I’ve got a solution which needs the installation of the excellent BetterMultiSelection plugin, from @dail ! So :

• Open the menu option Plugins > Plugins Admin...

• Select the BetterMultiSelection plugin

• Click on the Install button

• Click on the Close button

• For security, close and restart Notepad++

Now, assuming that you have this INPUT text :

    Hyping "Hyping"
    Fulfillingcontract "Fulfilling contract"
    Time-limit "Time-limit"
    Requiredquality "Required quality"
    Upfront "Upfront"
    Whendone "When done"
    Penalty "Penalty"
    Costperbug "Cost per bug"
    Bugpenalty "Bug penalty"
    Latepenalty "Late penalty"
    Qualitypenalty "Quality penalty"
    Cancelpenalty "Cancel penalty"
    Netprofit "Net profit"
    Delivered "Delivered"
    Maxbandwidth "Max bandwidth"
    Lookagain "Look again"
    LookAgainPrompt "Are you sure you want to look again? It will cost {0}"

    Hyping "Popularité"
    Fulfillingcontract "Contrat rempli"
    Time-limit "Limite de temps"
    Requiredquality "Qualité requise"
    Upfront "Avance"
    Whendone "A la livraison"
    Penalty "Penalté"
    Costperbug "Coût par bug"
    Bugpenalty "Pénalité des bugs"
    Latepenalty "Pénalité de retard"
    Qualitypenalty "Pénalité de Qualité"
    Cancelpenalty "Pénalité d'annulation"
    Netprofit "Profit net"
    Delivered "Livré"
    Maxbandwidth "Bande passante Max"
    Lookagain "Actualiser"
    LookAgainPrompt "Êtes-vous sûr de vouloir actualiser ? Cela vous coûtera {0}"

• First, let’s change any tab char by the corresponding space chars with the menu option Edit > Blank Operations > TAB to Space

• Select all the lines, English and French

• Open the Replace dialog ( Ctrl + H )

  • SEARCH (?-s)^(\h*).+?"

  • REPLACE \1"

  • Tick the Wrap around and In selection options

  • Select the Regular expression search mode

  • Click on the Replace All button

You should obtain the OUTPUT text below :

    "Hyping"
    "Fulfilling contract"
    "Time-limit"
    "Required quality"
    "Upfront"
    "When done"
    "Penalty"
    "Cost per bug"
    "Bug penalty"
    "Late penalty"
    "Quality penalty"
    "Cancel penalty"
    "Net profit"
    "Delivered"
    "Max bandwidth"
    "Look again"
    "Are you sure you want to look again? It will cost {0}"

    "Popularité"
    "Contrat rempli"
    "Limite de temps"
    "Qualité requise"
    "Avance"
    "A la livraison"
    "Penalté"
    "Coût par bug"
    "Pénalité des bugs"
    "Pénalité de retard"
    "Pénalité de Qualité"
    "Pénalité d'annulation"
    "Profit net"
    "Livré"
    "Bande passante Max"
    "Actualiser"
    "Êtes-vous sûr de vouloir actualiser ? Cela vous coûtera {0}"

• Enable, if necessary, the BetterMultiSelection plugin

• Do a zero-length rectangular selection of all the lines ( Hit, simultaneously the Alt and Shift keys and press the Down key, several times )

• Release all the keys, then hit the End ( or Fin ) key

=> All the cursors should be at the end of lines

• Hit the Enter key to insert blank lines, in between

• Hit the Backspace key to delete the tabulations ( IMPORTANT )

• Hit the Esc key to disable your rectangular selection

You’ll get this OUTPUT :

    "Hyping"

    "Fulfilling contract"

    "Time-limit"

    "Required quality"

    "Upfront"

    "When done"

    "Penalty"

    "Cost per bug"

    "Bug penalty"

    "Late penalty"

    "Quality penalty"

    "Cancel penalty"

    "Net profit"

    "Delivered"

    "Max bandwidth"

    "Look again"

    "Are you sure you want to look again? It will cost {0}"


    "Popularité"

    "Contrat rempli"

    "Limite de temps"

    "Qualité requise"

    "Avance"

    "A la livraison"

    "Penalté"

    "Coût par bug"

    "Pénalité des bugs"

    "Pénalité de retard"

    "Pénalité de Qualité"

    "Pénalité d'annulation"

    "Profit net"

    "Livré"

    "Bande passante Max"

    "Actualiser"

    "Êtes-vous sûr de vouloir actualiser ? Cela vous coûtera {0}"

• Now, redo a zero lengh rectangular selection of the french lines only, including the blank ones

• While keeping pressed the Alt and Shift keys, hit the End ( or Fin ) key to include all text

• Press the Ctrl + X shortcut, to move that text in the clipboard

• Hit the Esc key to disable the rectangular selection

• Now, move the caret at the very beginning of the first blank line, under the line "Hyping"

• Hit the Ctrl + V shortcut

=> Wow ! you should get this OUTPUT text, below :

    "Hyping"
    "Popularité"
    "Fulfilling contract"
    "Contrat rempli"
    "Time-limit"
    "Limite de temps"
    "Required quality"
    "Qualité requise"
    "Upfront"
    "Avance"
    "When done"
    "A la livraison"
    "Penalty"
    "Penalté"
    "Cost per bug"
    "Coût par bug"
    "Bug penalty"
    "Pénalité des bugs"
    "Late penalty"
    "Pénalité de retard"
    "Quality penalty"
    "Pénalité de Qualité"
    "Cancel penalty"
    "Pénalité d'annulation"
    "Net profit"
    "Profit net"
    "Delivered"
    "Livré"
    "Max bandwidth"
    "Bande passante Max"
    "Look again"
    "Actualiser"
    "Are you sure you want to look again? It will cost {0}"
    "Êtes-vous sûr de vouloir actualiser ? Cela vous coûtera {0}"

Finally, do the last regex S/R, below :

• SEARCH (?-s)^(\h*)"(.+)"\R\h*(.+)

• REPLACE \1\2\x20\3

This regex selects two lines and rewrites all chars of the first line, but the double quote chars. Then, changes the EOL, between the two lines, with a space char and, finally, rewrites the contents of the second line

So, you should get your expected OUTPUT text :

    Hyping "Popularité"
    Fulfilling contract "Contrat rempli"
    Time-limit "Limite de temps"
    Required quality "Qualité requise"
    Upfront "Avance"
    When done "A la livraison"
    Penalty "Penalté"
    Cost per bug "Coût par bug"
    Bug penalty "Pénalité des bugs"
    Late penalty "Pénalité de retard"
    Quality penalty "Pénalité de Qualité"
    Cancel penalty "Pénalité d'annulation"
    Net profit "Profit net"
    Delivered "Livré"
    Max bandwidth "Bande passante Max"
    Look again "Actualiser"
    Are you sure you want to look again? It will cost {0} "Êtes-vous sûr de vouloir actualiser ? Cela vous coûtera {0}"

Best Regards,

guy038

Natively in Notepad++? The only way is manual search/replace for each term (or craft a regex that essentially does the same).

If you are willing to use the PythonScript plugin, then this post has an example of a script that will translate from English to another language; just put your English terms/phrases on the left side of the translation table, and the French equivalents on the right side.

"Popularité"
"Contrat rempli"
"Limite de temps"
"Qualité requise"
"Avance"
"A la livraison"
"Penalté"
"Coût par bug"
"Pénalité des bugs"
"Pénalité de retard"
"Pénalité de Qualité"
"Pénalité d'annulation"
"Profit net"
"Livré"
"Bande passante Max"
"Actualiser"
"Êtes-vous sûr de vouloir actualiser ? Cela vous coûtera {0}"

and paste in a once after the english’s words like

    Hyping 
	Fulfillingcontract 
	Time-limit 
	Requiredquality 
	Upfront 
	Whendone
	Penalty
	Costperbug
	Bugpenalty
	Latepenalty
	Qualitypenalty
	Cancelpenalty
	Netprofit
	Delivered
	Maxbandwidth
	Lookagain
	LookAgainPrompt

to give

    Hyping "Popularité"
	Fulfillingcontract "Contrat rempli"
	Time-limit "Limite de temps"
	Requiredquality "Qualité requise"
	Upfront "Avance"
	Whendone "A la livraison"
	Penalty "Penalté"
	Costperbug "Coût par bug"
	Bugpenalty "Pénalité des bugs"
	Latepenalty "Pénalité de retard"
	Qualitypenalty "Pénalité de Qualité"
	Cancelpenalty "Pénalité d'annulation"
	Netprofit "Profit net"
	Delivered "Livré"
	Maxbandwidth "Bande passante Max"
	Lookagain "Actualiser"
	LookAgainPrompt "Êtes-vous sûr de vouloir actualiser ? Cela vous coûtera {0}"