
+    moArgs=()
+    moTrimWhitespace moFunctionArgs "$3"
+
+    # shellcheck disable=SC2031
+    if [[ -n "${MO_ALLOW_FUNCTION_ARGUMENTS-}" ]]; then
+        moArgs=$3
+    fi
+
+    echo -n "$2" | MO_FUNCTION_ARGS="$moFunctionArgs" eval "$1" "$moArgs"
+}
+
+
+# Internal: Scan content until the right end tag is found.  Creates an array
+# with the following members:
+#
+#   [0] = Content before end tag
+#   [1] = End tag (complete tag)
+#   [2] = Content after end tag
+#
+# Everything using this function uses the "standalone tags" logic.
+#
+# $1 - Name of variable for the array
+# $2 - Content
+# $3 - Name of end tag
+# $4 - If -z, do standalone tag processing before finishing
+#
+# Returns nothing.
+moFindEndTag() {
+    local content remaining scanned standaloneBytes tag
+
+    #: Find open tags
+    scanned=""
+    moSplit content "$2" '{{' '}}'
+
+    while [[ "${#content[@]}" -gt 1 ]]; do
+        moTrimWhitespace tag "${content[1]}"
+
+        #: Restore content[1] before we start using it
+        content[1]='{{'"${content[1]}"'}}'
+
+        case $tag in
+            '#'* | '^'*)
+                #: Start another block
+                scanned="${scanned}${content[0]}${content[1]}"
+                moTrimWhitespace tag "${tag:1}"
+                moFindEndTag content "${content[2]}" "$tag" "loop"
+                scanned="${scanned}${content[0]}${content[1]}"
+                remaining=${content[2]}
+                ;;
+
+            '/'*)
+                #: End a block - could be ours
+                moTrimWhitespace tag "${tag:1}"
+                scanned="$scanned${content[0]}"
+
+                if [[ "$tag" == "$3" ]]; then
+                    #: Found our end tag
+                    if [[ -z "${4-}" ]] && moIsStandalone standaloneBytes "$scanned" "${content[2]}" true; then
+                        #: This is also a standalone tag - clean up whitespace
+                        #: and move those whitespace bytes to the "tag" element
+                        standaloneBytes=( $standaloneBytes )
+                        content[1]="${scanned:${standaloneBytes[0]}}${content[1]}${content[2]:0:${standaloneBytes[1]}}"
+                        scanned="${scanned:0:${standaloneBytes[0]}}"
+                        content[2]="${content[2]:${standaloneBytes[1]}}"
+                    fi
+
+                    local "$1" && moIndirectArray "$1" "$scanned" "${content[1]}" "${content[2]}"
+                    return 0
+                fi
+
+                scanned="$scanned${content[1]}"
+                remaining=${content[2]}
+                ;;
+
+            *)
+                #: Ignore all other tags
+                scanned="${scanned}${content[0]}${content[1]}"
+                remaining=${content[2]}
+                ;;
+        esac
+
+        moSplit content "$remaining" '{{' '}}'
+    done
+
+    #: Did not find our closing tag
+    scanned="$scanned${content[0]}"
+    local "$1" && moIndirectArray "$1" "${scanned}" "" ""
+}
+
+
+# Internal: Find the first index of a substring.  If not found, sets the
+# index to -1.
+#
+# $1 - Destination variable for the index
+# $2 - Haystack
+# $3 - Needle
+#
+# Returns nothing.
+moFindString() {
+    local pos string
+
+    string=${2%%$3*}
+    [[ "$string" == "$2" ]] && pos=-1 || pos=${#string}
+    local "$1" && moIndirect "$1" "$pos"
+}
+
+
+# Internal: Generate a dotted name based on current context and target name.
+#
+# $1 - Target variable to store results
+# $2 - Context name
+# $3 - Desired variable name
+#
+# Returns nothing.
+moFullTagName() {
+    if [[ -z "${2-}" ]] || [[ "$2" == *.* ]]; then
+        local "$1" && moIndirect "$1" "$3"
+    else
+        local "$1" && moIndirect "$1" "${2}.${3}"
+    fi
+}
+
+
+# Internal: Fetches the content to parse into a variable.  Can be a list of
+# partials for files or the content from stdin.
+#
+# $1   - Variable name to assign this content back as
+# $2-@ - File names (optional)
+#
+# Returns nothing.
+moGetContent() {
+    local content filename target
+
+    target=$1
+    shift
+    if [[ "${#@}" -gt 0 ]]; then
+        content=""
+
+        for filename in "$@"; do
+            #: This is so relative paths work from inside template files
+            content="$content"'{{>'"$filename"'}}'
+        done
+    else
+        moLoadFile content /dev/stdin || return 1
+    fi
+
+    local "$target" && moIndirect "$target" "$content"
+}
+
+
+# Internal: Indent a string, placing the indent at the beginning of every
+# line that has any content.
+#
+# $1 - Name of destination variable to get an array of lines
+# $2 - The indent string
+# $3 - The string to reindent
+#
+# Returns nothing.
+moIndentLines() {
+    local content fragment len posN posR result trimmed
+
+    result=""
+
+    #: Remove the period from the end of the string.
+    len=$((${#3} - 1))
+    content=${3:0:$len}
+
+    if [[ -z "${2-}" ]]; then
+        local "$1" && moIndirect "$1" "$content"
+
+        return 0
+    fi
+
+    moFindString posN "$content" $'\n'
+    moFindString posR "$content" $'\r'
+
+    while [[ "$posN" -gt -1 ]] || [[ "$posR" -gt -1 ]]; do
+        if [[ "$posN" -gt -1 ]]; then
+            fragment="${content:0:$posN + 1}"
+            content=${content:$posN + 1}
+        else
+            fragment="${content:0:$posR + 1}"
+            content=${content:$posR + 1}
+        fi
+
+        moTrimChars trimmed "$fragment" false true " " $'\t' $'\n' $'\r'
+
+        if [[ -n "$trimmed" ]]; then
+            fragment="$2$fragment"
+        fi
+
+        result="$result$fragment"
+
+        moFindString posN "$content" $'\n'
+        moFindString posR "$content" $'\r'
+
+        # If the content ends in a newline, do not indent.
+        if [[ "$posN" -eq ${#content} ]]; then
+            # Special clause for \r\n
+            if [[ "$posR" -eq "$((posN - 1))" ]]; then
+                posR=-1
+            fi
+
+            posN=-1
+        fi
+
+        if [[ "$posR" -eq ${#content} ]]; then
+            posR=-1
+        fi
+    done
+
+    moTrimChars trimmed "$content" false true " " $'\t'
+
+    if [[ -n "$trimmed" ]]; then
+        content="$2$content"
+    fi
+
+    result="$result$content"
+
+    local "$1" && moIndirect "$1" "$result"
+}
+
+
+# Internal: Send a variable up to the parent of the caller of this function.
+#
+# $1 - Variable name
+# $2 - Value
+#
+# Examples
+#
+#   callFunc () {
+#       local "$1" && moIndirect "$1" "the value"
+#   }
+#   callFunc dest
+#   echo "$dest"  # writes "the value"
+#
+# Returns nothing.
+moIndirect() {
+    unset -v "$1"
+    printf -v "$1" '%s' "$2"
+}
+
+
+# Internal: Send an array as a variable up to caller of a function
+#
+# $1   - Variable name
+# $2-@ - Array elements
+#
+# Examples
+#
+#   callFunc () {
+#       local myArray=(one two three)
+#       local "$1" && moIndirectArray "$1" "${myArray[@]}"
+#   }
+#   callFunc dest
+#   echo "${dest[@]}" # writes "one two three"
+#
+# Returns nothing.
+moIndirectArray() {
+    unset -v "$1"
+
+    # IFS must be set to a string containing space or unset in order for
+    # the array slicing to work regardless of the current IFS setting on
+    # bash 3.  This is detailed further at
+    # https://github.com/fidian/gg-core/pull/7
+    eval "$(printf "IFS= %s=(\"\${@:2}\") IFS=%q" "$1" "$IFS")"
+}
+
+
+# Internal: Determine if a given environment variable exists and if it is
+# an array.
+#
+# $1 - Name of environment variable
+#
+# Be extremely careful.  Even if strict mode is enabled, it is not honored
+# in newer versions of Bash.  Any errors that crop up here will not be
+# caught automatically.
+#
+# Examples
+#
+#   var=(abc)
+#   if moIsArray var; then
+#      echo "This is an array"
+#      echo "Make sure you don't accidentally use \$var"
+#   fi
+#
+# Returns 0 if the name is not empty, 1 otherwise.
+moIsArray() {
+    # Namespace this variable so we don't conflict with what we're testing.
+    local moTestResult
+
+    moTestResult=$(declare -p "$1" 2>/dev/null) || return 1
+    [[ "${moTestResult:0:10}" == "declare -a" ]] && return 0
+    [[ "${moTestResult:0:10}" == "declare -A" ]] && return 0
+
+    return 1
+}
+
+
+# Internal: Determine if the given name is a defined function.
+#
+# $1 - Function name to check
+#
+# Be extremely careful.  Even if strict mode is enabled, it is not honored
+# in newer versions of Bash.  Any errors that crop up here will not be
+# caught automatically.
+#
+# Examples
+#
+#   moo () {
+#       echo "This is a function"
+#   }
+#   if moIsFunction moo; then
+#       echo "moo is a defined function"
+#   fi
+#
+# Returns 0 if the name is a function, 1 otherwise.
+moIsFunction() {
+    local functionList functionName
+
+    functionList=$(declare -F)
+    functionList=( ${functionList//declare -f /} )
+
+    for functionName in "${functionList[@]}"; do
+        if [[ "$functionName" == "$1" ]]; then
+            return 0
+        fi
+    done
+
+    return 1
+}
+
+
+# Internal: Determine if the tag is a standalone tag based on whitespace
+# before and after the tag.
+#
+# Passes back a string containing two numbers in the format "BEFORE AFTER"
+# like "27 10".  It indicates the number of bytes remaining in the "before"
+# string (27) and the number of bytes to trim in the "after" string (10).
+# Useful for string manipulation:
+#
+# $1 - Variable to set for passing data back
+# $2 - Content before the tag
+# $3 - Content after the tag
+# $4 - true/false: is this the beginning of the content?
+#
+# Examples
+#
+#   moIsStandalone RESULT "$before" "$after" false || return 0
+#   RESULT_ARRAY=( $RESULT )
+#   echo "${before:0:${RESULT_ARRAY[0]}}...${after:${RESULT_ARRAY[1]}}"
+#
+# Returns nothing.
+moIsStandalone() {
+    local afterTrimmed beforeTrimmed char
+
+    moTrimChars beforeTrimmed "$2" false true " " $'\t'
+    moTrimChars afterTrimmed "$3" true false " " $'\t'
+    char=$((${#beforeTrimmed} - 1))
+    char=${beforeTrimmed:$char}
+
+    # If the content before didn't end in a newline
+    if [[ "$char" != $'\n' ]] && [[ "$char" != $'\r' ]]; then
+        # and there was content or this didn't start the file
+        if [[ -n "$char" ]] || ! $4; then
+            # then this is not a standalone tag.
+            return 1
+        fi
+    fi
+
+    char=${afterTrimmed:0:1}
+
+    # If the content after doesn't start with a newline and it is something
+    if [[ "$char" != $'\n' ]] && [[ "$char" != $'\r' ]] && [[ -n "$char" ]]; then
+        # then this is not a standalone tag.
+        return 2
+    fi
+
+    if [[ "$char" == $'\r' ]] && [[ "${afterTrimmed:1:1}" == $'\n' ]]; then
+        char="$char"$'\n'
+    fi
+
+    local "$1" && moIndirect "$1" "$((${#beforeTrimmed})) $((${#3} + ${#char} - ${#afterTrimmed}))"
+}
+
+
+# Internal: Join / implode an array
+#
+# $1    - Variable name to receive the joined content
+# $2    - Joiner
+# $3-$* - Elements to join
+#
+# Returns nothing.
+moJoin() {
+    local joiner part result target
+
+    target=$1
+    joiner=$2
+    result=$3
+    shift 3
+
+    for part in "$@"; do
+        result="$result$joiner$part"
+    done
+
+    local "$target" && moIndirect "$target" "$result"
+}
+
+
+# Internal: Read a file into a variable.
+#
+# $1 - Variable name to receive the file's content
+# $2 - Filename to load
+#
+# Returns nothing.
+moLoadFile() {
+    local content len
+
+    # The subshell removes any trailing newlines.  We forcibly add
+    # a dot to the content to preserve all newlines.
+    # As a future optimization, it would be worth considering removing
+    # cat and replacing this with a read loop.
+
+    content=$(cat -- "$2" && echo '.') || return 1
+    len=$((${#content} - 1))
+    content=${content:0:$len}  # Remove last dot
+
+    local "$1" && moIndirect "$1" "$content"
+}
+
+
+# Internal: Process a chunk of content some number of times.  Writes output
+# to stdout.
+#
+# $1   - Content to parse repeatedly
+# $2   - Tag prefix (context name)
+# $3-@ - Names to insert into the parsed content
+#
+# Returns nothing.
+moLoop() {
+    local content context contextBase
+
+    content=$1
+    contextBase=$2
+    shift 2
+
+    while [[ "${#@}" -gt 0 ]]; do
+        moFullTagName context "$contextBase" "$1"
+        moParse "$content" "$context" false
+        shift
+    done
+}
+
+
+# Internal: Parse a block of text, writing the result to stdout.
+#
+# $1 - Block of text to change
+# $2 - Current name (the variable NAME for what {{.}} means)
+# $3 - true when no content before this, false otherwise
+#
+# Returns nothing.
+moParse() {
+    # Keep naming variables mo* here to not overwrite needed variables
+    # used in the string replacements
+    local moArgs moBlock moContent moCurrent moIsBeginning moNextIsBeginning moTag
+
+    moCurrent=$2
+    moIsBeginning=$3
+
+    # Find open tags
+    moSplit moContent "$1" '{{' '}}'
+
+    while [[ "${#moContent[@]}" -gt 1 ]]; do
+        moTrimWhitespace moTag "${moContent[1]}"
+        moNextIsBeginning=false
+
+        case $moTag in
+            '#'*)
+                # Loop, if/then, or pass content through function
+                # Sets context
+                moStandaloneAllowed moContent "${moContent[@]}" "$moIsBeginning"
+                moTrimWhitespace moTag "${moTag:1}"
+
+                # Split arguments from the tag name. Arguments are passed to
+                # functions.
+                moArgs=$moTag
+                moTag=${moTag%% *}
+                moTag=${moTag%%$'\t'*}
+                moArgs=${moArgs:${#moTag}}
+                moFindEndTag moBlock "$moContent" "$moTag"
+                moFullTagName moTag "$moCurrent" "$moTag"
+
+                if moTest "$moTag"; then
+                    # Show / loop / pass through function
+                    if moIsFunction "$moTag"; then
+                        #: Consider piping the output to moGetContent
+                        #: so the lambda does not execute in a subshell?
+                        moContent=$(moCallFunction "$moTag" "${moBlock[0]}" "$moArgs")
+                        moParse "$moContent" "$moCurrent" false
+                        moContent="${moBlock[2]}"
+                    elif moIsArray "$moTag"; then
+                        eval "moLoop \"\${moBlock[0]}\" \"$moTag\" \"\${!${moTag}[@]}\""
+                    else
+                        moParse "${moBlock[0]}" "$moCurrent" true
+                    fi
+                fi
+
+                moContent="${moBlock[2]}"
+                ;;
+
+            '>'*)
+                # Load partial - get name of file relative to cwd
+                moPartial moContent "${moContent[@]}" "$moIsBeginning" "$moCurrent"
+                moNextIsBeginning=${moContent[1]}
+                moContent=${moContent[0]}
+                ;;
+
+            '/'*)
+                # Closing tag - If hit in this loop, we simply ignore
+                # Matching tags are found in moFindEndTag
+                moStandaloneAllowed moContent "${moContent[@]}" "$moIsBeginning"
+                ;;
+
+            '^'*)
+                # Display section if named thing does not exist
+                moStandaloneAllowed moContent "${moContent[@]}" "$moIsBeginning"
+                moTrimWhitespace moTag "${moTag:1}"
+                moFindEndTag moBlock "$moContent" "$moTag"
+                moFullTagName moTag "$moCurrent" "$moTag"
+
+                if ! moTest "$moTag"; then
+                    moParse "${moBlock[0]}" "$moCurrent" false "$moCurrent"
+                fi
+
+                moContent="${moBlock[2]}"
+                ;;
+
+            '!'*)
+                # Comment - ignore the tag content entirely
+                # Trim spaces/tabs before the comment
+                moStandaloneAllowed moContent "${moContent[@]}" "$moIsBeginning"
+                ;;
+
+            .)
+                # Current content (environment variable or function)
+                moStandaloneDenied moContent "${moContent[@]}"
+                moShow "$moCurrent" "$moCurrent"
+                ;;
+
+            '=')
+                # Change delimiters
+                # Any two non-whitespace sequences separated by whitespace.
+                # This tag is ignored.
+                moStandaloneAllowed moContent "${moContent[@]}" "$moIsBeginning"
+                ;;
+
+            '{'*)
+                # Unescaped - split on }}} not }}
+                moStandaloneDenied moContent "${moContent[@]}"
+                moContent="${moTag:1}"'}}'"$moContent"
+                moSplit moContent "$moContent" '}}}'
+                moTrimWhitespace moTag "${moContent[0]}"
+                moArgs=$moTag
+                moTag=${moTag%% *}
+                moTag=${moTag%%$'\t'*}
+                moArgs=${moArgs:${#moTag}}
+                moFullTagName moTag "$moCurrent" "$moTag"
+                moContent=${moContent[1]}
+
+                # Now show the value
+                # Quote moArgs here, do not quote it later.
+                moShow "$moTag" "$moCurrent" "$moArgs"
+                ;;
+
+            '&'*)
+                # Unescaped
+                moStandaloneDenied moContent "${moContent[@]}"
+                moTrimWhitespace moTag "${moTag:1}"
+                moFullTagName moTag "$moCurrent" "$moTag"
+                moShow "$moTag" "$moCurrent"
+                ;;
+
+            *)
+                # Normal environment variable or function call
+                moStandaloneDenied moContent "${moContent[@]}"
+                moArgs=$moTag
+                moTag=${moTag%% *}
+                moTag=${moTag%%$'\t'*}
+                moArgs=${moArgs:${#moTag}}
+                moFullTagName moTag "$moCurrent" "$moTag"
+
+                # Quote moArgs here, do not quote it later.
+                moShow "$moTag" "$moCurrent" "$moArgs"
+                ;;
+        esac
+
+        moIsBeginning=$moNextIsBeginning
+        moSplit moContent "$moContent" '{{' '}}'
+    done
+
+    echo -n "${moContent[0]}"
+}
+
+
+# Internal: Process a partial.
+#
+# Indentation should be applied to the entire partial.
+#
+# This sends back the "is beginning" flag because the newline after a
+# standalone partial is consumed. That newline is very important in the middle
+# of content. We send back this flag to reset the processing loop's
+# `moIsBeginning` variable, so the software thinks we are back at the
+# beginning of a file and standalone processing continues to work.
+#
+# Prefix all variables.
+#
+# $1 - Name of destination variable. Element [0] is the content, [1] is the
+#      true/false flag indicating if we are at the beginning of content.
+# $2 - Content before the tag that was not yet written
+# $3 - Tag content
+# $4 - Content after the tag
+# $5 - true/false: is this the beginning of the content?
+# $6 - Current context name
+#
+# Returns nothing.
+moPartial() {
+    # Namespace variables here to prevent conflicts.
+    local moContent moFilename moIndent moIsBeginning moPartial moStandalone moUnindented
+
+    if moIsStandalone moStandalone "$2" "$4" "$5"; then
+        moStandalone=( $moStandalone )
+        echo -n "${2:0:${moStandalone[0]}}"
+        moIndent=${2:${moStandalone[0]}}
+        moContent=${4:${moStandalone[1]}}
+        moIsBeginning=true
+    else
+        moIndent=""
+        echo -n "$2"
+        moContent=$4
+        moIsBeginning=$5
+    fi
+
+    moTrimWhitespace moFilename "${3:1}"
+
+    # Execute in subshell to preserve current cwd and environment
+    (
+        # It would be nice to remove `dirname` and use a function instead,
+        # but that's difficult when you're only given filenames.
+        cd "$(dirname -- "$moFilename")" || exit 1
+        moUnindented="$(
+            moLoadFile moPartial "${moFilename##*/}" || exit 1
+            moParse "${moPartial}" "$6" true
+
+            # Fix bash handling of subshells and keep trailing whitespace.
+            # This is removed in moIndentLines.
+            echo -n "."
+        )" || exit 1
+        moIndentLines moPartial "$moIndent" "$moUnindented"
+        echo -n "$moPartial"
+    ) || exit 1
+
+    # If this is a standalone tag, the trailing newline after the tag is
+    # removed and the contents of the partial are added, which typically
+    # contain a newline. We need to send a signal back to the processing
+    # loop that the moIsBeginning flag needs to be turned on again.
+    #
+    # [0] is the content, [1] is that flag.
+    local "$1" && moIndirectArray "$1" "$moContent" "$moIsBeginning"
+}
+
+
+# Internal: Show an environment variable or the output of a function to
+# stdout.
+#
+# Limit/prefix any variables used.
+#
+# $1 - Name of environment variable or function
+# $2 - Current context
+# $3 - Arguments string if $1 is a function
+#
+# Returns nothing.
+moShow() {
+    # Namespace these variables
+    local moJoined moNameParts
+
+    if moIsFunction "$1"; then
+        CONTENT=$(moCallFunction "$1" "" "$3")
+        moParse "$CONTENT" "$2" false
+        return 0
+    fi
+
+    moSplit moNameParts "$1" "."
+
+    if [[ -z "${moNameParts[1]-}" ]]; then
+        if moIsArray "$1"; then
+            eval moJoin moJoined "," "\${$1[@]}"
+            echo -n "$moJoined"
+        else
+            # shellcheck disable=SC2031
+            if moTestVarSet "$1"; then
+                echo -n "${!1}"
+            elif [[ -n "${MO_FAIL_ON_UNSET-}" ]]; then
+                echo "Env variable not set: $1" >&2
+                exit 1
+            fi
+        fi
+    else
+        # Further subindexes are disallowed
+        eval "echo -n \"\${${moNameParts[0]}[${moNameParts[1]%%.*}]}\""
+    fi
+}
+
+
+# Internal: Split a larger string into an array.
+#
+# $1 - Destination variable
+# $2 - String to split
+# $3 - Starting delimiter
+# $4 - Ending delimiter (optional)
+#
+# Returns nothing.
+moSplit() {
+    local pos result
+
+    result=( "$2" )
+    moFindString pos "${result[0]}" "$3"
+
+    if [[ "$pos" -ne -1 ]]; then
+        # The first delimiter was found
+        result[1]=${result[0]:$pos + ${#3}}
+        result[0]=${result[0]:0:$pos}
+
+        if [[ -n "${4-}" ]]; then
+            moFindString pos "${result[1]}" "$4"
+
+            if [[ "$pos" -ne -1 ]]; then
+                # The second delimiter was found
+                result[2]="${result[1]:$pos + ${#4}}"
+                result[1]="${result[1]:0:$pos}"
+            fi
+        fi
+    fi
+
+    local "$1" && moIndirectArray "$1" "${result[@]}"
+}
+
+
+# Internal: Handle the content for a standalone tag.  This means removing
+# whitespace (not newlines) before a tag and whitespace and a newline after
+# a tag.  That is, assuming, that the line is otherwise empty.
+#
+# $1 - Name of destination "content" variable.
+# $2 - Content before the tag that was not yet written
+# $3 - Tag content (not used)
+# $4 - Content after the tag
+# $5 - true/false: is this the beginning of the content?
+#
+# Returns nothing.
+moStandaloneAllowed() {
+    local bytes
+
+    if moIsStandalone bytes "$2" "$4" "$5"; then
+        bytes=( $bytes )
+        echo -n "${2:0:${bytes[0]}}"
+        local "$1" && moIndirect "$1" "${4:${bytes[1]}}"
+    else
+        echo -n "$2"
+        local "$1" && moIndirect "$1" "$4"
+    fi
+}
+
+
+# Internal: Handle the content for a tag that is never "standalone".  No
+# adjustments are made for newlines and whitespace.
+#
+# $1 - Name of destination "content" variable.
+# $2 - Content before the tag that was not yet written
+# $3 - Tag content (not used)
+# $4 - Content after the tag
+#
+# Returns nothing.
+moStandaloneDenied() {
+    echo -n "$2"
+    local "$1" && moIndirect "$1" "$4"
+}
+
+
+# Internal: Determines if the named thing is a function or if it is a
+# non-empty environment variable.  When MO_FALSE_IS_EMPTY is set to a
+# non-empty value, then "false" is also treated is an empty value.
+#
+# Do not use variables without prefixes here if possible as this needs to
+# check if any name exists in the environment
+#
+# $1                - Name of environment variable or function
+# $2                - Current value (our context)
+# MO_FALSE_IS_EMPTY - When set to a non-empty value, this will say the
+#                     string value "false" is empty.
+#
+# Returns 0 if the name is not empty, 1 otherwise.  When MO_FALSE_IS_EMPTY
+# is set, this returns 1 if the name is "false".
+moTest() {
+    # Test for functions
+    moIsFunction "$1" && return 0
+
+    if moIsArray "$1"; then
+        # Arrays must have at least 1 element
+        eval "[[ \"\${#${1}[@]}\" -gt 0 ]]" && return 0
+    else
+        # If MO_FALSE_IS_EMPTY is set, then return 1 if the value of
+        # the variable is "false".
+        # shellcheck disable=SC2031
+        [[ -n "${MO_FALSE_IS_EMPTY-}" ]] && [[ "${!1-}" == "false" ]] && return 1
+
+        # Environment variables must not be empty
+        [[ -n "${!1-}" ]] && return 0
+    fi
+
+    return 1
+}
+
+# Internal: Determine if a variable is assigned, even if it is assigned an empty
+# value.
+#
+# $1 - Variable name to check.
+#
+# Returns true (0) if the variable is set, 1 if the variable is unset.
+moTestVarSet() {
+    [[ "${!1-a}" == "${!1-b}" ]]
+}
+
+
+# Internal: Trim the leading whitespace only.
+#
+# $1   - Name of destination variable
+# $2   - The string
+# $3   - true/false - trim front?
+# $4   - true/false - trim end?
+# $5-@ - Characters to trim
+#
+# Returns nothing.
+moTrimChars() {
+    local back current front last target varName
+
+    target=$1
+    current=$2
+    front=$3
+    back=$4
+    last=""
+    shift 4 # Remove target, string, trim front flag, trim end flag
+
+    while [[ "$current" != "$last" ]]; do
+        last=$current
+
+        for varName in "$@"; do
+            $front && current="${current/#$varName}"
+            $back && current="${current/%$varName}"
+        done
+    done
+
+    local "$target" && moIndirect "$target" "$current"
+}
+
+
+# Internal: Trim leading and trailing whitespace from a string.
+#
+# $1 - Name of variable to store trimmed string
+# $2 - The string
+#
+# Returns nothing.
+moTrimWhitespace() {
+    local result
+
+    moTrimChars result "$2" true true $'\r' $'\n' $'\t' " "
+    local "$1" && moIndirect "$1" "$result"
+}
+
+
+# Internal: Displays the usage for mo.  Pulls this from the file that
+# contained the `mo` function.  Can only work when the right filename
+# comes is the one argument, and that only happens when `mo` is called
+# with `$0` set to this file.
+#
+# $1 - Filename that has the help message
+#
+# Returns nothing.
+moUsage() {
+    grep '^#/' "${MO_ORIGINAL_COMMAND}" | cut -c 4-
+    echo ""
+    set | grep ^MO_VERSION=
+}
+
+
+# Save the original command's path for usage later
+MO_ORIGINAL_COMMAND="$(cd "${BASH_SOURCE[0]%/*}" || exit 1; pwd)/${BASH_SOURCE[0]##*/}"
+MO_VERSION="2.0.4"
+
+# If sourced, load all functions.
+# If executed, perform the actions as expected.
+if [[ "$0" == "${BASH_SOURCE[0]}" ]] || [[ -z "${BASH_SOURCE[0]}" ]]; then
+    mo "$@"
+fi