This is my test for showfor.

gistfile1.txt

>= tests

for fx:
{for fx}null{/for}
{for fx,win}win{/for}
{for fx,winxp}winxp{/for}
{for fx,win7}win7{/for}
{for fx,win8}win8{/for}
{for fx,mac}mac{/for}
{for fx,linux}linux{/for}

for fx17:
{for fx17}null{/for}
{for fx17,win}win{/for}
{for fx17,winxp}winxp{/for}
{for fx17,win7}win7{/for}
{for fx17,win8}win8{/for}
{for fx17,mac}mac{/for}
{for fx17,linux}linux{/for}

for fx23:
{for fx23}null{/for}
{for fx23,win}win{/for}
{for fx23,winxp}winxp{/for}
{for fx23,win7}win7{/for}
{for fx23,win8}win8{/for}
{for fx23,mac}mac{/for}
{for fx23,linux}linux{/for}

for fx24:
{for fx24}null{/for}
{for fx24,win}win{/for}
{for fx24,winxp}winxp{/for}
{for fx24,win7}win7{/for}
{for fx24,win8}win8{/for}
{for fx24,mac}mac{/for}
{for fx24,linux}linux{/for}

for fx25:
{for fx25}null{/for}
{for fx25,win}win{/for}
{for fx25,winxp}winxp{/for}
{for fx25,win7}win7{/for}
{for fx25,win8}win8{/for}
{for fx25,mac}mac{/for}
{for fx25,linux}linux{/for}

for fx26:
{for fx26}null{/for}
{for fx26,win}win{/for}
{for fx26,winxp}winxp{/for}
{for fx26,win7}win7{/for}
{for fx26,win8}win8{/for}
{for fx26,mac}mac{/for}
{for fx26,linux}linux{/for}

<hr>

for not fx:
{for not fx}null{/for}
{for not fx,win}win{/for}
{for not fx,winxp}winxp{/for}
{for not fx,win7}win7{/for}
{for not fx,win8}win8{/for}
{for not fx,mac}mac{/for}
{for not fx,linux}linux{/for}

for not fx17:
{for not fx17}null{/for}
{for not fx17,win}win{/for}
{for not fx17,winxp}winxp{/for}
{for not fx17,win7}win7{/for}
{for not fx17,win8}win8{/for}
{for not fx17,mac}mac{/for}
{for not fx17,linux}linux{/for}

for not fx23:
{for not fx23}null{/for}
{for not fx23,win}win{/for}
{for not fx23,winxp}winxp{/for}
{for not fx23,win7}win7{/for}
{for not fx23,win8}win8{/for}
{for not fx23,mac}mac{/for}
{for not fx23,linux}linux{/for}

for not fx24:
{for not fx24}null{/for}
{for not fx24,win}win{/for}
{for not fx24,winxp}winxp{/for}
{for not fx24,win7}win7{/for}
{for not fx24,win8}win8{/for}
{for not fx24,mac}mac{/for}
{for not fx24,linux}linux{/for}

for not fx25:
{for not fx25}null{/for}
{for not fx25,win}win{/for}
{for not fx25,winxp}winxp{/for}
{for not fx25,win7}win7{/for}
{for not fx25,win8}win8{/for}
{for not fx25,mac}mac{/for}
{for not fx25,linux}linux{/for}

for not fx26:
{for not fx26}null{/for}
{for not fx26,win}win{/for}
{for not fx26,winxp}winxp{/for}
{for not fx26,win7}win7{/for}
{for not fx26,win8}win8{/for}
{for not fx26,mac}mac{/for}
{for not fx26,linux}linux{/for}

<hr>

{for fx24,fx26}fx24,fx26{/for}
{for mac,win}mac,win{/for}
{for fx24,fx26,mac,win}fx24,fx26,mac,win{/for}

<hr>

{for fxos}fxos{/for}
{for fxos1.0}fxos1.0{/for}
{for fxos1.1}fxos1.1{/for}
{for fxos1.2}fxos1.2{/for}
{for fxos1.3}fxos1.3{/for}

<hr>

{for m}m{/for}
{for m23}m23{/for}
{for m24}m24{/for}
{for m25}m25{/for}
{for m26}m26{/for}

{for not m}not m{/for}
{for not m23}not m23{/for}
{for not m24}not m24{/for}
{for not m25}not m25{/for}
{for not m26}not m26{/for}

<hr><hr>

= tests

for =fx17:
{for =fx17}null{/for}
{for =fx17,win}win{/for}
{for =fx17,winxp}winxp{/for}
{for =fx17,win7}win7{/for}
{for =fx17,win8}win8{/for}
{for =fx17,mac}mac{/for}
{for =fx17,linux}linux{/for}

for =fx23:
{for =fx23}null{/for}
{for =fx23,win}win{/for}
{for =fx23,winxp}winxp{/for}
{for =fx23,win7}win7{/for}
{for =fx23,win8}win8{/for}
{for =fx23,mac}mac{/for}
{for =fx23,linux}linux{/for}

for =fx24:
{for =fx24}null{/for}
{for =fx24,win}win{/for}
{for =fx24,winxp}winxp{/for}
{for =fx24,win7}win7{/for}
{for =fx24,win8}win8{/for}
{for =fx24,mac}mac{/for}
{for =fx24,linux}linux{/for}

for =fx25:
{for =fx25}null{/for}
{for =fx25,win}win{/for}
{for =fx25,winxp}winxp{/for}
{for =fx25,win7}win7{/for}
{for =fx25,win8}win8{/for}
{for =fx25,mac}mac{/for}
{for =fx25,linux}linux{/for}

for =fx26:
{for =fx26}null{/for}
{for =fx26,win}win{/for}
{for =fx26,winxp}winxp{/for}
{for =fx26,win7}win7{/for}
{for =fx26,win8}win8{/for}
{for =fx26,mac}mac{/for}
{for =fx26,linux}linux{/for}

<hr>

for not =fx17:
{for not =fx17}null{/for}
{for not =fx17,win}win{/for}
{for not =fx17,winxp}winxp{/for}
{for not =fx17,win7}win7{/for}
{for not =fx17,win8}win8{/for}
{for not =fx17,mac}mac{/for}
{for not =fx17,linux}linux{/for}

for not =fx23:
{for not =fx23}null{/for}
{for not =fx23,win}win{/for}
{for not =fx23,winxp}winxp{/for}
{for not =fx23,win7}win7{/for}
{for not =fx23,win8}win8{/for}
{for not =fx23,mac}mac{/for}
{for not =fx23,linux}linux{/for}

for not =fx24:
{for not =fx24}null{/for}
{for not =fx24,win}win{/for}
{for not =fx24,winxp}winxp{/for}
{for not =fx24,win7}win7{/for}
{for not =fx24,win8}win8{/for}
{for not =fx24,mac}mac{/for}
{for not =fx24,linux}linux{/for}

for not =fx25:
{for not =fx25}null{/for}
{for not =fx25,win}win{/for}
{for not =fx25,winxp}winxp{/for}
{for not =fx25,win7}win7{/for}
{for not =fx25,win8}win8{/for}
{for not =fx25,mac}mac{/for}
{for not =fx25,linux}linux{/for}

for not =fx26:
{for not =fx26}null{/for}
{for not =fx26,win}win{/for}
{for not =fx26,winxp}winxp{/for}
{for not =fx26,win7}win7{/for}
{for not =fx26,win8}win8{/for}
{for not =fx26,mac}mac{/for}
{for not =fx26,linux}linux{/for}

<hr>

{for =fx24,=fx26}=fx24,=fx26{/for}
{for mac,win}mac,win{/for}
{for =fx24,=fx26,mac,win}=fx24,=fx26,mac,win{/for}

<hr>

{for =fxos1.0}=fxos1.0{/for}
{for =fxos1.1}=fxos1.1{/for}
{for =fxos1.2}=fxos1.2{/for}
{for =fxos1.3}=fxos1.3{/for}

<hr>

{for =m23}=m23{/for}
{for =m24}=m24{/for}
{for =m25}=m25{/for}
{for =m26}=m26{/for}

{for not =m23}not =m23{/for}
{for not =m24}not =m24{/for}
{for not =m25}not =m25{/for}
{for not =m26}not =m26{/for}