Julia v1.7 Release Notes
========================

New language features
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* `count` and `findall` now accept an `AbstractChar` argument to search for a character in a string ([#38675]).

Language changes
----------------


Compiler/Runtime improvements
-----------------------------


Command-line option changes
---------------------------


Multi-threading changes
-----------------------


Build system changes
--------------------


New library functions
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* Two argument methods `findmax(f, domain)`, `argmax(f, domain)` and the corresponding `min` versions ([#27613]).
* `isunordered(x)` returns true if `x` is value that is normally unordered, such as `NaN` or `missing`.

New library features
--------------------


Standard library changes
------------------------

* `islowercase` and `isuppercase` are now compliant with the Unicode lower/uppercase categories ([#38574]).

#### Package Manager


#### LinearAlgebra


#### Markdown


#### Printf


#### Random


#### REPL


#### SparseArrays


#### Dates


#### Statistics


#### Sockets


#### Distributed


#### UUIDs


#### Mmap


Deprecated or removed
---------------------


External dependencies
---------------------


Tooling Improvements
---------------------


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