This feature has been around for a long time in other languages. Mainly for
automatic insertion of values for string formatting, such as template strings
in Python3 or JavaScript (maybe with different names).<br/><br/>Below are some
examples of template strings.<br/><br/>For example, after Python 3.6+, Python
can format strings like this:<br/><br/>>>> name =
"Fred"<br/>>>> f"He said his name is
{name!r}."<br/>"He said his name is 'Fred'."<br/>>>>
f"He said his name is {repr(name)}." # repr() is equivalent to
!r<br/>"He said his name is 'Fred'."<br/>>>> width =
10<br/>>>> precision = 4<br/>>>> value =
decimal.Decimal("12.34567")<br/>>>> f"result:
{value:{width}.{precision}}" # nested fields<br/>'result:
12.35'<br/>>>> today = datetime(year=2017, month=1,
day=27)<br/>>>> f"{today:%B %d, %Y}" # using date format
specifier<br/>'January 27, 2017'<br/>>>> f"{today=:%B %d,
%Y}" # using date format specifier and debugging<br/>'today=January 27,
2017'<br/>>>> number = 1024<br/>>>> f"{number:#0x}"
# using integer format specifier<br/>'0x400'<br/>>>> foo =
"bar"<br/>>>> f"{ foo = }" # preserves
whitespace<br/>" foo = 'bar'"<br/>>>> line = "The
mill's closed"<br/>>>> f"{line = }"<br/>'line =
"The mill\'s closed"'<br/>>>> f"{line =
:20}"<br/>"line = The mill's closed "<br/>>>>
f"{line = !r:20}"<br/>'line = "The mill\'s closed"
'<br/><br/>output {}:<br/><br/>>>> f"Out:
{{0}}"<br/><br/>Multi-line
text:<br/><br/>count=1<br/>out=f"""<br/>Count is:
{count}<br/>Count is: {count}<br/>Count is:
{count}<br/>"""<br/><br/>example from: <a
href="https://docs.python.org/3/reference/lexical_analysis.html#f-strings">https://docs.python.org/3/reference/lexical_analysis.html#f-strings</a><br/><br/>JavaScript:<br/><br/>Template
strings also exist in JavaScript, e.g.:<br/><br/>// Untagged, these create
strings:<br/>`string text`<br/><br/>`string text line 1<br/> string text line
2`<br/><br/>let expression=",";<br/><br/>`string text ${expression}
string text`<br/><br/>Reference address: <a
href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals">https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals</a><br/><br/>If
you want Java to optimize the way of formatting strings in Text Blocks, you
can refer to the implementation of Python or JavaScript.<br/><br/><html>
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