Doc: check for w3m existence
authorHeiko Schlittermann (HS12-RIPE) <hs@schlittermann.de>
Sun, 25 Jun 2017 17:57:57 +0000 (19:57 +0200)
committerHeiko Schlittermann (HS12-RIPE) <hs@schlittermann.de>
Sun, 25 Jun 2017 17:59:49 +0000 (19:59 +0200)
w3m is called as non-last command in pipelines. A missing w3m
creates empty output and Make doesn't get it, because the last command
of the pipe (e.g. Tidytxt) doesn't return failure on empty input.


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