reorganize and elaborate on unicode

content/strings.md

@@ -0,0 +1,45 @@
+---
+title: Strings
+---
+# Strings
+
+``` nimrod
+echo "words words words ⚑"
+echo """
+<html>
+  <head>
+  </head>\n\n
+
+  <body>
+  </body>
+</html> """
+
+proc re(s: string): string = s
+
+echo r" "" "
+echo re"\b[a-z]++\b"
+```
+``` console
+$ nimrod c -r strings.nim
+words words words ⚑
+<html>
+  <head>
+  <head/>\n\n
+
+  <body>
+  <body/>
+<html/>
+ "
+\b[a-z]++\b
+```
+
+There are several types of strings literals:
+
+ - Quoted Strings: Created by wrapping the body in triple quotes, they never interpret escape codes
+ - Raw Strings: created by prefixing the string with an `r`. There are no escape sequences don't work, except for `"`, which can be escaped as `""`
+ - Proc Strings: raw strings, but the method name that prefixes the string is called
+
+## A note about unicode
+Unicode symbols are allowed in strings, but are not treated in any special way, so if you want count glyphs or uppercase unicode symbols, you must use the `unicode` module.
+
+Strings are generally considered to be encoded as UTF-8, so because of unicode's backwards compatibility, can be treated exactly as ASCII, with all values above 127 ignored.