Add `_jsonstr` helper for JSON one-line strings

README.md

@@ -90,6 +90,12 @@ to `$PAGER` (default: more).
 
 Also see `readme` and `usage` commands.
 
+### The `json` Command
+
+Converts input into JSON string using `jq` containing only escaped
+(`
+`) line returns.
+
 ### Generate `README.md` File
 
 ```
@@ -106,5 +112,5 @@ Displays a summary of usage.
 
 ----
 
-*Autogenerated Tue Aug 10 07:37:40 PM EDT 2021*
+*Autogenerated Tue Aug 10 09:32:13 PM EDT 2021*
 

command

@@ -96,6 +96,14 @@ command_bar() {
   echo "would bar: $*"
 }
 
+help[json]='
+Converts input into JSON string using `jq` containing only escaped
+(`\n`) line returns.'
+
+command_json() {
+  _jsonstr "$@"
+}
+
 command__hidden() {
   _filter "$@" && return $?
   echo "would run _hidden: $*"
@@ -186,7 +194,6 @@ command_readme() {
   echo -e "----\n\n*Autogenerated $(date)*\n"
 }
 
-
 _help_title() {
   _filter "$@" && return $?;
   local name="$1"
@@ -202,6 +209,11 @@ _trim() {
   echo -e "${it%"${it##*[![:space:]]}"}"
 }
 
+_jsonstr() {
+  _buffer "$@" && return $?
+  jq -MRsc <<< "$1"
+}
+
 _have(){ type "$1" &>/dev/null; }
 
 _filter(){