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+" Vim syntax file
+" Language: Expect
+" Maintainer: Ralph Jennings <knowbudy@oro.net>
+" Last Change: 2001 May 09
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+ syntax clear
+elseif exists("b:current_syntax")
+ finish
+endif
+
+" Reserved Expect variable prefixes.
+syn match expectVariables "\$exp[a-zA-Z0-9_]*\|\$inter[a-zA-Z0-9_]*"
+syn match expectVariables "\$spawn[a-zA-Z0-9_]*\|\$timeout[a-zA-Z0-9_]*"
+
+" Normal Expect variables.
+syn match expectVariables "\$env([^)]*)"
+syn match expectVariables "\$any_spawn_id\|\$argc\|\$argv\d*"
+syn match expectVariables "\$user_spawn_id\|\$spawn_id\|\$timeout"
+
+" Expect variable arrays.
+syn match expectVariables "\$\(expect\|interact\)_out([^)]*)" contains=expectOutVar
+
+" User defined variables.
+syn match expectVariables "\$[a-zA-Z_][a-zA-Z0-9_]*"
+
+" Reserved Expect command prefixes.
+syn match expectCommand "exp_[a-zA-Z0-9_]*"
+
+" Normal Expect commands.
+syn keyword expectStatement close debug disconnect
+syn keyword expectStatement exit exp_continue exp_internal exp_open
+syn keyword expectStatement exp_pid exp_version
+syn keyword expectStatement fork inter_return interpreter
+syn keyword expectStatement log_file log_user match_max overlay
+syn keyword expectStatement parity remove_nulls return
+syn keyword expectStatement send send_error send_log send_user
+syn keyword expectStatement sleep spawn strace stty system
+syn keyword expectStatement timestamp trace trap wait
+
+" Tcl commands recognized and used by Expect.
+syn keyword expectCommand proc
+syn keyword expectConditional if else
+syn keyword expectRepeat while for foreach
+
+" Expect commands with special arguments.
+syn keyword expectStatement expect expect_after expect_background nextgroup=expectExpectOpts
+syn keyword expectStatement expect_before expect_user interact nextgroup=expectExpectOpts
+
+syn match expectSpecial contained "\\."
+
+" Options for "expect", "expect_after", "expect_background",
+" "expect_before", "expect_user", and "interact".
+syn keyword expectExpectOpts default eof full_buffer null return timeout
+
+syn keyword expectOutVar contained spawn_id seconds seconds_total
+syn keyword expectOutVar contained string start end buffer
+
+" Numbers (Tcl style).
+syn case ignore
+ syn match expectNumber "\<\d\+\(u\=l\=\|lu\|f\)\>"
+ "floating point number, with dot, optional exponent
+ syn match expectNumber "\<\d\+\.\d*\(e[-+]\=\d\+\)\=[fl]\=\>"
+ "floating point number, starting with a dot, optional exponent
+ syn match expectNumber "\.\d\+\(e[-+]\=\d\+\)\=[fl]\=\>"
+ "floating point number, without dot, with exponent
+ syn match expectNumber "\<\d\+e[-+]\=\d\+[fl]\=\>"
+ "hex number
+ syn match expectNumber "0x[0-9a-f]\+\(u\=l\=\|lu\)\>"
+ "syn match expectIdentifier "\<[a-z_][a-z0-9_]*\>"
+syn case match
+
+syn region expectString start=+"+ end=+"+ contains=expectVariables,expectSpecial
+
+" Are these really comments in Expect? (I never use it, so I'm just guessing).
+syn keyword expectTodo contained TODO
+syn match expectComment "#.*$" contains=expectTodo
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_expect_syntax_inits")
+ if version < 508
+ let did_expect_syntax_inits = 1
+ command -nargs=+ HiLink hi link <args>
+ else
+ command -nargs=+ HiLink hi def link <args>
+ endif
+
+ HiLink expectVariables Special
+ HiLink expectCommand Function
+ HiLink expectStatement Statement
+ HiLink expectConditional Conditional
+ HiLink expectRepeat Repeat
+ HiLink expectExpectOpts Keyword
+ HiLink expectOutVar Special
+ HiLink expectSpecial Special
+ HiLink expectNumber Number
+
+ HiLink expectString String
+
+ HiLink expectComment Comment
+ HiLink expectTodo Todo
+ "HiLink expectIdentifier Identifier
+
+ delcommand HiLink
+endif
+
+let b:current_syntax = "expect"
+
+" vim: ts=8