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magicdata.patch
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Patches applied to file 5.14 sources tree before generating magic.mgc
and before running create_data_file.php to create data_file.c.
From ef2329cf71acb59204dd981e2c6cce6c81fe467c Mon Sep 17 00:00:00 2001
From: Christos Zoulas <[email protected]>
Date: Mon, 25 Mar 2013 14:06:55 +0000
Subject: [PATCH] limit to 100 repetitions to avoid excessive backtracking
Carsten Wolff
---
magic/Magdir/commands | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/magic/Magdir/commands b/magic/Magdir/commands
index 67c3eee..4a7d8dd 100644
--- a/magic/Magdir/commands
+++ b/magic/Magdir/commands
@@ -49,7 +49,7 @@
!:mime text/x-awk
0 string/wt #!\ /usr/bin/awk awk script text executable
!:mime text/x-awk
-0 regex =^\\s*BEGIN\\s*[{] awk script text
+0 regex =^\\s{0,100}BEGIN\\s{0,100}[{] awk script text
# AT&T Bell Labs' Plan 9 shell
0 string/wt #!\ /bin/rc Plan 9 rc shell script text executable
--
1.8.5.5
From 0b478f445b6b7540b58af5d1fe583fa9e48fd745 Mon Sep 17 00:00:00 2001
From: Christos Zoulas <[email protected]>
Date: Wed, 28 May 2014 19:52:36 +0000
Subject: [PATCH] further optimize awk by not looking for the BEGIN regex until
we found the BEGIN (Jan Kaluza)
---
magic/Magdir/commands | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/magic/Magdir/commands b/magic/Magdir/commands
index bfffdef..26b2869 100644
--- a/magic/Magdir/commands
+++ b/magic/Magdir/commands
@@ -49,7 +49,8 @@
!:mime text/x-awk
0 string/wt #!\ /usr/bin/awk awk script text executable
!:mime text/x-awk
-0 regex =^\\s{0,100}BEGIN\\s{0,100}[{] awk script text
+0 search/16384 BEGIN
+>0 regex =^\\s{0,100}BEGIN\\s{0,100}[{] awk script text
# AT&T Bell Labs' Plan 9 shell
0 string/wt #!\ /bin/rc Plan 9 rc shell script text executable
--
2.0.3
From 71a8b6c0d758acb0f73e2e51421a711b5e9d6668 Mon Sep 17 00:00:00 2001
From: Christos Zoulas <[email protected]>
Date: Fri, 30 May 2014 16:48:44 +0000
Subject: [PATCH] Limit regex search for BEGIN to the first 4K of the file.
---
magic/Magdir/commands | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/magic/Magdir/commands b/magic/Magdir/commands
index 26b2869..bcd0f43 100644
--- a/magic/Magdir/commands
+++ b/magic/Magdir/commands
@@ -49,8 +49,7 @@
!:mime text/x-awk
0 string/wt #!\ /usr/bin/awk awk script text executable
!:mime text/x-awk
-0 search/16384 BEGIN
->0 regex =^\\s{0,100}BEGIN\\s{0,100}[{] awk script text
+0 regex/4096 =^\\s{0,100}BEGIN\\s{0,100}[{] awk script text
# AT&T Bell Labs' Plan 9 shell
0 string/wt #!\ /bin/rc Plan 9 rc shell script text executable
--
2.0.3