diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 10 |
1 files changed, 5 insertions, 5 deletions
@@ -2959,8 +2959,8 @@ subexpression [*][^/] can match "**", since a * is not a /. If the next character in the input is /, we missed a comment close. To fix the problem we revise to this: - ([^*]|[*][^*/])* - + ([^*]|[*][^*/])* + (The interior of a C language comment is a any mixture of zero or more non-asterisks, or digraphs consisting of an asterisk followed by something other than a slash or another asterisk). Oops, now we @@ -2970,7 +2970,7 @@ not simply match asterisk-non-asterisk digraphs, but rather sequences of one or more asterisks followed by a non-asterisk: ([^*]|[*]*[^*/])* - + This is still not right, because, for instance, it fails to match the interior of a comment which is terminated by asterisks, including the simple test cases where the comment interior is nothing but asterisks. We have no provision in @@ -2980,11 +2980,11 @@ is to add on a subexpression which optionally matches a run of zero or more interior asterisks before the comment close: ([^*]|[*]*[^*/])*[*]* - + Thus our the semi-final regular expression is [/][*]([^*]|[*]*[^*/])*[*]*[*][/] - + (A C comment is an interior string enclosed in /* */, where this interior part consists of a mixture of non-asterisk characters, as well as runs of asterisk characters which are terminated by a character other than a slash, except for |