✏️ Fix a typo about shebang

autoload/requirements.vim

@@ -0,0 +1,29 @@
+""
+" Refer https://github.com/vim/vim/blob/75e27d78f5370e7d2e0898326d9b080937e7b090/runtime/scripts.vim#L33-L71
+"
+" When a file's shebang is "pip install -r" or "pip-compile",
+" set its filetype to |requirements|.
+function! requirements#shebang() abort
+    let s:line1 = getline(1)
+
+    if s:line1 =~# "^#!"
+        if s:line1 =~# '^#!\s*\S*\<env\s'
+            let s:line1 = substitute(s:line1, '\S\+=\S\+', '', 'g')
+            let s:line1 = substitute(s:line1, '\(-[iS]\|--ignore-environment\|--split-string\)', '', '')
+            let s:line1 = substitute(s:line1, '\<env\s\+', '', '')
+        endif
+        if s:line1 =~# '^#!\s*\a:[/\\]'
+            let s:name = substitute(s:line1, '^#!.*[/\\]\(\i\+\).*', '\1', '')
+        elseif s:line1 =~# '^#!.*\<env\>'
+            let s:name = substitute(s:line1, '^#!.*\<env\>\s\+\(\i\+\).*', '\1', '')
+        elseif s:line1 =~# '^#!\s*[^/\\ ]*\>\([^/\\]\|$\)'
+            let s:name = substitute(s:line1, '^#!\s*\([^/\\ ]*\>\).*', '\1', '')
+        else
+            let s:name = substitute(s:line1, '^#!\s*\S*[/\\]\(\i\+\).*', '\1', '')
+        endif
+        if s:name =~# '^pip'
+            set ft=requirements
+        endif
+    endif
+endfunction
+" vim: et sw=4 ts=4 sts=4: