FILE: C:\Program Files\Git\usr\share\vim\vim91\syntax\idlang.vim

--
" Interactive Data Language syntax file (IDL, too  [:-)]
" Maintainer: Aleksandar Jelenak 
" Created By: Hermann Rochholz 
" Last Change: 2011 Apr 11
"  2024 Sep 10 by Vim Project: update syntax script, #15419

" Remove any old syntax stuff hanging around
" quit when a syntax file was already loaded
if exists("b:current_syntax")
  finish
endif

syntax case ignore

syn match idlangStatement "^\s*pro\s"
syn match idlangStatement "^\s*function\s"
syn keyword idlangStatement return continue mod do break
syn keyword idlangStatement compile_opt forward_function goto
syn keyword idlangStatement begin common end of
syn keyword idlangStatement inherits on_error on_ioerror begin

syn keyword idlangConditional if else then for while case switch
syn keyword idlangConditional endcase endelse endfor endswitch
syn keyword idlangConditional endif endrep endwhile repeat until

syn match idlangOperator "\ and\ "
syn match idlangOperator "\ eq\ "
syn match idlangOperator "\ ge\ "
syn match idlangOperator "\ gt\ "
syn match idlangOperator "\ le\ "
syn match idlangOperator "\ lt\ "
syn match idlangOperator "\ ne\ "
syn match idlangOperator /\(\ \|(\)not\ /hs=e-3
syn match idlangOperator "\ or\ "
syn match idlangOperator "\ xor\ "

syn keyword idlangStop stop pause

syn match idlangStrucvar "\h\w*\(\.\h\w*\)\+"
syn match idlangStrucvar "[),\]]\(\.\h\w*\)\+"hs=s+1

syn match idlangSystem "\!\a\w*\(\.\w*\)\="

syn match idlangKeyword "\([(,]\s*\(\$\_s*\)\=\)\@<=/\h\w*"
syn match idlangKeyword "\([(,]\s*\(\$\_s*\)\=\)\@<=\h\w*\s*="

syn keyword idlangTodo contained TODO

syn region idlangString start=+"+ end=+"+
syn region idlangString start=+'+ end=+'+

syn match idlangPreCondit "^\s*@\w*\(\.\a\{3}\)\="

syn match idlangRealNumber "\<\d\+\(\.\=\d*e[+-]\=\d\+\|\.\d*d\|\.\d*\|d\)"
syn match idlangRealNumber "\.\d\+\(d\|e[+-]\=\d\+\)\="

syn match idlangNumber "\<\.\@!\d\+\.\@!\(b\|u\|us\|s\|l\|ul\|ll\|ull\)\=\>"

syn match  idlangComment "[\;].*$" contains=idlangTodo

syn match idlangContinueLine "\$\s*\($\|;\)"he=s+1 contains=idlangComment
syn match idlangContinueLine "&\s*\(\h\|;\)"he=s+1 contains=ALL

syn match  idlangDblCommaError "\,\s*\,"

" List of standard routines as of IDL version 5.4.
syn match idlangRoutine "EOS_\a*"
syn match idlangRoutine "HDF_\a*"
syn match idlangRoutine "CDF_\a*"
syn match idlangRoutine "NCDF_\a*"
syn match idlangRoutine "QUERY_\a*"
syn match idlangRoutine "\--