| 280 | | When the name of the terminal type contains a hyphen, only the part of |
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| 281 | | the name before the first hyphen is significant in choosing the library |
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| 282 | | name. Thus, terminal types @samp{aaa-48} and @samp{aaa-30-rv} both use |
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| 283 | | the @file{term/aaa} library. If necessary, the library can evaluate |
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| 284 | | @code{(getenv "TERM")} to find the full name of the terminal |
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| 285 | | type.@refill |
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| | 275 | The usual function of a terminal-specific library is to enable |
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| | 276 | special keys to send sequences that Emacs can recognize. It may also |
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| | 277 | need to set or add to @code{function-key-map} if the Termcap or |
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| | 278 | Terminfo entry does not specify all the terminal's function keys. |
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| | 279 | @xref{Terminal Input}. |
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| | 280 | |
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| | 281 | When the name of the terminal type contains a hyphen, and no library |
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| | 282 | is found whose name is identical to the terminal's name, Emacs strips |
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| | 283 | from the terminal's name the last hyphen and everything that follows |
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| | 284 | it, and tries again. This process is repeated until Emacs finds a |
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| | 285 | matching library or until there are no more hyphens in the name (the |
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| | 286 | latter means the terminal doesn't have any library specific to it). |
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| | 287 | Thus, for example, if there are no @samp{aaa-48} and @samp{aaa-30} |
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| | 288 | libraries, Emacs will try the same library @file{term/aaa.el} for |
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| | 289 | terminal types @samp{aaa-48} and @samp{aaa-30-rv}. If necessary, the |
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| | 290 | library can evaluate @code{(getenv "TERM")} to find the full name of |
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| | 291 | the terminal type.@refill |
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