In だったっけ, why is the second "っ"(tsu) used when it can't be connected to "け"(ke)?


From what I understand, っ is used to "double" the "t" sound, so in だった it
makes sense because it's pronounced "datta", but why is it used in the second
part of the phrase?

Full sentence: "今日一限から英語だったっけ"




Despite how it looks, っ doesn't only double the consonant "t" but is an all-
around geminator used with most of Japanese consonants. See [the Wikipedia
article](https://en.wikipedia.org/wiki/Sokuon).

And for the last part 「っけ」, [this
page](http://www.jgram.org/pages/viewOne.php?tagE=kke) will be helpful.

* * *

ProTip™: Although Wikipedia says you can't use っ with some consonants, the
younger generation seems have acquired many untraditional geminations that
virtually you'd expect _any_ consonant after っ (especially in comics). The
most extreme usage is geminating any (two-syllable stem) adjective's second
syllable, when one gasps at the sight: つらい → つっら！, やばい → やっば！, こわい → こっわ！, はやい
→ はっや！ (even あまい → あっま！ [[ɐ | ʔ͡m | mɐ]], preferred to △ あんま！ [[ɐ | ɐ̃m |
mɐ]])




Despite how it looks, っ doesn't only double the consonant "t" but is an all-
around geminator used with most of Japanese consonants. See [the Wikipedia
article](https://en.wikipedia.org/wiki/Sokuon).

And for the last part 「っけ」, [this
page](http://www.jgram.org/pages/viewOne.php?tagE=kke) will be helpful.

* * *

ProTip™: Although Wikipedia says you can't use っ with some consonants, the
younger generation seems have acquired many untraditional geminations that
virtually you'd expect _any_ consonant after っ (especially in comics). The
most extreme usage is geminating any (two-syllable stem) adjective's second
syllable, when one gasps at the sight: つらい → つっら！, やばい → やっば！, こわい → こっわ！, はやい
→ はっや！ (even あまい → あっま！ [[ɐ | ʔ͡m | mɐ]], preferred to △ あんま！ [[ɐ | ɐ̃m |
mɐ]])

