AFAIK compound verbs (複合動詞) are formed by prefixing 連用形 (ren'youkei, or stem form) of one verb to another "full" verb, e.g.:
- 巡り合う＝巡る(めぐり）＋ 合う
- 生み出す＝生む（生み）＋ 出す
And so on...
引っ張る seems to not fit this pattern and feels like it was formed by combining
張る, and not
張る which would result in
Apparently there are compound verbs with
Even more interestingly, there is a verb that exists in both variations:
引っ越す, although I don't think I've ever seen the former outside of the dictionary.
引っ張る a compound verb? If not, is there a term for such verbs and are there others?