224 |
There are yet more modifiers for controlling the way \fBpcretest\fP |
There are yet more modifiers for controlling the way \fBpcretest\fP |
225 |
operates. |
operates. |
226 |
.P |
.P |
227 |
|
The \fB/8\fP modifier causes \fBpcretest\fP to call PCRE with the PCRE_UTF8 |
228 |
|
option set. This turns on support for UTF-8 character handling in PCRE, |
229 |
|
provided that it was compiled with this support enabled. This modifier also |
230 |
|
causes any non-printing characters in output strings to be printed using the |
231 |
|
\ex{hh...} notation if they are valid UTF-8 sequences. |
232 |
|
.P |
233 |
|
If the \fB/?\fP modifier is used with \fB/8\fP, it causes \fBpcretest\fP to |
234 |
|
call \fBpcre_compile()\fP with the PCRE_NO_UTF8_CHECK option, to suppress the |
235 |
|
checking of the string for UTF-8 validity. |
236 |
|
.P |
237 |
The \fB/+\fP modifier requests that as well as outputting the substring that |
The \fB/+\fP modifier requests that as well as outputting the substring that |
238 |
matched the entire pattern, pcretest should in addition output the remainder of |
matched the entire pattern, pcretest should in addition output the remainder of |
239 |
the subject string. This is useful for tests where the subject contains |
the subject string. This is useful for tests where the subject contains |
246 |
use in the automatic test scripts; it ensures that the same output is generated |
use in the automatic test scripts; it ensures that the same output is generated |
247 |
for different internal link sizes. |
for different internal link sizes. |
248 |
.P |
.P |
|
The \fB/L\fP modifier must be followed directly by the name of a locale, for |
|
|
example, |
|
|
.sp |
|
|
/pattern/Lfr_FR |
|
|
.sp |
|
|
For this reason, it must be the last modifier. The given locale is set, |
|
|
\fBpcre_maketables()\fP is called to build a set of character tables for the |
|
|
locale, and this is then passed to \fBpcre_compile()\fP when compiling the |
|
|
regular expression. Without an \fB/L\fP modifier, NULL is passed as the tables |
|
|
pointer; that is, \fB/L\fP applies only to the expression on which it appears. |
|
|
.P |
|
|
The \fB/I\fP modifier requests that \fBpcretest\fP output information about the |
|
|
compiled pattern (whether it is anchored, has a fixed first character, and |
|
|
so on). It does this by calling \fBpcre_fullinfo()\fP after compiling a |
|
|
pattern. If the pattern is studied, the results of that are also output. |
|
|
.P |
|
249 |
The \fB/D\fP modifier is a PCRE debugging feature, and is equivalent to |
The \fB/D\fP modifier is a PCRE debugging feature, and is equivalent to |
250 |
\fB/BI\fP, that is, both the \fB/B\fP and the \fB/I\fP modifiers. |
\fB/BI\fP, that is, both the \fB/B\fP and the \fB/I\fP modifiers. |
251 |
.P |
.P |
257 |
\fB/P\fP pattern modifier is specified. See also the section about saving and |
\fB/P\fP pattern modifier is specified. See also the section about saving and |
258 |
reloading compiled patterns below. |
reloading compiled patterns below. |
259 |
.P |
.P |
260 |
The \fB/S\fP modifier causes \fBpcre_study()\fP to be called after the |
The \fB/I\fP modifier requests that \fBpcretest\fP output information about the |
261 |
expression has been compiled, and the results used when the expression is |
compiled pattern (whether it is anchored, has a fixed first character, and |
262 |
matched. |
so on). It does this by calling \fBpcre_fullinfo()\fP after compiling a |
263 |
|
pattern. If the pattern is studied, the results of that are also output. |
264 |
|
.P |
265 |
|
The \fB/K\fP modifier requests \fBpcretest\fP to show names from backtracking |
266 |
|
control verbs that are returned from calls to \fBpcre_exec()\fP. It causes |
267 |
|
\fBpcretest\fP to create a \fBpcre_extra\fP block if one has not already been |
268 |
|
created by a call to \fBpcre_study()\fP, and to set the PCRE_EXTRA_MARK flag |
269 |
|
and the \fBmark\fP field within it, every time that \fBpcre_exec()\fP is |
270 |
|
called. If the variable that the \fBmark\fP field points to is non-NULL for a |
271 |
|
match, non-match, or partial match, \fBpcretest\fP prints the string to which |
272 |
|
it points. For a match, this is shown on a line by itself, tagged with "MK:". |
273 |
|
For a non-match it is added to the message. |
274 |
|
.P |
275 |
|
The \fB/L\fP modifier must be followed directly by the name of a locale, for |
276 |
|
example, |
277 |
|
.sp |
278 |
|
/pattern/Lfr_FR |
279 |
|
.sp |
280 |
|
For this reason, it must be the last modifier. The given locale is set, |
281 |
|
\fBpcre_maketables()\fP is called to build a set of character tables for the |
282 |
|
locale, and this is then passed to \fBpcre_compile()\fP when compiling the |
283 |
|
regular expression. Without an \fB/L\fP modifier, NULL is passed as the tables |
284 |
|
pointer; that is, \fB/L\fP applies only to the expression on which it appears. |
285 |
.P |
.P |
286 |
The \fB/M\fP modifier causes the size of memory block used to hold the compiled |
The \fB/M\fP modifier causes the size of memory block used to hold the compiled |
287 |
pattern to be output. |
pattern to be output. |
292 |
present, and REG_NEWLINE is set if \fB/m\fP is present. The wrapper functions |
present, and REG_NEWLINE is set if \fB/m\fP is present. The wrapper functions |
293 |
force PCRE_DOLLAR_ENDONLY always, and PCRE_DOTALL unless REG_NEWLINE is set. |
force PCRE_DOLLAR_ENDONLY always, and PCRE_DOTALL unless REG_NEWLINE is set. |
294 |
.P |
.P |
295 |
The \fB/8\fP modifier causes \fBpcretest\fP to call PCRE with the PCRE_UTF8 |
The \fB/S\fP modifier causes \fBpcre_study()\fP to be called after the |
296 |
option set. This turns on support for UTF-8 character handling in PCRE, |
expression has been compiled, and the results used when the expression is |
297 |
provided that it was compiled with this support enabled. This modifier also |
matched. |
|
causes any non-printing characters in output strings to be printed using the |
|
|
\ex{hh...} notation if they are valid UTF-8 sequences. |
|
|
.P |
|
|
If the \fB/?\fP modifier is used with \fB/8\fP, it causes \fBpcretest\fP to |
|
|
call \fBpcre_compile()\fP with the PCRE_NO_UTF8_CHECK option, to suppress the |
|
|
checking of the string for UTF-8 validity. |
|
298 |
. |
. |
299 |
. |
. |
300 |
.SH "DATA LINES" |
.SH "DATA LINES" |
741 |
.rs |
.rs |
742 |
.sp |
.sp |
743 |
.nf |
.nf |
744 |
Last updated: 26 September 2009 |
Last updated: 26 March 2010 |
745 |
Copyright (c) 1997-2009 University of Cambridge. |
Copyright (c) 1997-2010 University of Cambridge. |
746 |
.fi |
.fi |