diff --git a/gcc/cobol/posix/README.md b/gcc/cobol/posix/README.md
index 57ce563a76e61ce8db09fab444c17c716ede8096..f126a8be990e5c12e07d68e1b9d794e481c46370 100644
--- a/gcc/cobol/posix/README.md
+++ b/gcc/cobol/posix/README.md
@@ -8,33 +8,33 @@ there, of course, via the `CALL` statement.  But that's not very
 convenient, and offers no parameter validation.
 
 GCC COBOL as of this writing works *only* in a Posix environment. This
-directory exists to make using OS-provided functions a bit more convenient. 
+directory exists to make using OS-provided functions a bit more convenient.
 
 ## Contents
 
 The machine-shop tools are in this directory.  Things directly usable
 by a COBOL program are in the `udf/` and `c/` directories.
 
-- `scrape.awk` extracts function prototypes from the SYNOPSIS of a man page. 
+- `scrape.awk` extracts function prototypes from the SYNOPSIS of a man page.
 - `udf-gen` reads function declarations and, for each one, produces a
   COBOL User Defined Function (UDF) that calls the function.
 - `Makefile` produces a list of function prototypes from Section 2 of
-  the manual.  
+  the manual.
 - `c/` contains helper functions in C that cannot be expressed in
   COBOL. For example, the C `errno` "variable" may be a macro, and may
   not be declared except by `errno.h`, which is not accessible to
-  COBOL.  
-- `udf/Makefile` builds some infrastructure and examples: 
+  COBOL.
+- `udf/Makefile` builds some infrastructure and examples:
   - `udf/libposix-errno.so`, to get at the C `errno` variable and its
     string representation.
-  - `udf/posix-mkdir.cbl` automatically from the manual, using `udf-gen`. 
-  - `udf/t/errno` and 
-  - `udf/t/exit` as examples of COBOL programs using these Posix UDFs. 
+  - `udf/posix-mkdir.cbl` automatically from the manual, using `udf-gen`.
+  - `udf/t/errno` and
+  - `udf/t/exit` as examples of COBOL programs using these Posix UDFs.
 
 ## Prerequisites
 
 `udf-gen` is a Python program that imports
-the [PLY pycparser module](http://www.dabeaz.com/ply/) module, which must be installed. 
+the [PLY pycparser module](http://www.dabeaz.com/ply/) module, which must be installed.
 
 `udf-gen` is lightly documented, use `udf-gen --help`. It can be a
 little tedious to set up the first time, but if you want to use more a
@@ -42,7 +42,7 @@ few functions, it will be faster than doing the work by hand.
 
 ## Limitations
 
-`udf-gen` does not 
+`udf-gen` does not
 
 - generate a working UDF for function parameters of type `struct`,
   such as is used by **stat**(2).  This is because the information is
@@ -52,14 +52,14 @@ few functions, it will be faster than doing the work by hand.
 
 None of this is particularly difficult; it's just a matter of time and
 need. The `scrape.awk` script finds 560 functions in the Ubuntu LTS
-22.04 manual.  Which of those is important is for users to decide. 
+22.04 manual.  Which of those is important is for users to decide.
 
 ## Other Options
 
 IBM and Microfocus both supply intrinsic functions to interface with
-the OS, each in their own way. GnuCOBOL implements some of those functions. 
+the OS, each in their own way. GnuCOBOL implements some of those functions.
 
-## Portability 
+## Portability
 
 The UDF produced by `udf-gen` is pure ISO COBOL.  The code should be
 compilable by any ISO COBOL compiler.