Re: Regular Expression Explanation for 'function.lang'

Hello,

There is a 'Wikipedia' page for IDL located at:
http://en.wikipedia.org/wiki/IDL_(programming_language)

There is a complete IDL programming manual located:

http://idlastro.gsfc.nasa.gov/idl_html_help/Programming_in_IDL.html

Normally procedures an functions are called on one line unless
the line exceeds 64 (?) characters. In that case the line may use
'$' symbol to continue the call statement on the next line.

Procedures do not return values, hence they are never called
as variables.

Functions can happen in-line anywhere.

Commas are also used as delimiters for array members in IDL.

Below is the language definition for rsiidl.lang .


'procedure.lang' is just a duplicate of 'function.lang'
at this point.

Best Regards,


Peter

//////////RSIIDL.LANG BEGIN///////////////////////////

preproc = "include|include_once|require|require_once"

comment start ";"

include "number.lang"

string delim "\"" "\"" escape "\\" multiline
string delim "'" "'"  escape "\\" multiline

keyword = 
"COMMON|COMPILE_OPT|PRO|FUNCTION|BEGIN|BREAK|END|GOTO|IF|THEN|ELSE|ENDIF|CASE|OF|ENDCASE|SWITCH|ENDSWITCH|FOR|DO|CONTINUE|ENDFOR|WHILE|ENDWHILE|LT|LE|EQ|NE|GE|GT|>|<|NOT|OR|XOR|AND|MOD|FORWARD_FUNCTION|ON_ERROR|ON_IOERROR|REPEAT|UNTIL|.COMPILE|.CONTINUE|.EDIT|.FULL_RESET_SESSION|.GO|.OUT|.RESET_SESSION|.RETURN|.RNEW|.RUN|.SKIP|.STEP|.STEPOVER|.TRACE|A_CORRELATE|ABS|ACOS|ADAPT_HIST_EQUAL|ALOG|ALOG10|AMOEBA|ANNOTATE|APP_USER_DIR|APP_USER_DIR_QUERY|ARG_PRESENT|ARRAY_EQUAL|ARRAY_INDICES|ARROW|ASCII_TEMPLATE|ASIN|ASSOC|ATAN|BAR_PLOT|BESELI|BESELJ|BESELK|BESELY 
|BETA |BILINEAR |BIN_DATE |BINARY_TEMPLATE |BINDGEN |BINOMIAL |BLK_CON 
|BOX_CURSOR |BROYDEN |BYTARR |BYTE |BYTSCL |C_CORRELATE |CALDAT 
|CALENDAR |CALL_EXTERNAL |CALL_FUNCTION |CALL_METHOD |CEIL |CHEBYSHEV 
|CHECK_MATH |CHISQR_CVF |CHISQR_PDF |CHOLSOL |CINDGEN |CIR_3PNT 
|CLUST_WTS |CLUSTER |CLUSTER_TREE |COLOR_QUAN |COLORMAP_APPLICABLE 
|COMFIT |COMPLEX |COMPLEXARR |COMPLEXROUND |COMPUTE_MESH_NORMALS |COND 
|CONGRID |CONJ |CONVERT_COORD |CONVOL |COORD2TO3 |CORRELATE |COS |COSH 
|CRAMER |CREATE_CURSOR |CREATE_STRUCT |CREATE_VIEW |CROSSP |CRVLENGTH 
|CT_LUMINANCE |CTI_TEST |CURVEFIT |CV_COORD |CVTTOBM |CW_ANIMATE 
|CW_ANIMATE_GETP |CW_ANIMATE_LOAD |CW_ANIMATE_RUN |CW_ARCBALL |CW_BGROUP 
|CW_CLR_INDEX |CW_COLORSEL |CW_DEFROI |CW_FIELD |CW_FILESEL |CW_FORM 
|CW_FSLIDER |CW_LIGHT_EDITOR |CW_LIGHT_EDITOR_GET |CW_LIGHT_EDITOR_SET 
|CW_ORIENT |CW_PALETTE_EDITOR |CW_PALETTE_EDITOR_GET 
|CW_PALETTE_EDITOR_SET |CW_PDMENU |CW_RGBSLIDER |CW_TMPL |CW_ZOOM 
|DBLARR |DCINDGEN |DCOMPLEX |DCOMPLEXARR |DEFROI |DENDRO_PLOT 
|DENDROGRAM |DERIV |DERIVSIG |DETERM |DIAG_MATRIX |DIALOG_MESSAGE 
|DIALOG_PICKFILE |DIALOG_PRINTERSETUP |DIALOG_PRINTJOB 
|DIALOG_READ_IMAGE |DIALOG_WRITE_IMAGE |DIGITAL_FILTER |DILATE |DINDGEN 
|DISSOLVE |DIST |DISTANCE_MEASURE |DOC_LIBRARY |DOUBLE |EFONT |EIGENQL 
|EIGENVEC |ELMHES |EOF |ERF |ERFC |ERFCX |ERODE |ERRPLOT |EXECUTE |EXP 
|EXPAND |EXPAND_PATH |EXPINT |EXTRAC |EXTRACT_SLICE |F_CVF |F_PDF 
|FACTORIAL |FFT |FILE_BASENAME |FILE_DIRNAME |FILE_EXPAND_PATH 
|FILE_INFO |FILE_LINES |FILE_LINK |FILE_READLINK |FILE_SAME |FILE_SEARCH 
|FILE_TEST |FILE_WHICH |FILEPATH |FINDGEN |FINITE |FIX |FLICK |FLOAT 
|FLOOR |FLOW3 |FLTARR |FORMAT_AXIS_VALUES |FSTAT |FULSTR |FUNCT |FV_TEST 
|FX_ROOT |FZ_ROOTS |GAMMA |GAMMA_CT |GAUSS_CVF |GAUSS_PDF |GAUSS2DFIT 
|GAUSSFIT |GAUSSINT |GET_DRIVE_LIST |GET_KBRD |GET_LUN |GET_SCREEN_SIZE 
|GETENV |GRID_TPS |GRID3 |GRIDDATA |GS_ITER |H_EQ_CT |H_EQ_INT 
|H5_BROWSER |HANNING |HDF_BROWSER |HDF_READ |HILBERT |HIST_2D 
|HIST_EQUAL |HISTOGRAM |HLS |HOUGH |HQR |HSV |IBETA |ICONTOUR |IDENTITY 
|IDL_VALIDNAME |IDLITSYS_CREATETOOL |IGAMMA |IIMAGE |IMAGE_CONT 
|IMAGINARY |IMAP |INDGEN |INT_2D |INT_3D |INT_TABULATED |INTARR 
|INTERPOL |INTERPOLATE |INVERT |IOCTL |IPLOT |ISHFT |ISURFACE |ITCURRENT 
|ITDELETE |ITGETCURRENT |ITREGISTER |ITRESET |ITRESOLVE |IVOLUME |JULDAY 
|KEYWORD_SET |KRIG2D |KURTOSIS |KW_TEST |L64INDGEN |LA_CHOLMPROVE 
|LA_CHOLSOL |LA_DETERM |LA_EIGENPROBLEM |LA_EIGENQL |LA_EIGENVEC 
|LA_ELMHES |LA_GM_LINEAR_MODEL |LA_HQR |LA_INVERT 
|LA_LEAST_SQUARE_EQUALITY |LA_LEAST_SQUARES |LA_LINEAR_EQUATION 
|LA_LUMPROVE |LA_LUSOL |LA_TRIMPROVE |LA_TRISOL |LABEL_DATE 
|LABEL_REGION |LADFIT |LAGUERRE |LEEFILT |LEGENDRE |LINBCG |LINDGEN 
|LINFIT |LL_ARC_DISTANCE |LMFIT |LMGR |LNGAMMA |LNP_TEST |LOADCT 
|LOCALE_GET |LOGICAL_AND |LOGICAL_OR |LOGICAL_TRUE |LON64ARR |LONARR 
|LONG |LONG64 |LSODE |LU_COMPLEX |LUMPROVE |LUSOL |M_CORRELATE |MACHAR 
|MAKE_ARRAY |MAP_2POINTS |MAP_CONTINENTS |MAP_GRID |MAP_IMAGE |MAP_PATCH 
|MAP_PROJ_FORWARD |MAP_PROJ_IMAGE |MAP_PROJ_INFO |MAP_PROJ_INIT 
|MAP_PROJ_INVERSE |MAP_SET |MATRIX_MULTIPLY |MATRIX_POWER |MAX |MD_TEST 
|MEAN |MEANABSDEV |MEDIAN |MEMORY |MESH_CLIP |MESH_DECIMATE 
|MESH_ISSOLID |MESH_MERGE |MESH_NUMTRIANGLES |MESH_OBJ |MESH_SMOOTH 
|MESH_SURFACEAREA |MESH_VALIDATE |MESH_VOLUME |MESSAGE |MIN 
|MIN_CURVE_SURF |MK_HTML_HELP |MODIFYCT |MOMENT |MORPH_CLOSE 
|MORPH_DISTANCE |MORPH_GRADIENT |MORPH_HITORMISS |MORPH_OPEN |MORPH_THIN 
|MORPH_TOPHAT |MPEG_CLOSE |MPEG_OPEN |MPEG_PUT |MPEG_SAVE |MULTI 
|N_ELEMENTS |N_PARAMS |N_TAGS |NEWTON |NORM |OBJ_CLASS |OBJ_ISA |OBJ_NEW 
|OBJ_VALID |OBJARR |OPEN |OPLOTERR |P_CORRELATE |PATH_SEP |PCOMP 
|PLOT_3DBOX |PLOT_FIELD |PLOTERR |PNT_LINE |POLAR_CONTOUR |POLAR_SURFACE 
|POLY |POLY_2D |POLY_AREA |POLY_FIT |POLYFILLV |POLYSHADE |POLYWARP 
|POPD |PRIMES |PRODUCT |PROFILE |PROJECT_VOL |PS_SHOW_FONTS |PSAFM 
|PSEUDO |PTR_NEW |PTR_VALID |PTRARR |QGRID3 |QROMB |QROMO |QSIMP 
|QUERY_BMP |QUERY_DICOM |QUERY_GIF |QUERY_IMAGE |QUERY_JPEG 
|QUERY_JPEG2000 |QUERY_MRSID |QUERY_PICT |QUERY_PNG |QUERY_PPM 
|QUERY_SRF |QUERY_TIFF |QUERY_WAV |R_CORRELATE |R_TEST |RADON |RANDOMN 
|RANDOMU |RANKS |RDPIX |READ_ASCII |READ_BINARY |READ_BMP |READ_DICOM 
|READ_IMAGE |READ_JPEG2000 |READ_MRSID |READ_PNG |READ_SPR |READ_SYLK 
|READ_TIFF |READ_WAV |READ_XWD |REAL_PART |REBIN |RECALL_COMMANDS 
|RECON3 |REFORM |REGION_GROW |REGRESS |REPLICATE |RETALL |REVERSE |RK4 
|ROBERTS |ROT |ROTATE |ROUND |ROUTINE_INFO |RS_TEST |S_TEST |SAVGOL 
|SCOPE_LEVEL |SCOPE_VARFETCH |SCOPE_VARNAME |SEARCH2D |SEARCH3D |SFIT 
|SHIFT |SHMDEBUG |SHMVAR |SIMPLEX |SIN |SINDGEN |SINH |SIZE |SKEWNESS 
|SMOOTH |SOBEL |SORT |SPH_SCAT |SPHER_HARM |SPL_INIT |SPL_INTERP |SPLINE 
|SPRSAB |SPRSAX |SPRSIN |SPRSTP |SQRT |STANDARDIZE |STDDEV |STRARR 
|STRCMP |STRCOMPRESS |STREGEX |STRING |STRJOIN |STRLEN |STRLOWCASE 
|STRMATCH |STRMESSAGE |STRMID |STRPOS |STRSPLIT |STRTRIM |STRUPCASE 
|SVDFIT |SVSOL |SWAP_ENDIAN |SYSTIME |T_CVF |T_PDF |TAG_NAMES |TAN |TANH 
|TEMPORARY |TETRA_CLIP |TETRA_SURFACE |TETRA_VOLUME |THIN |THREED 
|TIMEGEN |TM_TEST |TOTAL |TRACE |TRANSPOSE |TRI_SURF |TRIANGULATE 
|TRIGRID |TRIQL |TRISOL |TS_COEF |TS_DIFF |TS_FCAST |TS_SMOOTH |TV |TVRD 
|UINDGEN |UINT |UINTARR |UL64INDGEN |ULINDGEN |ULON64ARR |ULONARR |ULONG 
|ULONG64 |UNIQ |UNSHARP_MASK |VALUE_LOCATE |VARIANCE |VERT_T3D |VOIGT 
|VOXEL_PROJ |WARP_TRI |WATERSHED |WF_DRAW |WHERE |WIDGET_ACTIVEX 
|WIDGET_BASE |WIDGET_BUTTON |WIDGET_COMBOBOX |WIDGET_DISPLAYCONTEXTMENU 
|WIDGET_DRAW |WIDGET_DROPLIST |WIDGET_EVENT |WIDGET_INFO |WIDGET_LABEL 
|WIDGET_LIST |WIDGET_PROPERTYSHEET |WIDGET_SLIDER |WIDGET_TAB 
|WIDGET_TABLE |WIDGET_TEXT |WIDGET_TREE |WRITE_SYLK |WTN|AXIS|BLAS_AXPY 
|BLAS_AXPY |BYTEORDER |CALL_PROCEDURE |CATCH |CD |CHOLDC |CLOSE 
|COLOR_CONVERT |CONSTRAINED_MIN |CONTOUR |COPY_LUN |CPU |CURSOR 
|DEFINE_KEY |DEFINE_MSGBLK |DEFINE_MSGBLK_FROM_FILE |DEFSYSV |DELVAR 
|DEVICE |DFPMIN |DLM_LOAD |DLM_REGISTER |DRAW_ROI |EMPTY |ENABLE_SYSRTN 
|ERASE |EXIT |FILE_CHMOD |FILE_COPY |FILE_DELETE |FILE_MKDIR |FILE_MOVE 
|FLUSH |FREE_LUN |GRID_INPUT |HEAP_FREE |HEAP_GC |HELP |IMAGE_STATISTICS 
|INTERVAL_VOLUME |ISOCONTOUR |ISOSURFACE |JOURNAL |LA_CHOLDC |LA_LUDC 
|LA_SVD |LA_TRIDC |LA_TRIQL |LA_TRIRED |LINKIMAGE |LUDC |MAKE_DLL 
|OBJ_DESTROY |ONLINE_HELP |ONLINE_HELP_PDF_INDEX |OPLOT |PARTICLE_TRACE 
|PATH_CACHE |PLOT |PLOTS |POINT_LUN |POLYFILL |POWELL 
|PRINT|PRINTD|PRINTF |PROFILER |PROFILES |PTR_FREE |PUSHD |QHULL 
|READ|READ_GIF |READ_INTERFILE |READ_JPEG |READ_PICT |READ_PPM |READ_SRF 
|READ_WAVE |READ_X11_BITMAP |READF |READS |READU |REDUCE_COLORS 
|REGISTER_CURSOR |REPLICATE_INPLACE |RESOLVE_ALL |RESOLVE_ROUTINE 
|RESTORE |SAVE |SCALE3 |SCALE3D |SET_PLOT |SET_SHADING |SETENV 
|SETUP_KEYS |SHADE_SURF |SHADE_SURF_IRR |SHADE_VOLUME |SHMMAP |SHMUNMAP 
|SHOW3 |SHOWFONT |SKIP_LUN |SLICER3 |SLIDE_IMAGE |SOCKET |SPAWN 
|SPH_4PNT |SPLINE_P |STOP |STREAMLINE |STRETCH |STRPUT |STRUCT_ASSIGN 
|STRUCT_HIDE |SURFACE |SURFR |SVDC |SWAP_ENDIAN_INPLACE |T3D |TEK_COLOR 
|TIME_TEST2 |TRIRED |TRUNCATE_LUN |TVCRS |TVLCT |TVSCL |USERSYM 
|VECTOR_FIELD |VEL |VELOVECT |VORONOI |WAIT |WDELETE |WIDGET_CONTROL 
|WINDOW |WRITE_BMP |WRITE_GIF |WRITE_IMAGE |WRITE_JPEG |WRITE_JPEG2000 
|WRITE_NRIF |WRITE_PICT |WRITE_PNG |WRITE_PPM |WRITE_SPR |WRITE_SRF 
|WRITE_TIFF |WRITE_WAV |WRITE_WAVE |WRITEU |WSET |WSHOW |XBM_EDIT 
|XDISPLAYFILE |XDXF |XFONT |XINTERANIMATE |XLOADCT |XMANAGER |XMNG_TMPL 
|XMTOOL |XOBJVIEW |XOBJVIEW_ROTATE |XOBJVIEW_WRITE_IMAGE |XPALETTE 
|XPCOLOR |XPLOT3D |XREGISTERED |XROI |XSQ_TEST |XSURFACE |XVAREDIT 
|XVOLUME |XVOLUME_ROTATE |XVOLUME_WRITE_IMAGE|XYOUTS |ZOOM 
|ZOOM_24|CDF_ATTCREATE|CDF_ATTDELETE|CDF_ATTEXISTS|CDF_ATTGET|CDF_ATTINQ|CDF_ATTNUM|CDF_ATTPUT|CDF_ATTRENAME|CDF_CLOSE|CDF_CONTROL|CDF_CREATE|CDF_DELETE|CDF_DOC|CDF_ENCODE_EPOCH|CDF_EPOCH|CDF_ERROR|CDF_EXISTS|CDF_INQUIRE|CDF_LIB_INFO|CDF_OPEN|CDF_PARSE_EPOCH|CDF_VARCREATE|CDF_VARDELETE|CDF_VARGET|CDF_VARGET1|CDF_VARINQ|CDF_VARNUM|CDF_VARPUT|CDF_VARRENAME|HDF_CLOSE|HDF_DELDD|HDF_DF24_ADDIMAGE|HDF_DF24_GETIMAGE|HDF_DF24_GETINFO|HDF_DF24_LASTREF|HDF_DF24_NIMAGES|HDF_DF24_READREF|HDF_DF24_RESTART|HDF_DFAN_ADDFDS|HDF_DFAN_ADDFID|HDF_DFAN_GETDESC|HDF_DFAN_GETFDS|HDF_DFAN_GETFID|HDF_DFAN_GETLABEL|HDF_DFAN_LABLIST|HDF_DFAN_LASTREF|HDF_DFAN_PUTDESC|HDF_DFAN_PUTLABEL|HDF_DFP_ADDPAL|HDF_DFP_GETPAL|HDF_DFP_LASTREF|HDF_DFP_NPALS|HDF_DFP_PUTPAL|HDF_DFP_READREF|HDF_DFP_RESTART|HDF_DFP_WRITEREF|HDF_DFR8_A
 DDIMAGE|HDF_DFR8_GETIMAGE|HDF_DFR8_GETINFO|HDF_DFR8_LASTREF|HDF_DFR8_NIMAGES|HDF_DFR8_PUTIMAGE|HDF_DFR8_READREF|HDF_DFR8_RESTART|HDF_DFR8_SETPALETTE|HDF_DFSD_ADDDATA|HDF_DFSD_DIMGET|HDF_DFS
D_DIMSET|HDF_DFSD_ENDSLICE|HDF_DFSD_GETDATA|HDF_DFSD_GETINFO|HDF_DFSD_GETSLICE|HDF_DFSD_PUTSLICE|HDF_DFSD_READREF|HDF_DFSD_SETINFO|HDF_DFSD_STARTSLICE|HDF_DUPDD|HDF_EXISTS|HDF_ISHDF|HDF_LIB_INFO|HDF_NEWREF|HDF_NUMBER|HDF_OPEN|HDF_GR_ATTRINFO|HDF_SD_ATTRFIND|HDF_SD_ATTRINFO|HDF_SD_ATTRSET|HDF_SD_CREATE|HDF_SD_DIMGET|HDF_SD_DIMGETID|HDF_SD_DIMSET|HDF_SD_END|HDF_SD_ENDACCESS|HDF_SD_FILEINFO|HDF_SD_GETDATA|HDF_SD_GETINFO|HDF_SD_IDTOREF|HDF_SD_ISCOORDVAR|HDF_SD_NAMETOINDEX|HDF_SD_REFTOINDEX|HDF_SD_SELECT|HDF_SD_SETEXTFILE|HDF_SD_SETINFO|HDF_SD_START|HDF_VD_ATTACH|HDF_VD_DETACH|HDF_VD_FDEFINE|HDF_VD_FEXIST|HDF_VD_FIND|HDF_VD_GET|HDF_VD_GETID|HDF_VD_GETINFO|HDF_VD_GETNEXT|HDF_VD_INSERT|HDF_VD_ISVD|HDF_VD_ISVG|HDF_VD_LONE|HDF_VD_READ|HDF_VD_SEEK|HDF_VD_SETINFO|HDF_VD_WRITE|HDF_VG_ADDTR|HDF_VG_ATTA
 CH|HDF_VG_DETACH|HDF_VG_GETID|HDF_VG_GETINFO|HDF_VG_GETNEXT|HDF_VG_GETTR|HDF_VG_GETTRS|HDF_VG_INQTR|HDF_VG_INSERT|HDF_VG_ISVD|HDF_VG_ISVG|HDF_VG_LONE|HDF_VG_NUMBER|HDF_VG_SETINFO|NCDF_ATTCOP
Y|NCDF_ATTDEL|NCDF_ATTGET|NCDF_ATTINQ|NCDF_ATTNAME|NCDF_ATTPUT|NCDF_ATTRENAME|NCDF_CLOSE|NCDF_CONTROL|NCDF_CREATE|NCDF_DIMDEF|NCDF_DIMID|NCDF_DIMINQ|NCDF_DIMRENAME|NCDF_EXISTS|NCDF_INQUIRE|NCDF_OPEN|NCDF_VARDEF|NCDF_VARGET|NCDF_VARGET1|NCDF_VARID|NCDF_VARINQ|NCDF_VARPUT|NCDF_VARRENAME|ENDELSE|RETURN"

comment delim "/*" "*/" multiline nested

type = '(?:\$[#]?|@|%)[[:word:]]+'

include "symbols.lang"

cbracket = "{|}"

include "function.lang"
include "procedure.lang"

variable = '[[:upper:]][[:word:]]*|_'

///////////////////RSIIDL.LANG END////////////////////////////////




On 5/27/2011 1:57 AM, Lorenzo Bettini wrote:
> Hi
>
> do procedure (and functions) are always called on a line?
> I mean, is the procedure name always at the beginning of a line
> (possibly with some spaces before)?
>
> Are commas used also in other contexts besides function and procedure
> invocation?
>
> cheers
> Lorenzo
>
> P.S. some examples of programs might be useful to do some tests; have
> you already a partial language definition for IDL to start from?
>
> On 05/24/2011 05:27 PM, Peter Willis wrote:
>> On 5/23/2011 7:10 AM, Lorenzo Bettini wrote:
>>
>>> (?=\()
>>>
>>> checks whether after the name there's a ( but does not consume it
>>>
>>> can the syntax of your procedure definition be identified with a regular
>>> expression?
>>>
>>> Can you make some examples of procedures?
>>>
>>> cheers
>>> Lorenzo
>>
>>
>> Hello,
>>
>> In 'IDL' procedures are *called* in the following way:
>>
>> PROCEDURE_NAME , ARGUMENT_1, ARGUMENT_2, ARGUMENT_3, .... , ARGUMENT_N
>>
>> As you can see no brackets or parenthesis are used. The problem here is
>> a regex would need to deal with only the first case of the
>> comma positioned after 'PROCEDURE_NAME' and ignore all other groupings
>> until the end of the statement.
>>
>> There is also on other problem in that statements can use continuation
>> where a '$' indicates the current statement continues on to the
>> next line:
>>
>> PROCEDURE_NAME , ARGUMENT_1, $
>> ARGUMENT_2, ARGUMENT_3, $
>> .... , ARGUMENT_N
>>
>> In this case regex needs to distinguish between the case of
>> 'PRODEDURE_NAME' and cases where the statement has been continued.
>> ie: not highlight 'ARGUMENT_2' due to the comma following there.
>>
>>
>> Declarations for *both* functions and procedures are written in
>> similar ways. The difference is only the 'RETURN' value in the case
>> of functions:
>>
>> FUNCTION function_name, arg_1, arg_2 $
>> arg_3, arg_4, ...., arg_n
>> ....<PROGRAM STATEMENTS>...
>>
>> RETURN, some_value
>> END
>>
>>
>> PRO procedure_name, arg_1, arg_2 arg_3, arg_4, ....,$
>> arg_n
>> ....<PROGRAM STATEMENTS>...
>> END
>>
>>
>>
>> Best Regards,
>>
>>
>> Peter
>>
>> _______________________________________________
>> Help-source-highlight mailing list
>> [email protected]
>> https://lists.gnu.org/mailman/listinfo/help-source-highlight
>
>