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$ echo profile=default > .ocamlformat
One of '--impl', '--intf' or '--name' is required when the input is read from stdin:
$ echo 'let x = 1' | ocamlformat - 2>/dev/null
[1]
$ echo 'let x = 1' | ocamlformat --inplace - 2>/dev/null
[1]
Nominal cases:
$ echo 'let x = 1' | ocamlformat --impl -
let x = 1
$ echo 'val x : int' | ocamlformat --intf -
val x : int
The kind of syntax --impl/--intf is inferred from the name:
$ echo 'let x = 1' | ocamlformat --name a.ml -
let x = 1
The syntax cannot be inferred if the extension of the file is unsupported:
$ ocamlformat --name a.cpp - 2>/dev/null
[1]
Cannot specify files with stdin:
$ echo 'let x = 1' > a.ml
$ ocamlformat a.ml - 2>/dev/null
[1]
The input is named after the '--name' argument in formatting error messages:
$ echo 'let y =' | ocamlformat --name foo.ml -
ocamlformat: ignoring "foo.ml" (syntax error)
File "foo.ml", line 2, characters 0-0:
Error: Syntax error
[1]
Bad kind of syntax --impl/--intf:
$ echo 'module X : S' | ocamlformat --impl -
ocamlformat: ignoring "<standard input>" (syntax error)
File "<standard input>", line 2, characters 0-0:
Error: Syntax error
[1]
Not specifying --impl/--intf (inferred from --name) resulting in a syntax error:
$ echo 'module X : S' | ocamlformat --name foo.ml -
ocamlformat: ignoring "foo.ml" (syntax error)
File "foo.ml", line 2, characters 0-0:
Error: Syntax error
[1]
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