ksh interpreters not recognized as bash-like syntax

[mcandre]

Prerequisites

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Description

language-shellscript fails to highlight a script correctly as bash-like syntax, when the shebang line uses a ksh interpreter such as ksh, mksh, ksh88, pdksh, ksh93, oksh.

Steps to Reproduce

1. Write a script using a #!/bin/ksh shebang.
2. Save the script.
3. Close and reopen the script in Atom.

Expected behavior:

The script highlights just like basic (ba)sh code.

Actual behavior:

Only the shebang and a set command are syntax highlighted.

Reproduces how often: 100%

Versions

$ atom --version
Atom    : 1.34.0
Electron: 2.0.16
Chrome  : 61.0.3163.100
Node    : 8.9.3

Additional Information

macOS Mojave, in case that matters.

[lee-dohm]

The first-mate grammar supports ksh but the tree-sitter grammar does not. A workaround for now is to turn off "Use Tree Sitter Parsers" in the Core Settings in Settings View.

[mcandre]

Same for some other obscure shell interpreters, including posh. Gah, there are too many to handle!