Add tentative enhancements to br(1)

3 files changed, 32 insertions, 6 deletions

diff --git a/README.markdown b/README.markdown
index 60f68df4..3b5ecb8d 100644
--- a/README.markdown
+++ b/README.markdown
@@ -330,7 +330,8 @@ Installed by the `install-bin` target:
 *   `ax(1)` evaluates an awk expression given on the command line; this is
     intended as a quick way to test how Awk would interpret a given expression.
 *   `bel(1)` prints a terminal bell character.
-*   `br(1)` launches $BROWSER.
+*   `br(1)` launches $BROWSER, or a more suitable application for an URL if it
+    knows of one.
 *   `ca(1)` prints a count of its given arguments.
 *   `cf(1)` prints a count of entries in a given directory.
 *   `clrd(1)` sets up a per-line file read, clearing the screen first.
diff --git a/bin/br b/bin/br
index 1d982c04..e2a746c1 100755
--- a/bin/br
+++ b/bin/br
@@ -1,3 +1,24 @@
 #!/bin/sh
-# Launch $BROWSER
+# Probably launch $BROWSER, but try a few shortcuts first
+
+# Get the URL and its MIME type
+url=$1
+mt=$(urlmt "$url")
+
+# If the MIME type is an image, load it in feh(1)
+case $mt in
+    image/*)
+        curl -- "$url" | feh - && exit
+        ;;
+esac
+
+# If it's a YouTube video without a given start time, load it in mpv(1)
+case $url in
+    *youtube.com/watch*[?\&]t=) ;;
+    *youtube.com/watch*)
+        mpv -- "$url" && exit
+        ;;
+esac
+
+# Otherwise, just ask $BROWSER to handle it
 exec "$BROWSER" "$@"
diff --git a/man/man1/br.1 b/man/man1/br.1
index 5d4d928b..ad841750 100644
--- a/man/man1/br.1
+++ b/man/man1/br.1
@@ -12,10 +12,14 @@ BROWSER=firefox
 .B br
 .SH DESCRIPTION
 .B br
-execs the program in the $BROWSER environment variable. That's it. It was
-written so the browser could safely be launched from xbindkeys(1) and similar
-programs.
+run with no arguments just execs the program in the $BROWSER environment
+variable. If given a single URL, it tries to get its MIME type from a HEAD
+request and matches on the URL and/or the MIME type to see if any more suitable
+programs could open it. Otherwise, it falls back on $BROWSER.
+.P
+At the time of writing, it tries to load image types with feh(1), and YouTube
+URLs without a start time with mpv(1).
 .SH SEE ALSO
-brxs(1)
+brxs(1), urlh(1), urlmt(1), feh(1), mpv(1)
 .SH AUTHOR
 Tom Ryder <tom@sanctum.geek.nz>