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breakpoint -- set a breakpoint to stop execution at a particular point in the code and enter the debugger

Description

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"
 
i2 : code h

o2 = /home/m2user/rpmbuild/BUILD/Macaulay2-1.26.06-build/Macaulay2-1.26.06/
     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;
     )
 
i3 : h 1 
/usr/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:30:22:(3): entering debugger (enter 'help' to see commands)
/home/m2user/rpmbuild/BUILD/Macaulay2-1.26.06-build/Macaulay2-1.26.06/M2/
Macaulay2/packages/Macaulay2Doc/demos/demo2.m2:30:16-30:24: --source code:
     breakpoint y := t+1;
 
ii4 : step 
/usr/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:30:22:(3):[2]: unhandled step command
/usr/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:31:11:(3):[2]: --stepping limit reached
/usr/share/Macaulay2/Macaulay2Doc/demos/demo2.m2:31:11:(3): entering debugger (enter 'help' to see commands)
/home/m2user/rpmbuild/BUILD/Macaulay2-1.26.06-build/Macaulay2-1.26.06/M2/
Macaulay2/packages/Macaulay2Doc/demos/demo2.m2:31:5-31:13: --source code:
     z := 1/t;
 
ii5 : finish 
stdio:3:1:(3):[1]: --done stepping, returning to top level

See also

For the programmer

The object breakpoint is a keyword.

The source of this document is in Macaulay2Doc/ov_debugging.m2:626:0.