Hello! Your finction "Mark All - Shift + Ctrl + M" have some mistaken behaviour:
``` // code example /* Initialize index array. */ for (int i = 0; i < IndexSize; i++) for (int j = 0; j < IndexSize; j++) for (int k = 0; k < OriSize; k++) index[i][j][k] = 0.0;
```
when I select "i" in 'for (int i' (yes, I want to see where 'i' used in the loop), and press Shift + Ctrl + M not only 'i' will be highlighted. This functionality will highlight ALL 'i' occurences in document including occurences inside words. I mean words Initialize, int, Size, index will be highlighting too, but I've selected only 'i', just a variable name consisting of one letter, so I expect highlight only single 'i', not 'i' inside words. Just try and you will understand what I mean, I guess. Look at pictures in attach.
Incorrect highlight: 
Correct highlight: 
So, I've found how to fix this issue: geany-master\src\keybindings.c : line 1570
just replace this
``` if (sci_has_selection(sci)) search_mark_all(doc, text, GEANY_FIND_MATCHCASE); else search_mark_all(doc, text, GEANY_FIND_MATCHCASE | GEANY_FIND_WHOLEWORD);
``` to this
``` /* if (sci_has_selection(sci)) search_mark_all(doc, text, GEANY_FIND_MATCHCASE); else */ search_mark_all(doc, text, GEANY_FIND_MATCHCASE | GEANY_FIND_WHOLEWORD);
```
key flag GEANY_FIND_WHOLEWORD will highlight only selected occurences and do not highlight it inside words. I've compiled this variant, it is work!
Request: please, add optional button "Mark All - Shift + Ctrl + M" to Toolbar, and make it is can be added to Toolbar by "Preferences -> Interface -> Toolbar -> Customise Toolbar". As for me it is very usefull feature, many other texteditors have no such feature, Geany has - and it is cool!
P.S. Sorrrrry for my english. And if you will need more details - you can write to i_am_mole@mail.ru, I will clarify, honestly.