West Punjab
At Independence there was a Muslim majority in West Punjab with significant Hindu and Sikh minority. Nearly all of these minorities left West Punjab for India, to be replaced by large numbers of Muslims fleeing from the opposite direction. The official language of West Punjab was Urdu but most of the population spoke Punjabi using the Shahmukhi script. The linguist George Abraham Grierson in his multi volume Linguistic Survey of India (1904–1928) considered the various dialects up to then called "Western Punjabi", spoken in North, West, and South of Lahore in what is now Pakistani Punjab, as constituting instead a distinct language from Punjabi. (The local dialect of Lahore is the Majhi dialect of Punjabi, which has long been the basis of standard literary Punjabi.) Grierson proposed to name this putative language "Lahnda", and he dubbed as "Southern Lahnda" the coherent dialect cluster now known as Saraiki spoken in Multan Dera Ghazi Khan and Bahawalpur division and "North Lahnda" now known as Potwari spoken in Rawalpindi division and "Western Lahnda" now known as Hindko spoken in the regions bordering Khyber-Pakhtunkhwa.
Punjabi nationalism
In Pakistani Punjab province, Punjabi Language Movement is a linguistic movement in aimed at reviving the Punjabi language, art, culture and literature in Pakistan. There are several attempts going on by Punjabi society for implementation of Punjabi language as it is completely ignored by authorities in Punjab province. Urdu is preferred medium of education in local schools-colleges as well as Government paperwork which is very threatening for survival of Punjabi language in Punjab, Pakistan. But Urdu is the mother tongue of only about 7.57% Pakistanis. In September 2015, a case was filed in Supreme Court of Pakistan against Government of Punjab, Pakistan as it did not take any step to implement Punjabi language in the province. Punjabi lovers also say that creation of Bangladesh out of Pakistan proves that love of "Mother-tongue" is more important than religion. Pakistani Punjabi language film industry is in crisis as filmmakers were not producing Punjabi language films like before 1975 Punjabi films ruled in film industry of Pakistan. Television Channels from Lahore (Punjab's capital city) are all in Urdu instead of Punjabi. There is still 150-year-old unofficial ban on education in Punjabi language in Punjab, Pakistan and Government is ignorant about it thus compelling Punjabi people to protest. In August 2015, Pakistan Academy of Letters, International Writer’s Council (IWC) and World Punjabi Congress (WPC) organised "Khawaja Farid conference" and demanded Punjabi University should be established in Lahore and Punjabi language should be declared as the medium of instruction at the primary level. In Lahore, every year thousands of punjabis gather on International Mother Language Day seeking an end to the 150-year-old ban on education in Punjabi in Pakistan and against Urdu-isation of Punjab.