If we can't use cmark-gfm, then stick with the built in cmark instead.

1 files changed, 12 insertions, 5 deletions

diff --git a/notYetAnotherWiki.lua b/notYetAnotherWiki.lua
index c7b205d..90c8514 100755
--- a/notYetAnotherWiki.lua
+++ b/notYetAnotherWiki.lua
@@ -103,11 +103,18 @@ for name, file in pairs(Files) do
     else
         -- Ordinary md file, stash it's metadata and parsed body.
         -- I need cmark-gfm, coz lcmark doesn't support tables and stuff, it only does basic cmark.
-        -- Have to strip out the metadata first, coz cmark-gfm doesn't grok that.
-        h = io.popen('cp "' .. name .. '.md" "' .. name .. '02" ;   csplit -ksz -f  "' .. name .. '"   "' .. name .. '.md" "/^---$/+1" "{1}" 2>/dev/null ; rm "' .. name .. '00" ; rm "' .. name .. '01" 2>/dev/null')
-        if nil ~= h then h:close() end
-        h = io.popen('cmark-gfm -t html -e footnotes -e table -e strikethrough -e autolink -e tagfilter -e tasklist "' .. name .. '02" ; rm "' .. name .. '02"')
-        if nil ~= h then body = h:read('*a') ; h:close() end
+        local out = ''
+        h = io.popen('if which cmark-gfm ; then echo "found" ; fi | tail -n 1')
+        if nil ~= h then out = h:read('a') ; h:close() end
+        if 'found\n' == out then
+            -- Have to strip out the metadata first, coz cmark-gfm doesn't grok that.
+            h = io.popen('cp "' .. name .. '.md" "' .. name .. '02" ;   csplit -ksz -f  "' .. name .. '"   "' .. name .. '.md" "/^---$/+1" "{1}" 2>/dev/null ; rm "' .. name .. '00" ; rm "' .. name .. '01" 2>/dev/null')
+            if nil ~= h then h:close() end
+            h = io.popen('cmark-gfm -t html -e footnotes -e table -e strikethrough -e autolink -e tagfilter -e tasklist "' .. name .. '02" ; rm "' .. name .. '02"')
+            if nil ~= h then body = h:read('*a') ; h:close() end
+        else
+            print('cmark-gfm not found')
+        end
         Files[name].metadata = metadata
         Files[name].body = body
         table.insert(Subs[path].files, bit)