The start_position arguments are passed to pcre_exec() as the
startoffset, which is in bytes (not characters).
I had recently a doubt about this, so it's better to document it.
https://bugzilla.gnome.org/show_bug.cgi?id=747927
Normally, recent PCRE behaves as if certain patterns were replaced
by a more "possessive" pattern that gives the same answer for normal
regex matching, but is more efficient. However, the modified pattern
produces fewer results under DFA. If we want the full set of results
we have to apply PCRE_NO_AUTO_POSSESS, and that's a compile-time flag.
This currently only affects a system PCRE, but would also work fine for
an internal PCRE 8.34 or later if the embedded copy is updated.
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=733325
Reviewed-by: Christian Persch <chpe@gnome.org>
Since we are no longer using sgml mode, using /* */ to
escape block comments inside examples does not work anymore.
Switch to using line comments with //
Since all element markup is now gone from the doc comments,
we can turn off the gtk-doc sgml mode, which means that from
now on, docbook markup is no longer allowed in doc comments.
To make this possible, we have to replace all remaining
entities in doc comments by their replacement text, & -> &
and so on.
The restrictions on partial matching no longer apply with PCRE >= 8.00.
The pcrepartial manpage contains the "FORMERLY RESTRICTED PATTERNS"
section:
"For releases of PCRE prior to 8.00, because of the way certain
internal optimizations were implemented in the pcre_exec() function, the
PCRE_PARTIAL option (predecessor of PCRE_PARTIAL_SOFT) could not be used
with all patterns. From release 8.00 onwards, the restrictions no
longer apply, and partial matching with can be requested for any
pattern."
https://bugzilla.gnome.org/show_bug.cgi?id=704250
Since PCRE 8.00 it supports a variant of PCRE_NOTEMPTY that works
similarly except that it only applies to the start of the matched string
but permits empty matches further in.
g_regex_get_compile_get_compile_flags() and g_regex_get_match_flags()
were leaking PCRE flags that don't exist in the corresponding
public GRegexCompileFlags and GRegexMatchFlags; this change masks
these internal flags.
These flags override the compile option at match time. They use PCRE_BSR_ANYCRLF
and PCRE_BSR_UNICODE, resp., which make \R match only CR, LF and CRLF, or any
Unicode newline character or character sequences, resp.
When using the system PCRE, and it was compiled with incompatible options,
the code was returning from inside a g_once_init_enter/leave block without
calling g_once_init_leave().
-Include gthread.h in gregex.c as g_once_init_enter and g_once_init_leave
are used.
-Define prototype for g_thread_DllMain in gthreadprivate.h for Windows
The function can be used to let regex compile non-NUL-terminated
strings without redesigning the way the pattern is stored in GRegex
objects and retrieved with g_regex_get_pattern.
https://bugzilla.gnome.org/show_bug.cgi?id=615895
