HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 717a0a0d FP |
1 | EBNF (Extended Backus Normal Form) description of the format of the tags |
| 2 | file created by etags.c and interpreted by etags.el | |
| 3 | Francesco Potorti` <pot@gnu.org> 2002 | |
| 4 | ================================================================ | |
| 5 | ||
| 6 | FF ::= #x0c /* form feed */ | |
| 7 | ||
| 8 | LF ::= #x0a /* line feed */ | |
| 9 | ||
| 10 | PATTERM ::= #x80 /* pattern terminator */ | |
| 11 | ||
| 12 | NAMTERM ::= #x01 /* name terminator */ | |
| 13 | ||
| 14 | regchar ::= [^#x0a#x0c#x80] /* regular character */ | |
| 15 | ||
| 16 | regstring ::= { regchar } /* regular string */ | |
| 17 | ||
| 18 | unsint ::= [0-9] { [0-9] } /* non-negative integer */ | |
| 19 | ||
| 20 | ||
| 21 | ||
| 22 | tagfile ::= { tagsection } /* a tags file */ | |
| 23 | ||
| 24 | tagsection ::= FF LF ( includesec | regularsec ) LF | |
| 25 | ||
| 26 | includesec ::= filename ",include" [ LF fileprop ] | |
| 27 | ||
| 28 | regularsec ::= filename "," [ unsint ] [ LF fileprop ] { LF tag } | |
| 29 | ||
| 30 | filename ::= regchar regstring /* a file name */ | |
| 31 | ||
| 32 | fileprop ::= PATTERM "(" regstring ")" | |
| 33 | ||
| 34 | tag ::= directtag | patterntag | |
| 35 | ||
| 36 | directtag ::= PATTERM realposition | |
| 37 | ||
| 38 | patterntag ::= pattern PATTERM [ tagname NAMTERM ] position | |
| 39 | ||
| 40 | pattern ::= regstring /* a tag pattern */ | |
| 41 | ||
| 42 | tagname ::= regchar regstring /* a tag name */ | |
| 43 | ||
| 44 | position ::= realposition | "," | |
| 45 | ||
| 46 | realposition ::= "," unsint | unsint "," | unsint "," unsint |