Info Catalog
flex: Bibliography
flex: Top
flex: Appendices
FAQ *** From time to time, the 'flex' maintainer receives certain questions. Rather than repeat answers to well-understood problems, we publish them here.
· When was flex born? · How do I expand backslash-escape sequences in C-style quoted strings? · Why do flex scanners call fileno if it is not ANSI compatible? · Does flex support recursive pattern definitions? · How do I skip huge chunks of input (tens of megabytes) while using flex? · Flex is not matching my patterns in the same order that I defined them. · My actions are executing out of order or sometimes not at all. · How can I have multiple input sources feed into the same scanner at the same time? · Can I build nested parsers that work with the same input file? · How can I match text only at the end of a file? · How can I make REJECT cascade across start condition boundaries? · Why cant I use fast or full tables with interactive mode? · How much faster is -F or -f than -C? · If I have a simple grammar cant I just parse it with flex? · Why doesn't yyrestart() set the start state back to INITIAL? · How can I match C-style comments? · The period isn't working the way I expected. · Can I get the flex manual in another format? · Does there exist a "faster" NDFA->DFA algorithm? · How does flex compile the DFA so quickly? · How can I use more than 8192 rules? · How do I abandon a file in the middle of a scan and switch to a new file? · How do I execute code only during initialization (only before the first scan)? · How do I execute code at termination? · Where else can I find help? · Can I include comments in the "rules" section of the file? · I get an error about undefined yywrap(). · How can I change the matching pattern at run time? · How can I expand macros in the input? · How can I build a two-pass scanner? · How do I match any string not matched in the preceding rules? · I am trying to port code from AT&T lex that uses yysptr and yysbuf. · Is there a way to make flex treat NULL like a regular character? · Whenever flex can not match the input it says "flex scanner jammed". · Why doesn't flex have non-greedy operators like perl does? · Memory leak - 16386 bytes allocated by malloc. · How do I track the byte offset for lseek()? · How do I use my own I/O classes in a C++ scanner? · How do I skip as many chars as possible? · deleteme00 · Are certain equivalent patterns faster than others? · Is backing up a big deal? · Can I fake multi-byte character support? · deleteme01 · Can you discuss some flex internals? · unput() messes up yy_at_bol · The | operator is not doing what I want · Why can't flex understand this variable trailing context pattern? · The ^ operator isn't working · Trailing context is getting confused with trailing optional patterns · Is flex GNU or not? · ERASEME53 · I need to scan if-then-else blocks and while loops · ERASEME55 · ERASEME56 · ERASEME57 · Is there a repository for flex scanners? · How can I conditionally compile or preprocess my flex input file? · Where can I find grammars for lex and yacc? · I get an end-of-buffer message for each character scanned. · unnamed-faq-62 · unnamed-faq-63 · unnamed-faq-64 · unnamed-faq-65 · unnamed-faq-66 · unnamed-faq-67 · unnamed-faq-68 · unnamed-faq-69 · unnamed-faq-70 · unnamed-faq-71 · unnamed-faq-72 · unnamed-faq-73 · unnamed-faq-74 · unnamed-faq-75 · unnamed-faq-76 · unnamed-faq-77 · unnamed-faq-78 · unnamed-faq-79 · unnamed-faq-80 · unnamed-faq-81 · unnamed-faq-82 · unnamed-faq-83 · unnamed-faq-84 · unnamed-faq-85 · unnamed-faq-86 · unnamed-faq-87 · unnamed-faq-88 · unnamed-faq-90 · unnamed-faq-91 · unnamed-faq-92 · unnamed-faq-93 · unnamed-faq-94 · unnamed-faq-95 · unnamed-faq-96 · unnamed-faq-97 · unnamed-faq-98 · unnamed-faq-99 · unnamed-faq-100 · unnamed-faq-101 · What is the difference between YYLEX_PARAM and YY_DECL? · Why do I get "conflicting types for yylex" error? · How do I access the values set in a Flex action from within a Bison action?