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update description of HS_FLAG_SOM_LEFTMOST to eliminate ambiguity

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Hong, Yang A 2020-04-16 12:16:14 +00:00
parent 8344395bfd
commit 22991f2da1
2 changed files with 4 additions and 4 deletions
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4
doc/dev-reference/compilation.rst
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@ -55,7 +55,7 @@ Hyperscan provides support for targeting a database at a particular CPU
platform; see :ref:`instr_specialization` for details.
=====================
Compile Pure Literals
Compile Pure Literals
=====================
Pure literal is a special case of regular expression. A character sequence is
@ -98,7 +98,7 @@ In ``v5.2.0``, Hyperscan introduces 2 new compile APIs for pure literal patterns
#. :c:func:`hs_compile_lit_multi`: compiles an array of pure literals into a
pattern database. All of the supplied patterns will be scanned for
concurrently at scan time, with user-supplied identifiers returned when they
match.
match.
These 2 APIs are designed for use cases where all patterns contained in the
target rule set are pure literals. Users can pass the initial pure literal

4
src/hs_compile.h
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@ -985,8 +985,8 @@ hs_error_t HS_CDECL hs_populate_platform(hs_platform_info_t *platform);
* offset when a match is reported for this expression. (By default, no start
* of match is returned.)
*
* Enabling this behaviour may reduce performance and increase stream state
* requirements in streaming mode.
* For all the 3 modes, enabling this behaviour may reduce performance. And
* particularly, it may increase stream state requirements in streaming mode.
*/
#define HS_FLAG_SOM_LEFTMOST 256