xdiff/xhistogram: drop need for additional variable

diff --git a/userdiff.c b/userdiff.c
index 9ebf231ea5ee2e7fd1f71c9557a6537d29428d8d..e55310cd02c8e7d1f0404b2fee9539e7340993d9 100644 (file)
--- a/userdiff.c
+++ b/userdiff.c
@@ -8,9 +8,11 @@ static int ndrivers;
 static int drivers_alloc;
 
 #define PATTERNS(name, pattern, word_regex)                    \
-       { name, NULL, -1, { pattern, REG_EXTENDED }, word_regex }
+       { name, NULL, -1, { pattern, REG_EXTENDED },            \
+         word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" }
 #define IPATTERN(name, pattern, word_regex)                    \
-       { name, NULL, -1, { pattern, REG_EXTENDED | REG_ICASE }, word_regex }
+       { name, NULL, -1, { pattern, REG_EXTENDED | REG_ICASE }, \
+         word_regex "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+" }
 static struct userdiff_driver builtin_drivers[] = {
 IPATTERN("fortran",
         "!^([C*]|[ \t]*!)\n"
@@ -24,10 +26,9 @@ IPATTERN("fortran",
          * Don't worry about format statements without leading digits since
          * they would have been matched above as a variable anyway. */
         "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?"
-        "|//|\\*\\*|::|[/<>=]="
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|//|\\*\\*|::|[/<>=]="),
 PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$",
-        "[^<>= \t]+|[^[:space:]]|[\x80-\xff]+"),
+        "[^<>= \t]+"),
 PATTERNS("java",
         "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"
         "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",
@@ -35,8 +36,7 @@ PATTERNS("java",
         "[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
         "|[-+*/<>%&^|=!]="
-        "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),
 PATTERNS("objc",
         /* Negate C statements that can look like functions */
         "!^[ \t]*(do|for|if|else|return|switch|while)\n"
@@ -49,8 +49,7 @@ PATTERNS("objc",
         /* -- */
         "[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
-        "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
 PATTERNS("pascal",
         "^(((class[ \t]+)?(procedure|function)|constructor|destructor|interface|"
                "implementation|initialization|finalization)[ \t]*.*)$"
@@ -59,13 +58,26 @@ PATTERNS("pascal",
         /* -- */
         "[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
-        "|<>|<=|>=|:=|\\.\\."
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|<>|<=|>=|:=|\\.\\."),
 PATTERNS("perl",
-        "^[ \t]*package .*;\n"
-        "^[ \t]*sub .* \\{\n"
-        "^[A-Z]+ \\{\n"        /* BEGIN, END, ... */
-        "^=head[0-9] ",        /* POD */
+        "^package .*\n"
+        "^sub [[:alnum:]_':]+[ \t]*"
+               "(\\([^)]*\\)[ \t]*)?" /* prototype */
+               /*
+                * Attributes.  A regex can't count nested parentheses,
+                * so just slurp up whatever we see, taking care not
+                * to accept lines like "sub foo; # defined elsewhere".
+                *
+                * An attribute could contain a semicolon, but at that
+                * point it seems reasonable enough to give up.
+                */
+               "(:[^;#]*)?"
+               "(\\{[ \t]*)?" /* brace can come here or on the next line */
+               "(#.*)?$\n" /* comment */
+        "^(BEGIN|END|INIT|CHECK|UNITCHECK|AUTOLOAD|DESTROY)[ \t]*"
+               "(\\{[ \t]*)?" /* brace can come here or on the next line */
+               "(#.*)?$\n"
+        "^=head[0-9] .*",      /* POD */
         /* -- */
         "[[:alpha:]_'][[:alnum:]_']*"
         "|0[xb]?[0-9a-fA-F_]*"
@@ -76,33 +88,29 @@ PATTERNS("perl",
         "|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?"
         "|[-+*/%.^&<>=!|]="
         "|=~|!~"
-        "|<<|<>|<=>|>>"
-        "|[^[:space:]]"),
+        "|<<|<>|<=>|>>"),
 PATTERNS("php",
         "^[\t ]*(((public|protected|private|static)[\t ]+)*function.*)$\n"
         "^[\t ]*(class.*)$",
         /* -- */
         "[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"
-        "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|[-+*/<>%&^|=!.]=|--|\\+\\+|<<=?|>>=?|===|&&|\\|\\||::|->"),
 PATTERNS("python", "^[ \t]*((class|def)[ \t].*)$",
         /* -- */
         "[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?"
-        "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"),
         /* -- */
 PATTERNS("ruby", "^[ \t]*((class|module|def)[ \t].*)$",
         /* -- */
         "(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?."
-        "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"),
 PATTERNS("bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",
         "[={}\"]|[^={}\" \t]+"),
 PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",
-        "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+|[^[:space:]]"),
+        "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+"),
 PATTERNS("cpp",
         /* Jump targets or access declarations */
         "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:.*$\n"
@@ -113,8 +121,7 @@ PATTERNS("cpp",
         /* -- */
         "[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
-        "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
 PATTERNS("csharp",
         /* Keywords */
         "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n"
@@ -129,8 +136,7 @@ PATTERNS("csharp",
         /* -- */
         "[a-zA-Z_][a-zA-Z0-9_]*"
         "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"
-        "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"
-        "|[^[:space:]]|[\x80-\xff]+"),
+        "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),
 { "default", NULL, -1, { NULL, 0 } },
 };
 #undef PATTERNS