dict: Fully evaluate keys

The only restriction is keys must be string after evaluation. This fix
various inconsistencies.

2 files changed, 16 insertions, 16 deletions

diff --git a/docs/markdown/Syntax.md b/docs/markdown/Syntax.md
index b96e6e1..cf0516c 100644
--- a/docs/markdown/Syntax.md
+++ b/docs/markdown/Syntax.md
@@ -324,8 +324,8 @@ Dictionaries
 --
 
 Dictionaries are delimited by curly braces. A dictionary can contain an
-arbitrary number of key value pairs. Keys are required to be literal
-strings, values can be objects of any type.
+arbitrary number of key value pairs. Keys are required to be strings, values can
+be objects of any type. Prior to *0.53.0* keys were required to be literal strings.
 
 ```meson
 my_dict = {'foo': 42, 'bar': 'baz'}
@@ -359,6 +359,14 @@ if 'foo' not in my_dict
 endif
 ```
 
+*Since 0.53.0* Keys can be any expression evaluating to a string value, not limited
+to string literals any more.
+```meson
+d = {'a' + 'b' : 42}
+k = 'cd'
+d += {k : 43}
+```
+
 Function calls
 --
 
diff --git a/docs/markdown/snippets/add_dictionary_variable_key.md b/docs/markdown/snippets/add_dictionary_variable_key.md
index 373ce04..72294ae 100644
--- a/docs/markdown/snippets/add_dictionary_variable_key.md
+++ b/docs/markdown/snippets/add_dictionary_variable_key.md
@@ -1,17 +1,9 @@
-## Adding dictionary entry using string variable as key
-
-New dictionary entry can now be added using string variable as key, 
-in addition to using string literal as key.
+## Dictionary entry using string variable as key
 
+Keys can now be any expression evaluating to a string value, not limited
+to string literals any more.
 ```meson
-dict = {}
-
-# A variable to be used as a key
-key = 'myKey'
-
-# Add new entry using the variable
-dict += {key : 'myValue'}
-
-# Test that the stored value is correct 
-assert(dict[key] == 'myValue', 'Incorrect value retrieved from dictionary')
+d = {'a' + 'b' : 42}
+k = 'cd'
+d += {k : 43}
 ```