similar to: grep and PCRE fun

According to ?pcre_config, just-in-time compilation support in the PCRE library <http://pcre.org/> is "desirable for speed". However, it seems that the pattern matching functions defined in src/main/grep.c make no effort to utilize the possible JIT support. Therefore it appears that currently R does not benefit from JIT support in PCRE. The attached patch is an attempt to enable

Full_Name: John Brzustowski Version: R-devel-trunk, R-2.4.0 OS: linux, gcc 4.0.3 Submission from: (NULL) (206.248.157.184) This isn't a bug, but an easily-remedied performance issue. SYMPTOM > for (i in 1000 * (1:20)) { y <- paste(rep("asdf", times=i), collapse=" ") t <- system.time(strsplit(y, " ", fixed=TRUE)) cat(sprintf("i=%5d

Dear R-developers, I would appreciate any insights over compiling R 3.4 with Intel MKL -- I have been successful until R 3.3.3 but now it stops complaining about pcre though it worked without Intel MKL as follows, ./configure LDFLAGS=-L/genetics/data/software/lib CFLAGS=-fPIC -I/genetics/data/software/include --enable-R-shlib I have used, export MKL_NUM_THREADS=15 export

Hi all, Based upon an offlist communication this morning, I am somewhat confused (more than I usually am on most Monday mornings...) about the use of grep() with factors as the 'x' argument. The argument guidance in ?grep indicates: x, text a character vector where matches are sought. Coerced to character if possible. and in the Details section: Arguments which should be

On our Scientific Linux 6, there is gcc --version gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-17) and later version (a symbolic at HOME to the system directory), export MKL=/home/jhz22/11.3.3.210/mkl export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$MKLROOT/lib/intel64 ./configure --prefix=/home/jhz22 LDFLAGS=-L/home/jhz22/lib CPPFLAGS=-I/home/jhz22/include \ --enable-R-shlib --with-lapack \

Currently you can only turn on miniexpect debugging by recompiling. These two patches make it configurable at runtime, and also improve the usefulness of the output. Rich.

I am looking for a fast way to count the number of rows in a matrix are identical to a pattern vector. For example, if I am interested in counting the number of row vectors in a matrix that are identical to (1,2,3) what would I do? I have tried the identical statement in a loop but this is far too slow. I have a very large matrix and need to avoid loops at all costs. Thanks for any help.

The attached patch provides a modification to the recent fix/improvement to do_grep already included in the most recent development version. The original fix added new functionality to the grep function by adding a new parameter, 'invert'. In the source code for the underlying do_grep, the value of the parameter is used to invert the logical match-no match flag vector ind. The

Debugging can now be enabled at runtime. --- example-sshpass.c | 46 +++++++++++++++++++++++++------- miniexpect.c | 78 ++++++++++++++++++++++++++++++++++--------------------- miniexpect.h | 6 +++++ miniexpect.pod | 21 +++++++++++++++ 4 files changed, 113 insertions(+), 38 deletions(-) diff --git a/example-sshpass.c b/example-sshpass.c index 3449a20..11df02e 100644 ---

On Aug 28, 2009, at 1:53 AM, Daniel Dunbar wrote: > Nice! > > This looks good to me but probably Chris or someone else should sign > off on it. This seems ok to me, please commit. One minor comment: +++ b/lib/Support/Regex.cpp + // Allocate pmatch with at least one element. + pmatch = new llvm_regmatch_t[nmatch > 0 ? nmatch : 1]; + pmatch[0].rm_so = 0; + pmatch[0].rm_eo =

--- p2v/ssh.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/p2v/ssh.c b/p2v/ssh.c index 1e9b05c..ff906df 100644 --- a/p2v/ssh.c +++ b/p2v/ssh.c @@ -505,7 +505,16 @@ open_data_connection (struct config *config, int *local_port, int *remote_port) }, ovector, ovecsize)) { case 100: /* Ephemeral port. */ port_str =

Nice! This looks good to me but probably Chris or someone else should sign off on it. There were two minor warnings on Darwin: -- In file included from /Volumes/Data/Users/ddunbar/llvm/lib/Support/regexec.c:81: /Volumes/Data/Users/ddunbar/llvm/lib/Support/regengine.inc: In function 'sbackref': /Volumes/Data/Users/ddunbar/llvm/lib/Support/regengine.inc:665: warning: control reaches end of

Hi I am searching for a way to do something like "ABC" -> c("A","B","C"). How can this be accomplished? I tried cut() and split(), but they do something else, it seems. The purpose for doing this is to find the number of common (and uncommon) characters, i.e. ultimately I want something like this: > foo("ABD","ADE") c(2,1) # 2

Fix and/or document issues raised in this thread: https://www.redhat.com/archives/libguestfs/2017-February/msg00010.html Rich.

--- p2v/ssh.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/p2v/ssh.c b/p2v/ssh.c index 991888348..4966097ff 100644 --- a/p2v/ssh.c +++ b/p2v/ssh.c @@ -392,6 +392,9 @@ start_ssh (unsigned spawn_flags, struct config *config, set_ssh_internal_error ("ssh: mexp_spawnvf: %m"); return NULL; } +#if DEBUG_STDERR + mexp_set_debug_file (h,

free_last_match() frees the memory of the match passed as argument, so accessing it is not possible after free_last_match(). Since all we need is the return code, save it locally for later usage. --- common/mlpcre/pcre-c.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/common/mlpcre/pcre-c.c b/common/mlpcre/pcre-c.c index da982025f..0762a8341 100644 ---

Dear R-help, (This is the first time I tried compiling 1.6.x from source on WinNT4, so please bear with me...) I tried following the instruction in src/gnuwin32/INSTALL as closely as I could, but encounter the following errors at the make step. Can some kind soul please help? I'm using pcre-3.9 and MinGW-2.0.0-3. I checked and libRpcre.a _is_ in src/extra/pcre. TIA, Andy ... gcc

Since the daemon links to pcre and use regular expressions, and since the COMPILE_REGEXP macro doesn't depend on any aspects of the library-side code (eg. the guestfs_h handle etc), we can allow the daemon to use the COMPILE_REGEXP macro. Move the macro to "guestfs-internal-all.h" to permit this. --- src/guestfs-internal-all.h | 26 ++++++++++++++++++++++++++ src/guestfs-internal.h

Print a better error message when the non-root user on the conversion server requires a password to use sudo, and p2v is told to use sudo. See also RHZ#1340809. --- p2v/ssh.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/p2v/ssh.c b/p2v/ssh.c index 76a6827..97d76ae 100644 --- a/p2v/ssh.c +++ b/p2v/ssh.c @@ -97,6 +97,7 @@ static void free_regexps (void) __attribute__((destructor));

Woot! Thanks a bunch Edwin! Some comments on the patch: -- I'm not sure if it makes sense to import the man pages, if we only expose Regex.h. > diff --git a/include/llvm/Support/Regex.h b/include/llvm/Support/Regex.h > new file mode 100644 > index 0000000..314bff4 > --- /dev/null > +++ b/include/llvm/Support/Regex.h > @@ -0,0 +1,49 @@ > +//===-- Regex.h - Regular