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diff --git a/Master/texmf-dist/source/fonts/malayalam/preproc/patc/patc.txt b/Master/texmf-dist/source/fonts/malayalam/preproc/patc/patc.txt new file mode 100644 index 00000000000..53e7dea25e8 --- /dev/null +++ b/Master/texmf-dist/source/fonts/malayalam/preproc/patc/patc.txt @@ -0,0 +1,97 @@ + +patc v1.1b -- a little tool to convert patterns + +Introduction +------------ +patc uses a patfile, in which a set of patterns is specified, +to chance patterns in the input to other patterns in the output, especially +usefull if you want to chance from different transcriptions. + +Usage +----- + + patc [-v] [-p patfile] infile outfile + -v verbose mode + + default patfile: "patc.pat" + +patc is a pattern conversion tool, that changes patterns in the input +into other patterns in the output. It is specificly made for entering +foreign scripts in transcriptions. patc can handle several sets of patterns +in a file at the same time. + +patc scans the text from begin to end for patterns, starting with the first +not yet used character. Whenever patc finds a pattern, it executes the +corresponding action. This can be outputting a string, give an message, +or switch to another set of patterns. When no pattern can be found, +will output the first letter unchanged, and start searching again with the +next letter, or if you want that, it will complain about it. + +The patterns patc can recognize are given in a patfile. A patfile consists +of lines, that can be empty (white space or comment), contain a command, or +a pattern with its corresponding action. + +Comment lines start with %, command lines with an @ and a pattern line +with a ". Every line can end with comment. + +Commands: + @patterns # definition of patterns in set # follows + @rpatterns # definition of patterns in set # follows. + if a pattern cannot be found in the input, this + will generate an error message. + @end end of patfile + +A pattern line consists of the pattern inbetween double quotes, an +action opcode, and optionally a string in between codes as an argument. + +Actions: + p string output string + # string output string, use pattern set # from now on. + e string give error message string, forget this pattern. + f forget this pattern (silently) + s skip until end of line (including this patten) + S string skip till first char of string + B skip till closing brace, matching braces) + c copy until end of line (including this patten) + t copy a TeX command + T skip a TeX command + +In strings and patterns the following escape codes can be used: + + \t tab + \n newline + \" double quote + \\ backslash + \b backspace + \xxx character xxx octal + \dxxx character xxx decimal + \hxx character xx hexadecimal + +Do _not_ use character \000 ! + +Warning +------- +Don't give patterns in alfabetic order. The algorithm used will show its +worse case performance then. + +Wishes for future versions +-------------------------- +* Include meta-characters, as to decrease the number of patterns. + Proposed syntax: + @META \C "b" "c" "d" "f" ... consonants + @META \V "a" "e" "i" "o" ... vowels + This is quite difficult, and requires a rethink of the underlying + data structures, so it will take some time. Any volunteer? +* Make it count. (easy too) +* More actions. + +Author +------ +Jeroen Hellingman. <jhelling@cs.ruu.nl> +'t Zand 2, 4133 TB Vianen, The Netherlands + +Copyright & disclaimer +---------------------- +This program may be used, copied, and distributed by anyone who feels the +need, but it is copyrighted by me. This is offered free as it is, I do not +accept any responseability when it does not do what you want it to do. |