**What a crummy email interface GitHub has!!!!!!** I couldn't understand your questions but this (*&)(*&)(*& strips out images from email. I use images so we don't end up going down a terminology rabbit hole. Kind of like you asking for a "Geany filetype" without explaining what you mean. I've been in IT over 30 years writing software on many platforms and given the pictures I provided I had no clue what you were asking. Now I realize you never saw the pictures. GitHub really is barbaric.
I'm dealing with relative in hospital. Can check email, but cannot always get to GitHub and even if I could would need screen shots from this machine in office.
So, from the beginning: System
![f77-bug-001](https://user-images.githubusercontent.com/1883220/223739389-eeafc24e-cc94-4b...)
Configured file types ![f77-bug-030](https://user-images.githubusercontent.com/1883220/223740022-77398f02-cbbc-4f...)
That was only uncommented with .F77 added __after__ Geany failed to recognize .F77 as a Fortran 77 file extension.
.F90 file extension worked out of the box ![f77-bug-003](https://user-images.githubusercontent.com/1883220/223740561-f12f5cf2-f8dd-4c...) ![f77-bug-032](https://user-images.githubusercontent.com/1883220/223741006-9c50df92-8b84-43...)
.F77 file extension does not, even with the addition in ~/.config/geany/filetype_extensions.conf and a restart of Geany ![f77-bug-004](https://user-images.githubusercontent.com/1883220/223741416-c4c3bd22-305c-47...) ![f77-bug-010](https://user-images.githubusercontent.com/1883220/223741456-75e27167-3dca-42...)
If I save that exact file with a .f77 file extension Geany likes it. ![f77-bug-033](https://user-images.githubusercontent.com/1883220/223741983-f0368376-7390-49...) ![f77-bug-034](https://user-images.githubusercontent.com/1883220/223742015-203e402c-bcd6-42...)
Even if I change the system level file and restart Geany, it does not like files with .F77 extension. ![f77-bug-035](https://user-images.githubusercontent.com/1883220/223744938-a1d33f2f-d885-40...) ![f77-bug-036](https://user-images.githubusercontent.com/1883220/223744971-c6e3d20d-eb5c-47...)
When I went back in for grins and giggles to my local .conf and added *.F78; after the *.F77; then saved, Geany now started liking .F77 files. Didn't have to exit at all.
Here is a short .F77 file if you wish to test.
FTN_FILL_IN_LOGICALS.F77 ``` SUBROUTINE FTN_FILL_IN_LOGICALS IMPLICIT NONE C C Subroutine to fill in all of the logicals needed by the C Mega_Zillionare application when written in fortran C
INCLUDE 'SYS$LIBRARY:FORSYSDEF(LIB$ROUTINES)'
C;;;;; C Fill in default file names C;;;;; CHARACTER*12 DRAWING_DATA DATA DRAWING_DATA/'MY_MEGA_FILE'/
CHARACTER*13 DRAWING_STATS DATA DRAWING_STATS/'DRAWING_STATS'/
CHARACTER*10 MEGA_STATS DATA MEGA_STATS/'MEGA_STATS'/
CHARACTER*255 TRANSLATED_NAME_STR, WORK_STR CHARACTER*1 FIRST_CHAR INTEGER*4 L_X INTEGER*2 W_X LOGICAL IS_BLANK_LG
C;;;;; C Make certain the drawing_data logical exists C if not, give it a value in the local directory C;;;;; TRANSLATED_NAME_STR = ' ' L_X = LIB$GET_LOGICAL( DRAWING_DATA, TRANSLATED_NAME_STR, 1 W_X,,,,)
FIRST_CHAR = TRANSLATED_NAME_STR IS_BLANK_LG = FIRST_CHAR .EQ. ' '
IF (IS_BLANK_LG) THEN TRANSLATED_NAME_STR = DRAWING_DATA // '.IDX' L_X = LIB$SET_LOGICAL( DRAWING_DATA, 1 TRANSLATED_NAME_STR,,,) END IF
TRANSLATED_NAME_STR = ' ' L_X = LIB$GET_LOGICAL( DRAWING_STATS, TRANSLATED_NAME_STR, 1 W_X,,,,)
IF (TRANSLATED_NAME_STR(1:1) .EQ. ' ') THEN TRANSLATED_NAME_STR = DRAWING_STATS // '.IDX' L_X = LIB$SET_LOGICAL( DRAWING_STATS, 1 TRANSLATED_NAME_STR,,,) END IF
TRANSLATED_NAME_STR = ' ' L_X = LIB$GET_LOGICAL( MEGA_STATS, TRANSLATED_NAME_STR, 1 W_X,,,,)
FIRST_CHAR = TRANSLATED_NAME_STR
IF (FIRST_CHAR .EQ. ' ') THEN TRANSLATED_NAME_STR = MEGA_STATS // '.IDX' L_X = LIB$SET_LOGICAL( MEGA_STATS, 1 TRANSLATED_NAME_STR,,,) END IF
RETURN END
```
This acts like multiple things are going on.
1. Geany stores whatever syntax it was using and never checks again until a "new" .conf requires a reload. Stopping and starting Geany will not "fix" an existing opened file. 2. There is some kind of parsing error for the F77 geany type that doesn't like *.F77; if it is the last thing in the line. I mean I tried opening many different files after changing both local .conf and system without Geany recognizing .F77 as an F77 file. 3. Something else I haven't tracked down.
On the big systems *.F is common for Fortran IV or earlier (Yes, lots of that still in production.) *.FIV for shops that were straddling the change between Fortran IV and Fortran 77 *.F77 for Fortran 77. We always used upper case because that is all the early terminals had.
I hope this answers all of the questions.
As a workaround, if these file extensions could just be "functional" in the base package the other issues wouldn't surface.