How can you force your character to say stuff in Left 4 Dead 2 (post 2015 patch)?

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Even though Valve "removed" the ability to force characters to say different phrases (according to this post), I continue to find players in games that are still able to do this!
I know it can get annoying if spammed, but used in moderation I think it's quite funny and can add to the multiplayer experience.
How can you make your character say things (outside of the limited phrases in the selection wheel) in Left 4 Dead 2 (post the 2015 patch which supposedly removed this ability).
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What is the push to talk button in Left for Dead 2?
There is built-in voice chat support in Left4Dead 2. For PC, the default key is C . For XBox-360, just plug your mic in or turn on the wireless mic. You can also set it to open mic, so you don't have to press C to talk.How do you text in Left 4 Dead 2?
How do I send a message in game? "u" will do team chat, if you don't want to send the message to the opposing team.What does realism do in Left 4 Dead 2?
Realism can be played on any difficulty setting. This mode removes the Survivor auras usually shown around players through walls. Also, halos for items or weapons only appear if you are close enough to do their action (such as grabbing a weapon or pressing a switch).Does Left 4 Dead 2 have Left 4 Dead 1?
yes all of the campaigns from Left 4 dead 1 have been ported into Left 4 dead 2 with the original characters and everything.[Let's Play] Left 4 Dead 2 Vox Complete Vocalizer
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