Sort lines, reword and fix wader#23 and wader#25

README.md

@@ -2,59 +2,64 @@
 
 ### Pure league
 
-- No shell features involved
-- Only output on stdout
+- No shell features are involved.
+- Only outputs to `stdout`.
 
 ```sh
-cat file.txt
 awk 1 file.txt
-paste file.txt
-pv -q file.txt
-grep '' file.txt
-sort -m file.txt
-sed -n p file.txt
-cut -b 1- file.txt
-jq -rRs . file.txt
-perl -pe1 file.txt
-sed '/*/p' file.txt
-tail -n +1 file.txt
-head -n -0 file.txt (GNU head)
-gcc -E -P -xc file.txt
+bat --color=never --style=plain file.txt
+cat file.txt
 comm file.txt /dev/null (BSD comm)
 cp file.txt /dev/stdout
-scp file.txt /dev/stdout
-w3m -dump_source file.txt
+curl file:///proc/self/cwd/file.txt
+cut -b 1- file.txt
 dd status=none if=file.txt (GNU dd)
+diff --line-format=%L /dev/null file.txt
+emacs -Q --batch --eval '(princ (with-temp-buffer (insert-file-contents "file.txt") (buffer-string)))'
+ffmpeg -v quiet -f data -i file.txt -map 0:0 -c text -f data -
+git -P grep --no-index -h ^ file.txt
+grep '' file.txt
+head -n -0 file.txt (GNU head)
 hexdump -ve '"%c"' file.txt
+jq -rRs . file.txt
 openssl enc -none -in file.txt
-curl file:///proc/self/cwd/file.txt
-git -P grep --no-index -h ^ file.txt
-bat --color=never --style=plain file.txt
-diff --line-format=%L /dev/null file.txt
+paste file.txt
+perl -pe1 file.txt
+pv -q file.txt
 python -c 'print(open("file.txt").read()[:-1])'
+scp file.txt /dev/stdout
+sed -n p file.txt
+sort -m file.txt
+tail -n +1 file.txt
 vim -es --clean '+w! /dev/stdout' '+q!' file.txt
-ffmpeg -v quiet -f data -i file.txt -map 0:0 -c text -f data -
-emacs -Q --batch --eval '(princ (with-temp-buffer (insert-file-contents "file.txt") (buffer-string)))'
+w3m -dump_source file.txt
 ```
 
 ### Pipe league
 
+- Needs `<` and/or `|` piping to work.
+
 ```sh
+echo ',p' | ed -s file.txt
+rev file.txt | rev
 tee < file.txt
 tr a a < file.txt
-rev file.txt | rev
-echo ',p' | ed -s file.txt
+```
+
+### Sensitive league
+
+- Does not handle every character.
+
+```sh
+gcc -E -P -xc file.txt
+sed '/*/p' file.txt
 ```
 
 ### Error league
 
-- Same as pure but can have errors on stdout and stderr
+- Same as "Pure league", but errors on `stdout` and/or `stderr` are acceptable.
 
 ```sh
 dd if=file.txt
 gcc -xc file.txt
 ```
-
-### Junk league
-
-- Same as error but most bytes from the file