[Ranger-users] enhance preview script

[Liu Yubao]

[[ please Cc to me, I don't subscribe this list.]]

Hi,

I enhanced the script with the patch against master branch to add
these features:

(1) add -l 10 to pdftotext to speed up the response, or ranger will
freeze on my box
(2) add -nopgbrk to suppress ^L in output of pdftotext
(3) support w3m text web browser, this is installed in all Debian
boxes by default
(4) split long lines in output of preview mode for pdf/html as I don't
like to press 'l' to scroll,
     thus also make scope.sh return 0 in these cases to adapt width
change of the preview column.
     I don't split for output of highlight because I think they are
often well formatted and don't
     have too much long lines.

Hope they are useful.

Regards,
Yubao Liu

diff --git a/ranger/data/scope.sh b/ranger/data/scope.sh
index 754b54d..db184f9 100755
--- a/ranger/data/scope.sh
+++ b/ranger/data/scope.sh
@@ -41,12 +41,13 @@ case "$extension" in
                exit 1;;
        # PDF documents:
        pdf)
-               pdftotext -q "$path" - | head -n $maxln
-               success && exit 3 || exit 1;;
+               pdftotext -l 10 -nopgbrk -q "$path" - | head -n $maxln
| fmt -s -w $width
+               success && exit 0 || exit 1;;
        # HTML Pages:
        htm|html|xhtml)
-               have lynx   && lynx   -dump "$path" | head -n $maxln && exit 5
-               have elinks && elinks -dump "$path" | head -n $maxln && exit 5
+               have w3m    && w3m    -dump "$path" | head -n $maxln |
fmt -s -w $width && exit 0
+               have lynx   && lynx   -dump "$path" | head -n $maxln |
fmt -s -w $width && exit 0
+               have elinks && elinks -dump "$path" | head -n $maxln |
fmt -s -w $width && exit 0
                ;; # fall back to highlight/cat if theres no lynx/elinks
 esac