It seems to me that keymap.c need to change 'rescan' to 'csfuncalled' in 'static PF cCsc[] = { ... }'. The reason why I have an impression is that doesn't match between cscope.c, keymap.c and mg.1.
As you can see as below, cscope.c's comment contains 'C-c s l' keybind. $ cd /src/usr.bin/mg $ grep -A 3 -B 5 csfuncalled cscope.c /* * Find functions called by this function. Bound to C-c s l */ /* ARGSUSED */ int csfuncalled(int f, int n) { return (do_cscope(CSCALLEDFUNCS)); } $ But, keymap.c and mg.1 do not have 'C-c s l' keybind. $ grep -A 19 'static PF cCsc' keymap.c static PF cCsc[] = { cscallerfuncs, /* c */ csdefinition, /* d */ csegrep, /* e */ csfindfile, /* f */ rescan, /* g */ rescan, /* h */ csfindinc, /* i */ rescan, /* j */ rescan, /* k */ rescan, /* l */ rescan, /* m */ csnextmatch, /* n */ rescan, /* o */ csprevmatch, /* p */ rescan, /* q */ rescan, /* r */ cssymbol, /* s */ csfindtext /* t */ }; $ man mg (snip) DEFAULT KEY BINDINGS Normal editing commands are very similar to GNU Emacs. In the following examples, C-x means Control-x, and M-x means Meta-x, where the Meta key may be either a special key on the keyboard or the ALT key; otherwise ESC followed by the key X works as well. C-SPC set-mark-command C-a beginning-of-line C-b backward-char C-c s c cscope-find-functions-calling-this-function C-c s d cscope-find-global-definition C-c s e cscope-find-egrep-pattern C-c s f cscope-find-this-file C-c s i cscope-find-files-including-file C-c s n cscope-next-symbol C-c s p cscope-prev-symbol C-c s s cscope-find-this-symbol C-c s t cscope-find-this-text-string C-d delete-char (snip) $ OK? Best regards, Hajime Edakawa Index: keymap.c =================================================================== RCS file: /cvs/src/usr.bin/mg/keymap.c,v retrieving revision 1.58 diff -u -p -r1.58 keymap.c --- keymap.c 29 Dec 2015 19:44:32 -0000 1.58 +++ keymap.c 7 Jun 2018 11:31:21 -0000 @@ -55,7 +55,7 @@ static PF cCsc[] = { csfindinc, /* i */ rescan, /* j */ rescan, /* k */ - rescan, /* l */ + csfuncalled, /* l */ rescan, /* m */ csnextmatch, /* n */ rescan, /* o */ Index: mg.1 =================================================================== RCS file: /cvs/src/usr.bin/mg/mg.1,v retrieving revision 1.106 diff -u -p -r1.106 mg.1 --- mg.1 11 Dec 2017 07:27:07 -0000 1.106 +++ mg.1 7 Jun 2018 11:31:06 -0000 @@ -134,6 +134,8 @@ cscope-find-egrep-pattern cscope-find-this-file .It C-c s i cscope-find-files-including-file +.It C-c s l +cscope-find-called-functions .It C-c s n cscope-next-symbol .It C-c s p