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-rw-r--r--config.mk3
-rw-r--r--man/Makefile1
-rw-r--r--man/feh.pre21
-rw-r--r--src/options.c4
4 files changed, 20 insertions, 9 deletions
diff --git a/config.mk b/config.mk
index 6c85e05..5cad703 100644
--- a/config.mk
+++ b/config.mk
@@ -72,6 +72,9 @@ endif
ifeq (${magic},1)
CFLAGS += -DHAVE_LIBMAGIC
LDLIBS += -lmagic
+ MAN_MAGIC = enabled
+else
+ MAN_MAGIC = disabled
endif
ifeq (${verscmp},1)
diff --git a/man/Makefile b/man/Makefile
index 3be07e3..8fe2cbd 100644
--- a/man/Makefile
+++ b/man/Makefile
@@ -13,6 +13,7 @@ all: ${TARGETS}
-e 's/\$$MAN_DEBUG\$$/${MAN_DEBUG}/' \
-e 's/\$$MAN_EXIF\$$/${MAN_EXIF}/' \
-e 's/\$$MAN_INOTIFY\$$/${MAN_INOTIFY}/' \
+ -e 's/\$$MAN_MAGIC\$$/${MAN_MAGIC}/' \
-e 's/\$$MAN_XINERAMA\$$/${MAN_XINERAMA}/' \
< ${@:.1=.pre} > $@
diff --git a/man/feh.pre b/man/feh.pre
index 340d6cd..1899800 100644
--- a/man/feh.pre
+++ b/man/feh.pre
@@ -41,6 +41,9 @@ libexif builtin EXIF reader $MAN_EXIF$
.It
inotify-based auto-reload of changed files $MAN_INOTIFY$
.
+.It
+libmagic $MAN_MAGIC$
+.
.El
.
$MAN_DEBUG$
@@ -165,20 +168,20 @@ with a non-negative value to enable support for these formats.
.
.Pp
.
-As Imlib2 may take several seconds to determine whether it can load a file or
-not
-.Pq e.g. when attempting to open a large video ,
+.Pq optional feature, $MAN_MAGIC$ in this build
+.Nm
+can use libmagic to only pass image files to Imlib2.
+This feature is $MAN_MAGIC$ in this build.
+When using
.Nm
-checks each file's header before loading it.
-If it looks like an image, it is passed on to Imlib2, otherwise, it is
-assumed to be unloadable.
-This greatly improves performance when working in directories with mixed files
-.Pq i.e., directories which do not exclusively contain image files .
+with lots of non-image files
+.Pq especially with Imlib2 version 1.6.x or 1.7.0 ,
+this can speed up the detection of non-image files significantly.
If you think that Imlib2 can load a file which
.Nm
has determined to be likely not an image, set the environment variable
.Qq FEH_SKIP_MAGIC
-to pass all files directly to Imlib2, bypassing the header check.
+to pass all files directly to Imlib2, bypassing this check.
The environment variable's value does not matter, it just needs to be set.
.
.Sh OPTIONS
diff --git a/src/options.c b/src/options.c
index 71c65e2..d3524f7 100644
--- a/src/options.c
+++ b/src/options.c
@@ -976,6 +976,10 @@ static void show_version(void)
"help "
#endif
+#ifdef HAVE_LIBMAGIC
+ "magic "
+#endif
+
#if _FILE_OFFSET_BITS == 64
"stat64 "
#endif