Setting a breakpoint is a way to stop execution at a particular point in the code and enter the debugger. Then, commands like step continue finish and so on as in the following demonstration.
i1 : load "Macaulay2Doc/demos/demo2.m2"
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i2 : code h
o2 = /home/m2user/work/passagemath/passagemath/local/var/tmp/sage/build/
macaulay2-1.26.06/src/M2/Macaulay2/packages/Macaulay2Doc/demos/demo2.m2:
28:4-33:1: --source code:
h = t -> (
x := 1;
breakpoint y := t+1;
z := 1/t;
w := x+t;
)
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i3 : h 1
${prefix}/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:30:22:(3): entering debugger (enter 'help' to see commands)
/home/m2user/work/passagemath/passagemath/local/var/tmp/sage/build/macaulay2-
1.26.06/src/M2/Macaulay2/packages/Macaulay2Doc/demos/demo2.m2:30:16-30:24:
--source code:
breakpoint y := t+1;
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ii4 : step
${prefix}/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:30:22:(3):[2]: unhandled step command
${prefix}/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:31:11:(3):[2]: --stepping limit reached
${prefix}/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:31:11:(3): entering debugger (enter 'help' to see commands)
/home/m2user/work/passagemath/passagemath/local/var/tmp/sage/build/macaulay2-
1.26.06/src/M2/Macaulay2/packages/Macaulay2Doc/demos/demo2.m2:31:5-31:13:
--source code:
z := 1/t;
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ii5 : finish
stdio:3:1:(3):[1]: --done stepping, returning to top level
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