added new stdlib module 'strformat'; refs #5600; refs #6507

changelog.md

@@ -136,3 +136,6 @@ This now needs to be written as:
   Types that shadow procs and vice versa are marked as ambiguous (bug #6693).
 - ``yield`` (or ``await`` which is mapped to ``yield``) never worked reliably
   in an array, seq or object constructor and is now prevented at compile-time.
+- For string formatting / interpolation a new module
+  called [strformat](https://nim-lang.org/docs/strformat.html) has been added
+  to the stdlib.

doc/lib.rst

@@ -102,6 +102,10 @@ String handling
   case of a string, splitting a string into substrings, searching for
   substrings, replacing substrings.
 
+* `strformat <strformat.html>`_
+  Macro based standard string interpolation / formatting. Inpired by
+  Python's ```f``-strings.
+
 * `strmisc <strmisc.html>`_
   This module contains uncommon string handling operations that do not
   fit with the commonly used operations in strutils.