Displaying the language
The following commands help you find out which language is the
working language, and also what language source files were written in.
Display the current working language. This is the language you
can use with commands such as `print' to build and compute
expressions that may involve variables in your program.
Display the source language for this frame. This language becomes
the working language if you use an identifier from this frame.
Information about a frame Frame Info, to identify the other
information listed here.
Display the source language of this source file. Examining
the Symbol Table Symbols, to identify the other information
In unusual circumstances, you may have source files with extensions
not in the standard list. You can then set the extension associated
with a language explicitly:
`set extension-language .EXT LANGUAGE'
Set source files with extension .EXT to be assumed to be in the
source language LANGUAGE.
List all the filename extensions and the associated languages.
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